What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Onkyo TA-200




Specifications
Type:  2-head, single compact cassette deck
Track System:  4-track, 2-channel stereo
Tape Speed:  4.8 cm/s
Heads:  1 x Record/Playback, 1 x Erase
Motor:  DC servo motor
Tape Type:  Normal, CrO2, Metal
Noise Reduction: HX-Pro, B, C
Frequency Response:  20 Hz to 17,000 Hz  (Metal tape)
Signal to Noise Ratio:  78 dB  (with Dolby C)
Wow and Flutter:  0.07%
Sensitivity:
Line Input:  60 mV
Line Output:  0.5 V
Power Requirements:  AC 220 V 50 Hz ; 22 W
Dimensions (W x H x D): 435 x 122 x 264 mm

Weight:  3.9kg

Advent 2

 Advent 2
If your budgett for stereo equipment is limited, and you would like the highest possible quality for what you spend, we believe a stereo system built around the Advent/2 loudspeaker may well be the best buy you can make.
We make that statment out of a conviction that the Advent/2 is a genuinely new kind of low-cost loudspeaker. Its sound quality is very close to that of the best speakers available at any price. It can fill a big living room with more than enough low-distortion sound to satisfy most people's greatest demands. And the bargain it represents is further increased by its efficiency, which is high enough to provide satisfying performance in average use with low-cost, low-power amplifiers and receivers.
The Advent/2 is the product of many years' experience in the design of speakers intended to offer better and better performance at lower and lower cost. Its overall design is based on evertything we have learned about talking the most simple and direct route to high performance, and we have put everything we can into it - including far more expensive basic loudspeaker components than ever before used in a system of its cost. Because it is intended to be first-quality in every sense, we have given as much attention to its appearance as to its performance, replacing the usual low-cost imitation wood cabinet with a distinctive  molded enclosure that we believe will look fresh and appealing for years to come.
The Advent/2 represents our best effort to provide absolutely eveything we believe important in a speaker for the lowest possible cost - and to bring genuine component stereo of very high quality to many people who otherwise might have to settle for something that only looks like the real thing.


Kenwood KR-9400


Kenwood KR-9400 AM/FM Stereo Receiver
Thr Kenwood KR-9400 stands as one of the truly great stereo receivers of the world, meeting the demands of th emost critical purist with the power, performance, and flexibility usually found only in the most expensive of separate components. The KR-9400 is the culmination of years of research and development on the part of Kenwood's engineering team, who have designed this very special unit with but one purpose in mind; to achieve the highest possible performance, regardless of cost.

A masterpiece of engineering with features never before incorporated in a stereo receiver.
Unique Kenwood Triple-Function Meter converts from Signal Strength Meter to Multipath detector to Deviation Meter at the touch of a button.
New Tape-Through Circuit permits tape-to-tape dubbing while you listen to another program source
New kenwood Injection Circuit mixes sound from any source into tape-to-tape dubbing
Triple Tone Controls provide full Bass, Treble, and Mid-range tonal compensation, with Defeat Switch for completely flat response.
Phase-Lock-Loop MPX Circuit; delivers exceptional FM-stereo separation for vivid directionality
Dolby FM Switch ; provides for the addition of a Dolby FM Adapter for best reception of Dolbyized FM broadcasts.

The Tuner Section
Famous the world over for the exceptional performance of its tuners, Kenwood outdoes its own reputation with the superb performance of the AM,FM and FM-stereo tuner section of the KR -9400
The FM Front End. To achieve the theoretical limit in FM sensitivity (1,7 µV), the KR-9400 incorporates an insulated dual-gate MOS-FET, combined with four separate tuned circuits. The extremely linear input of the r.f. stage is virtually impervious to cross-modulation and other forms of overload distortion.
The FM-IM Section. The high alternate channel selectivity (*) dB) and the remarkable capture ratio (1,3 dB) of the KR-9400 are the direct result of the permanently aligned solid state i.f. filter, a multi-function IC and five bi-polar transistors in the i.f. stage.
The Phase-Lock Loop Stereo Multiplex Decoder Section.
The kR-9400 provides extremely high FM-stereo separation throughtout the audio spectrum, thanks to the newly  developed phase-lock-loop IC circuit incorporated in the stereo FM decoder section, achieving more than 45 dB separation at 1 kHz; better than 35 dB at all frequencies from 30 Hz to 10 kHz.

