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


Luxury is relative in hi-fi  -and not always related to cost. The design concept of the KD-A8 stresses convenience, versatility and extraordinary sound fidelity. As we hear it, our new top-of-the-line model has all these qualities, and more;
Metal Tape Compatible with SA Heads.
Computerized B.E.S.T. Tuning System for Bias/EQ/Sensitivity Tuning.
JVC S&L (Search and Lock) Automatic level Setting
Full Logic Two-Motor Transport
 JVC-Exclusive B.E.S.T. Tuning System ends tape guesswork.
This unique system uses a built-in computer to help you get a flat response (40 to 12,5 kHz ±1 dB) from any type or brand of tape. All automatically and all within half a minute. Ordinary EQ/Bias selectors can't begin to match it. The initials stand for Bias, Equalization and Sensitivity of Tape. All three factors are sampled and set for:
Detection of normal vs. chrome (and "chrome-equivalent") tapes.
Bias adjustment (for widest possible dynamic range)
High frequency equalization (for ideally flat range)
Tape sensitivity adjustment (within ±0,5 dB for proper operation of noise reduction systems)
Self-detection/self-correction for errors.
 Still more luxurious JVC features:
Fully compatible with the new metal Tape format.
Computer B.E.S.T. Tuning System for the automatic adjustment of Bias, Equalization and Sensitivity of tape.
Computer B.E.S.T.  Tuning System for the automatic adjustment of the recording when you are not a t home.
Search & Lock mechanism to Search for the maximum source signal level and lock the recording level to the optimum setting.
X-cut  Sen-Alloy record/play head for improved frequency response, minimizing the contuor effect.
2-Gap Sen-Alloy erase head for perfect compatibility with Metal tape.
2-Motors, Independent Drive mechanism makes the wow and flutter a low 0,035% (WRMS)
Full-logic control operation
Super ANRS  - Automatic Noise Reduction System by JVC
5-LED peak Indicator (MPI) - peaks instantly displayed in  -10, -5, 0 dB, +3 and +6 dB within one millisecond.
Bias and Equalizatiom selected with one 3 position tape select switch.
Indicators are grouped so as to be easy to chek.
Rec Mute switch, Memory Counter with memory Stop/Play, Timer Standby, Real-Time pause.
Two-Stepped Gear/Oil- Damped Cassette lid.
Automatic input selector (Mic - Line)
Remote Control terminal for optional remote control unit R-30E
 Set-up takes about 25 seconds on the average; the deck automatically records test signals, samples them, and tunes itself for the actual tape in use. The system, with its microcomputer brain, is available only from JVC.

JVC's S&L (Search and Lock) system automatically sets maximum recording level for carefree taping.
This super deck is Fully compatible for metal Tape playback and recording.
An amazingly low 0,035% wow & flutter (WRMS) results from JVC's unique Two-Motor ID system.
Fingertip action on full logic electronic tape transport mode-change buttons.

Specifications KD-A8

Type: Component Stereo Cassette Deck
Motors:  FG Type DC Servo Motor for Capstan; DC Motor for Reel
Heads:  2-SA (Sen-Alloy) heads
X-cut head for recording and playback
2-Gap head for erasing
Frequency Response
At -20 VU Recording:
Metal Tape :  15 - 18,000 Hz [25 - 17,000 Hz (±3 dB)]
SA/Chrome Tape :  15 - 18,000 Hz [25 - 17,000 (±3 dB)]
SF/Normal Tape :  15 - 17,000 Hz [25 - 16,000 Hz (±3 dB)]
At 0 VU Recording:
Metal Tape :  25 - 12,500 Hz (±3 dB)
SA/Chrome Tape :  25 - 8,000 Hz (±3 dB)
Frequency Response  (when using the computer B.E.S.T. TUNING SYSTEM)
AT -20 vu Recording:
Metal Tape :  40 - 12,500 Hz (±1 dB)
SA/Chrome Tape :  40 - 12,500 Hz (±1 dB)
SF/Normal Tape :  40 - 12,500 Hz (±1 dB)
Those values are almost the same for all types of tapes when the computer B.E.S.T. tuning system is used.
Signal-to-Noise Ratio:
ANRS - OFF :  60 dB (weighted, 1 kHz, 3% THD, Metal tape)
ANRS- ON :  Improved by 5 dB at 1 kHz and 10 dB at 5 kHz and over
Effects of Super ANRS (Normal Tape)
Improvement of S/N Ratio :  The same as with ANRS
Improvement of Frequency Response [0 VU / +5 VU Recording]:  6 dB at 10 kHz / 12 dB at 10 kHz
Improvement of Distortion [0 VU / +5 VU Recording]:  3% or less at 10 kHz / 3% or less at 10 kHz
Channel Separation:  35 dB (1 kHz)
Crosstalk:  65 dB (1 kHz)
Wow and Flutter:  0,035% (WRMS);  0,12% (DIN 45 500)
Harmonic Distortion:  K3 : 0,4%;  THD : 1,0% (Metal tape , 1 kHz)
Fast Forward Time:  85 sec. Or less (with C-60 cassette)
Rewind Time:  85 sec. Or less (with C-60 cassette)
Bias Frequency:  85 kHz
Input Jacks:
Microphone Jack x 2
Max Sensitivity/ Matching Impedance :  0,2 mV (-72 dBs)/600 Ω - 10 k Ω