The amplifier Section
The KR-9400 is the most powerful stereo receiver Kenwood has ever built, delivering a minimum of 120 watts of contiuous power per channel into 8 ohms speakers, both channels driven, 20 Hz to 20 kHz, with no  more thn 0,1% Total Harmonic Distortion
Direct-Coupled, Pure Complementary Symmetry Output Circuit
Kenwood;s advanced engineering eliminates the coupling capacitor between  output and speakers, so no distorting element stands  between you and the music. As a result you enjoy flat frequency response from ultra-lows to highest highs, a high damping factor (50 at 8 ohms), faithful bass response throughout the audio spectrum.
Large Power Transformer, Oversize Heat Sinks. A cool-running power transformer and massive heat sinks form the heart of a dual positive-negative power supply to the high-output transitors stages. This nocompromise design assures safe, cool operation even under continuous full-power output.
ASO protection Circuit. Kenwood 's "Area of Safe Operation" protection circuit will not interrupt your listening as long as the KR-9400 is operating within safe limits.shopuld those limits be exceeded, however, the sensitive electronic circuit with relay instantly disengages speakerrs.
Unique " Tape-Through" Circuit. The double tape monitoring facilities of the KR-9400 permit recording simultaneously onto two tape decks or dubbing from ona deck to the other. A unique "Tape-Through" cicruit carries recording convenience a step further by permitting the dubbing process to continue uninterrupted, even while the KR-9400 is being used to play another program source. Its's like owing two stereo systems in one.
The Preamplifier Section
The precision  equalizer-phono preamplifier section of the KR-9400 uses low-noise metal-encapsulated transistors to deliver an exceptionally high Signal-to-Noise ratio and assure utmost circuit reliability. Up to 300 mV (P-P) of input signal can be accomodated at less than 0,1% total harmonic distrotion, from a mere 2,5 mV phono input sensitivity.

Specifications
FM Tuner Section
Usable Sensitivity (IHF):  1,7 µV
Quieting Slope ( at 5 µV / 10 µV / 50 µV):  56 dB / 63 dB/ 72 dB
Signal-to-Noise Ratio:  72 dB
Capture Ratio (IHF):  1,3 dB
Selectivity Alt. Ch (IHF):  80 dB
Stereo Separation ( at 1 kHz / 10 kHz):  45 dB / 35 dB
Total Harmonic Distortion:
Mono :  0,3%
Stereo :  0,5%
Image Rejection Ratio:  80 dB
IF RejectionRatio:  100 dB
Harmonic Spurious Rejection:  90 dB
AM Suppression:  55 dB
Sub-Carrier Suppression:  62 dB
Antenna Impedance:  300 Ω balanced; 75 Ω unbalanced
AM Tuner Section
Uasble Sensitivity (IHF):  15 µV
Signal-to-Noise Ratio:   50 dB
Selectivity (IHF):  35 dB
Image Rejection Ratio:  70 dB
IF Rejection Ratio:  70 dB
Main Amplifier Section
Power Output: 120 watts per channel
Intermodulation Distortion:  0,1%
Preamplifier Section
Input Sensitivity/Impedance
Phono 1 and 2:  2,5 mV / 50 k Ω
Aux, Tape Play A, B:  150 mV/50 k Ω
MIC :  2,5 mV / 50 k Ω
Hum and Noise
Phono 1 and 2 :  70 dB
Aux and Tape :  93 dB
Mic :  65 dB
Output Voltage/Impedance
Tape Rec A, B
PIN :  150 mV/ 100 Ω
DIN :  30 mV/80 k Ω
Tone Controls
Bass :  ±10 dB at 100 Hz
Midrange :  ±10 dB at 800 Hz
Treble :  ±10 dB at 10 kHz
Loudness
At 100 Hz :  8 dB
At 10 kHz :  5 dB
Filters
High Filter:  12 dB/oct turnover 7 kHz
Low Filter:  12 dB/oct turnover 100 Hz
Power Requirements:  110/120 V 50/60 Hz
Power Consumption:  415 watts at full power; 60 watts at no signal
Dimensions (W x H x D):  21-15/16" x 6-9/16" x 15-9/16"
Weight:  45,4 lbs

Pioneer SA-5200


Pioneer SA-5200 - A compact, value-priced stereo integrated amplifier with advanced solid state circuitry and top versatility.

In the medium power and price range, few stereo amplifiers can match Pioneer's  SA-5200 for value and versatility. Designed for the person who is building his first set of home stereo components, this solid state amplifier offers the very latest circuit technology distinguished by superior stability and versatility. From the equalizer section to the power amplifier stages, the SA-5200 offers improved circuit design. The equalizer is unmatched in this price range for its precise RIAA equalization within +_0,5 dB as well as its ability for handling large inputs. In the power amplifier section, Pioneer has chosen complementary SEPP (Single-Ended, Push-Pull) ciruit with silicon transistors, offering ghigh efficiency and low distortion while delivering 13 watts + 13 watts of continuous power, both channel driven at 1 kHz into 8 ohms. The outstanding sound character of the SA-5200 makes it a value and a half, and the extent of this value is more than apparent when you price this amplifier. Another dynamic difference in true hi-fi components from Pioneer.

Circuit Description
Equalizer Amp
The signal from the Phono input terminal is fed to the input terminals of the equalizer amplifier stage, which employs a two-stage direct coupled circuit.
Since sufficient negative feedback from the second-stage collector is fed to the first-stage emitter, characteristics accurate to within ±0,5 dB on the RIAA curve can be provided. Compared with previous two-stage direct coupled circuits, this system makes for greater stability in the bass range and provides a surplus dynamic margin.
The amplified signal from the second-stage collector is fed to switch circuit-A ass'y through the Function Switch.

Control Amp
The signal selected by the Function switch is fed to the control amplifier through the Tape Monitor switch in switch circuit-A ass'y the loudness compensator circuit in switch circuit-B ass'y, and a potentiometer. The Tone Control circuit employs the nominal CR type configuration, and is connected after the one-stage amplifier. As in the bass and Theble tone controls, click-stop volume controls are employed, which provide high accuracy for flat frequency characteristics at the middle point of control knobs. The output of the control amplifier is fed directly to the power amplifier.

Power Amp
The power amplifier stage consists of seven transistors for each channel. It is composed of the thruout direct coupled  circuit with differential amplifier.
The signal from the control amplifier ass'y is fed to one base in the differential amplifier. The AC and DC negative feedabck from the output junction is fed to another base in the diffecrential amplifier so that overall stability is improved.
The differential amplifier output connects directly with the pre-driver base and amplifier. The signal from the pre-driver is amplifies by the driver and the power output stage, and fes to the speaker terminals through the Speaker switch in switch circuit-A ass'y.
Temperature compensation in the power amp ass'y is accomplished by a three-element varistor and the idle current adjustment by a semi-fixed variable resistor connected in series to the varistor.
Power transistor protection is accomplished by the fuse installed in series at the B-power circuit.

Power Supply
A full-wave rectifier circuits aupply all DC power. The rectified DC, with the ripple component eliminated by means of a 4,700 µF capacitor, is supplied for the output circuitry of the power amplifier circuit, and through CR filters for the other stages. The muting circuit eliminates the unpleasant noise usually heard when the power switch is turned On or Off. When the power switch is turned ON, the first-stage transitor Q1 in the power supply circuit is cut off immediately by the reverse bias caused  by a diode associated with the base.
When the power switch is turned OFF, the negative bias which has kept the first-stage transistor cut off is turned over to positive bias, and current entering the driver-stage transistor makes the second-stage transitor base connect to ground, the transitor cuts off the bias current entering the driver stage in the power amplifier ass'y. thus the amplifier stops working and unpleassant noise is eliminated.
A diode connected between the base and the emitter of the second-stage transistor permits discharge of the current charge in the power amplifier ass'y when the second-stage transistor is cut Off (when the power switch is turend Off).


 Specifications
Power Amplifier Section
Circuitry:  1st Stage Differential Amplifier, Dirct Coupled Quasi-complementary
 Continuous Power Output (both channel driven at 1 kHz):
15 W + 15 W at 4 Ω
13 W + 13 W at 8 Ω
Continuous Power Output (each channel driven at 1 kHz):
20 W / 20 W at 4 Ω
16 W / 16 W at 8 Ω
Power Output in 20-20,000 Hz (both channel driven):
10 W + 10 W at 8 Ω
Total Harmonic Distortion:
At continuous  Power  Output :  less than 0,8%
At 1 W + 1 W Power Output :  less than 0,2%
Intermodulation Distortion:
At Continuous  Power  Output :  less than 0,8%
At 1 W + 1 W Power Output :  less than 0,4%
Power Bandwidth (both channel driven IHF):  10 Hz - 40 kHz (THD 0,8%)
Output Speaker:  A, B, A+B (4 - 16 Ω)
Output Headphones:  4 - 16 Ω
Damping Factor:  more than 30 (1khz, 8 Ω)
 Preamplifier Section
Circuitry
Equalizer-amplifier:  2-stage Direct Coupled NFB type
Control-amplifier:  CR type
Frequency Response:
Phono (RIAA equalization):  30 Hz - 15 kHz ±0,5 dB
Tuner, Aux 1, 2; Tape Monitor :  15 Hz - 30 kHz ±1 dB
Hum and Noise (IHF, Shsort-circuited, A-Network):
Phono :  more than 70 dB
Tuner, Aux 1,2; Tape Monitor :  more than 90 dB
Input Sensitivity/Impedance:
Phono Mag :  2,5 mV/50 k Ω
Phono Overload Level :  100 mV/280 mV (rms/p-p)
Tape Monitor:  150 mV / 100 k Ω
Tape Rec/Pb (DIN  connector):  150 mV/100 k Ω
Aux 1, 2  :  150 mV/100 k Ω
Tuner :  150 mV/100 k Ω
Output Level/Impedance:
Tape Rec :  150 mV
Tape Rec/Pb (DIN connector)  30 mV/80 k Ω
Bass Control:  +12 dB; -10 dB at 100 Hz
Treble Control:  +9,5 dB; -10,5 dB at 10 kHz
Loudness Contour (-40 dB position):  +10 dB at 100 Hz ; +6 dB at 10 kHz
Power Requirements;  AC 120 V 60 Hz or AC 110 V , 120 V, 130 V, 220 V and 240 V 50/60 Hz (switchable)
Power Consumption:  85 W max
AC Outlets:  1 Switched, 1 Unswitched
Semiconductors:  22 Transitors; 7 Diodes
Dimensions (W x H x D):  415 x 132 x 328 mm (16-5/16" x 5-3/16" x 12-15/16")
Weight:  7,2 kg (15 lb 13 oz)

Harman/Kardon Citation Eleven

 Harman/Kardon Citation Eleven
Professional Solid State Stereophonic Preamplifier/Audio Equalizer

When Harman/Kardon introduced the Citation  A preamplifier  several years ago, it represented  a major breakthrough in solid state design. Within a short period of time, it became the audiophile's standard of excellence. In fact, the "A" is still recognized today by many audio authorities as the finest stereo preamplifier ever designed.
With the introduction of the Citation Eleven, Harman/Kardon has once again innovated a major change in the design and function of high performance solid state stereo preamplifiers.
The Citation Eleven uses the potential of transistors more completely and creatively than any other preamplifier in existance. It is a computer-crafted instrument that easily meets or exceeds every performance parameter ever established for a preamplifier. The simple truth is that the Citation Eleven is the best stereo preamplifier ever made.
 Total Flexibility and Control Over Acoustics
An important new design concept has been incorporated into the Citation Eleven to make it the most versatile stereo preamplifier ever created for home use. H/K engineers have determined that standard tone controls, even professional switched types, limit flexibility for they do not permit precise adjustment of program material over the entire audio range.
The Citation Eleven employs a professional type audio equalizer which gives the user complete control over program material, room acoustic and deficiencies within the speakers. Operating at predetermined hinge points, the audio equalizer adds or deletes audio energy to any of five points within the audio spectrum to compensate for inaccuracies in program material or within the playback system. It is no longer required to match room acoustic to the speakers by re-positioning furniture or by adding draperies and rugs to the room. The Citation audio equalizer controls room acoustics by permitting the user to set the five controls to suit his own personal requirements. Hot spots, ear-piercing high, frequency response drop out, excessive bass and even mid-frequency harshness can now be cancelled out by adding or deleting audio energy at the specific points in the audio spectrum where these probllems occur.

Below: another version of H/K Citation Eleven
 Listening quality of the Citation Eleven is superb , and not easily described in terms of laboratory measurements. The preamplifier offers solidity combined with an openness that sets it apart from all others. The more you listen to the Eleven , the more you become aware of the great achievement it represents. Anyone who wants the very best and will not be satified with anything less than the finest, will be well-advised to see and hear the new Citation Eleven.
Specifications
Audio Output:  up to 6 volts RMS into 10 k ohms
Frequency Response:  below 5 Hz to beyond 125 kHz ±0,5 dB
Square Wave Rise Time:  less than 1 ms at 20,000 Hz
Square Wave Tilt:  less than 5% at 20 Hz
Total Harmonic Distortion:  less than 0,05% at 6 volts RMS from 10 to 30,000 Hz
Below residual level of most test instrumentation at 2 volts RMS and below
Intermodulation Distortion:  less than 0,05% at the equivalent 6 volts RMS output
Noise (Unweighted):
Low Level :  65 dB below 6 volts at 10 mV input reference
High Level:  80 dB below 6 volts  ( volume control wide open)
Residual:  900 dB below 6 volts
Sensitivity:
Low Level :  1,5 mV for 2 V output
High Level :  150 mV for 2 V output ( in all auxiliary positions except Aux 3, which is 300 mV for 2 V output)
High Cut Filter:  -8 dB at 10,000 Hz, 6 dB /octave slope
Subsonic Filter:  -12 dB at 15 Hz, 6 dB/octave slope
Input Impedance:
Phono :  47  k Ω
Aux :  20 k Ω
Output Impedance:
Source Impedance :  less than 500 Ω
Recommended Load :  10, 00 Ω or greater
Phono Overload:  Greater than 115 mV
Audio Equalizers:  Five sliding controls operaating at the following hinge points; 60, 320, 1k, 5 k, 12k Hz. Boost and cut ±12 dB, each position
Phono Equalization:  RIAA curve ±0,5 dB
A.C. Convenience Receptacles:  Three switched. One unswitched
On/Off Switch:  Pushbutton, heavy duty rating
Function Selector:  Mag. Phono 1, Mag. Phono 2, four high level positions
Mode Selector:  Stereo, Stereo Reverse, Mono, LeftChannel only, Right Channel only
Balance Control:  Zero to infinity type
Volume Control:  Close tracking dual potentiometers, frequency insenstive within range of frequency response specifications
Speaker Selector:  Permits choice of speaker system 1, system 2 or both at once when preamplifier is connected in the manner described in the instruction manual
Headphone Receptacles:  Two low impedance headphone receptacles controlled by front panel speaker selector switch. May be switched in or out at user's discretion.
Output Receptacles:  Four main preamplifier outputs. Four outputs for tape recording
Inputs:
Two pair for low level phonograph
Four pair for high level equipment
Two pair for tape monitor
Two grounding termnals
Power Requirements:  117 volt, 50/60 Hz or 220 volt operation, AC line fuse
Dimensions (WxHxD):  16-1/16" x 4-3/4" x 12"
Weight:  20 pounds

TEAC C-2


Teac's Stereo Cassette Deck - Advanced Technology Delivers Professional Sound


The C-2 stereo cassette recorder has been precision-engineered to give you top-quality performance. Two motors and a solidly built transport give improved tape-to-head contact eliminating dropouts, plus an extremely low wow and flutter figure. A 3-head design produces superior frequency response, resulting in clear, beliavable sound reproduction. Switch-selectable bias and equalization allow optimum performance from any type of tape, and in addition allows you to take advantage of the new metal particle tape which provides greatly enhanced reproduction fidelity.

Features
True 3-Head System
3-Position Bias/EQ for All Popular Tapes
Two Motor/Feather Touch Micro-Switched Full Logic Controlled Transport
dbx II Interface ( Optional)
Differential Gear-Coupled Record Level Controls
Record Mute
Optional Plug-in Bias/EQ Modules to Optimize Performance
Remote Control Capability
Dual-Process Dolby Noise Reduction System
Peak Program Meter
Programmable Timer Function
Standard Rack Mount
Optional Accessories
RC-90 Remote Control
RX-8 dbx Unit
TO-8 test Tone oscillator to Set Bias precisely
CX-8B Adjustable Bias/EQ Card (Brown)

Specifications:
Track System:  4-Track, 2-Channel Stereo
Motors:
1 x FG Servo-Controlled DC Capstan Motor
1 x DC Reel Motor
Heads:  3 ( Erase, Record and Playback)
Type of Tape:  Compact Cassette C-60, C-90
Tape Speed:  1-7/8 ips
Wow and Flutter:  0,05% (NAB Weighted)
Frequency Response: 
Metal Particle Tape :  20 - 20,000 Hz
Co (CrO₂) Tape :  20 - 18,000 Hz
Low Noise Tape :  20 - 16,000 Hz
Signal-to-Noise Ratio:  58 dB (can be improved with Dolby NR) to 63 dB/ 1 kHz, 68 dB / over 5 kHz
Fast Forward/Rewind Time:  90 seconds for C-60
Inputs:
2 x Line :  60 mV/30 k Ω
2 x Mic :  0,25 mV (-72 dB)/200 Ω or more
Outputs:
2 x Line :  0,3 V/50 kohm or more
1 x Stereo Headphone Jack / 8 Ω
Power Requirements/Consumption:  117 V AC, 60 Hz / 33 W
Dimensions (W x H x D):  482 x 147 x 345 mm 919" x 5-3/4" x 13-1/2")
Weight:  14 kg (31 lbs)

Audio Research D-110


The D-110 is a linear 2-channel power amplifier of extremely high quality construction designed for the reproduction of speech and music. It represents "second Generation" advancement of Audio Research's analog module technology.
With the D-350 and D-100A technology to draw from, the D-110 was conceived to embody those parts of each design that could be brought together to provide an amplifier having the very highest possible performance level within its power capability.

Assuming a basically linear and stable amplifier design with adequate "slewing rate" to allow possible audio waveforms to be reproduced with low distortion, there are still two most important factors that must be dealt with if it is to be capable of driving loudspeaker loads "fast and clean". One is the "stiffness" or "muscle" of the output-driver stage; the other, a stable high capacity power  supply, capable of providing the instentaneous current demands of the circuit. By utilizing the D-350 power supply, with its 300 joule energy storage, and the D-100A output stage rebiased to a much higher "idle" current (the 3 built-in, superquiet fans keep the ambient temperature to a very reasonable level), an amplifier has been created that provides a new level of music reproduction. To obtain the performance this amplifier is capable of, it is recommended that only commensurate quality preamplifier-control units (such as the SP-3B, SP-5, SP-6) be used with it. Also, only high quality turntables with stable arms and cartridges should be used.

Features:
All solid state featuring Audio Research's analog module technology and unique linear output circuitry.
Power-line monitor meter with operating ranges identified.
Output power monitor meters - peak "averaging" circuitry to monitor safe operating (sine wave power calibration 100 watts/8 ohms top of green arc).
Built-in speaker line fuse holders - user can assure absolute speaker protection.
Front panel power supply fuses for easy acces
Super-quiet built-in fans to assure reliable operation
Front and rear panels are 2-color anodized aluminum for permanent finish and lettering
Industrial grade components and construction for long service life. Rated for continuous commercial service.

Specifications
Power Output:  100 watts per channel minimum RMS (both channels operating) at 8 ohms from 1 Hz to 20 kHz with less than ,25% T.H.D.
Intermodulation Distortion:  less than 0,05% at rated output (80 Vp-p) and load (SMPTE method)
Total Harmonic Distortion and Intermodulation Distortion both decrease with decreasing output (typically less than 0,02% at 1 watt per channel RMS)
Power increases to maximum at 4 ohms
Input Sensitivty:  1,5 volts RMS for rated power and load
Input Impedance:  30 k Ω (nominal)
Damping Factor:  more than 200 at rated power and load (20 Hz to 20 kHz)
Noise:  wide band, unweighted, more than 100 dB below 100 watts at 8 Ω - power line components (hum) 90 dB below 100 watts at 8 Ω
Power Requirements:  105 - 125 / 210 - 240 V AC, 50/60 Hz
Power Consumption:  600 watts maximum
Dimensions (W x H x D):  480 x 265 x 436 mm (19" x 10-1/2' x 17-1/4")
Handles Extend:  41 mm (1-5/8 ") forward of the front panel
Weight:  42 kg (92 lbs) Net 

Denon GT-800

 Direct Drive Stereo Disc Player  Denon GT-300 Turntable Full Automatic

Specifications
Type:  Two speeds record player
Turntable Drive System:  Direct drive
Turntable Speed:  33-1/3 and 45 rpm
Motor:  Brushless DC servo motor
Turntable Platter:  Aluminum diecast alloy
Platter Diameter:  310 mm (12,2")
Wow and Flutter;  0,035% WRMS or less
Signal-to-Noise Ratio:  50 dB or more (DIN A curve)
Pick Up Arm:  Static balanced, S-shape type pipe arm with direct read out stylus pressure system
Effective Arm Length:  215 mm (8,464")
Usable Cartridge
Weight:  4,5 to 10,5 g
Subfunctions:  Oil damping pick up arm lifter; Large size shock insulator; Full auto mechanism
Power
Requirement:  110-120, 220 - 240 V;  50/60 Hz
Consumption:  5 W
Dimensions (W x H x D):  436 x 370 x 145 mm (17-3/16" x 14-9/16" x 6-23/32")
Weight:  6,1 kg (13,45 lbs)

McIntosh MA 9000


The MA9000 Integrated Amplifier can help you achieve audio perfection. Offering 300 Watts per channel, it is ur largest integrated.
Features our new McIntosh Monogrammed Heatsinks™ that are so efficient at dissipating heat that they warrant bearing the McIntosh “Mc” logo.
All digital inputs are housed in our new DA1 Digital Audio Module which can be easily replaced by future modules to keep your MA9000 up to date as new digital audio formats and technologies are developed.
Supports high resolution digital music up to DSD256 and DXD 384kHz via a Quad Balanced 8-channel, 32-bit/192kHz DAC.
All unbalanced analog connectors are made from premium gold-plated solid brass for superior signal handling and grounding.
The MA9000 is full of McIntosh technological staples including Autoformers, Power Guard®, Sentry Monitor™, Home Theater PassThru, High Drive headphone amplifier with Headphone Crossfeed Director (HXD®),
Power Control and Solid Cinch™ speaker binding posts.


Other McIntosh features included in the MA9000 are: 
   - Power Guard® that monitors and adjusts the sound wave at the speed of light to prevent harsh sounding distortion and clipping that could damage your speakers
  -  Sentry Monitor™ is our fuse-less short-circuit protection circuit that disengages the output stage before current exceeds safe operating levels and then resets automatically when operating conditions return to normal
  -  Home Theater PassThru that allows for seamless integration into a home theater system
 -   High Drive headphone amplifier with Headphone Crossfeed Director (HXD®) which can bring an added dimension to headphone listening
   - A discrete, eight-band tone control that allows for advanced manual analog adjustment of your favorite recordings
   - Power Control to send power on/off signals to connected McIntosh components for easy system power up and shutdown
   - Our patented Solid Cinch™ speaker binding posts that easily but securely attach the speaker cables to prevent them from coming loose and possibly causing a short; the binding posts are also gold-plated to prevent corrosion and ensure a quality signal is sent over your speaker cables to your speakers


The entire unit is wrapped in the classic McIntosh aesthetic with blue watt meters, a black glass front panel, control knobs, illuminated logo, aluminum end caps with built-in handles and a beautiful polished stainless steel chassis.


Specifications
Power Output per Channel: 300 Watts
Number of Channels:  2
Speaker Impedance:  2,  4, or 8 Ω
Rated Power Band:  20 Hz to 20 kHz
Total Harmonic Distortion:  0.005%
Dynamic Headroom:  1.8 dB
Frequency Response:   20 Hz to 20 kHz (+0, -0.5 dB)
Frequency Response:  10 Hz to 100 kHz (+0, -3dB)
Sensitivity Phono (Moving Coil):  0.30 mV
Sensitivity Phono (Moving Magnet):  3.0 mV
Sensitivity High Level [Balanced / Unbalanced]:  0.6 V/0.3 V
Sensitivity (Power Amp):  1.7 V
Signal To Noise Ratio (Moving Coil):  82 dB
Signal To Noise Ratio (Moving Magnet):  84 dB
Signal To Noise Ratio (High Level):  98 dB
Signal To Noise Ratio (Power Amp):  114 dB
Input Impedance [Balanced / Unbalanced]:  10 K/22 K
Damping Factor:  better than 40
Maximum Output [Balanced / Unbalanced]:  8 V Unbalanced; 16 V Balanced
Digital-to-Analog Converter (DAC) Type:  8-channel, 32-bit/192 kHz PCM/DSD, Quad Balanced
Digital Coaxial Input Sample Rate:  24-bit/44.1 kHz to 192 kHz
Digital Optical Input Sample Rate:  24-bit/44.1 kHz to 192 kHz
Digital MCT (DIN) Input Sample Rate:  16-bit/44.1 kHz (CD); DSD64 (SACD)
Digital USB Input Sample Rate:  32-bit/44.1 kHz to 384 kHz (PCM); DSD 64, DSD 128, DSD 256, DXD 352.8 kHz, DXD 384 kHz
Tone Controls:  8-Band
Tone Bypass and Input Assign:  Yes
RS232 Control Input: Yes
Power Control Output:  1 Main, 2 Trigger
Power Requirement:  120V, 50/60Hz, 6.6A
Standby Power Requirement:  less than 0.25 Watts
Dimensions (W x H x D):  17-1/2” x  9-7/16” x 22” (445 x 240 x 559 mm)  including knobs, connectors and cables
Weight:  101 lbs (45.8kg)
Shipping Weight:  134 lbs (60.8 kg)

Luxman T-117

Luxman T-117AM/FM Stereo Tuner
Luxman tuners offer Computer-Analyzed Tuning which continuously samples the incoming FM signal. The audio Output is automatically switched to "high-blend" when the level is too low for noise-free stereo. In this way, audio quality is improved for most receivable.
Utilizes twin FM detectors for unequaled performance. A calibration button improves the quality of recording from FM broadcasts.


Specifications:
FM Tuner
Intermediate Frequency:  10,7 MHz
Frequency Range: 
JA model only:  76,1 - 89,9 MHz
Other :  87,5 - 108 MHz
Usable Sensitivity (Mono 3% T.H.D.):  16 dBf (12 dBf JA, EK, UZ model)
Signal-to-Noise Ratio Stereo :  70 dB
Image Response Ratio:  70 dB
IF Response Ratio:  90 dB
Distortion (1 kHz, stereo):  0,2%
Stereo Separation (1 kHz):  40 dB
Frequency Response (30 Hz - 15 kHz):  ± 1,5 dB
Quieting Sensitivity (50 dB S/N, stereo):  45 dBf
Output level (Mono):  700 mV ±3 dB
AM (MW) Tuner
Intermediate Frequency:  450 kHz
Frequency Range: 
JA model only:  522 - 1611 kHz
Other :  530 - 1620 kHz
Usable Sensitivity (20 dB, S/N):  76,2 dBf
Signal-to-Noise Ratio:  42 dB
Image Response Ratio:  30 dB
IF Response Ratio:  40 dB
Distortion:  1%
Frequency Response (120 Hz - 2 kHz):  ± 3 dB
Output Level:  210 mV, ±3 dB
LW Tuner ( for SD model only)
Intermediate Frequency:  450 kHz
Frequency Range:  153 - 281 kHz
Usable Sensitivity (20 dB, S/N):  89,2 dBf
Signal-to-Noise Ratio:  42 dB
Image Response Ratio:  25 dB
IF Response Ratio:  27 dB
Distortion:  1%
Output Level:  210 mV, ±3 dB
TV Tuner ( JA model only)
Intermediate Frequency:  54,25 MHz
Channel Range:  1 - 62 ch
Usable Sensitivity (30 dB, S/N):  20 dBf, 2ch
Signal-to-Noise Ratio: 
2 Channel Mono :  48 dB
Stereo :  45 dB
Main :  48 dB
Sub :  48 dB
32 channel Mono :  40 dB
Stereo :  40 dB
Main :  40 dB
Sub :  40 dB
Channel Separation (1 kHz):
Stereo :  25 dB
Main-Sub :  40 dB
Sub-Main :  45 dB
Distortion ( 2 ch. 1 kHz Stero):  1,8%
Frequency Response (50 Hz - 10 kHz):  +1, -3 dB
Output Level:  700 mV, ±3 dB
General Section
Semiconductors:
JA Model :  24 IC's; 59 Transistors; 8 FET's; 73 Diodes; 10 Zener Diodes
SD Model :  21 IC's; 57 Transistors; 6 FET's; 62 Diodes; 10 Zener Diodes
EX Model :  21 IC's; 49 Transistors; 3 FET's; 59 Diodes; 10 Zener Diodes
UZ Model :  21 IC's; 50 Transistors; 6 FET's; 61 Diodes; 10 Zener Diodes
Power Supply:
JA Model Only :  100 V 50/60 Hz
SD, EX Model :  220 V 50 Hz
UZ Model Only :  120 V 60 Hz
Power Consumption:  15 W
Dimensions (W x H x D):  453 x 62 x 323 mm
Weight:  3,6 kg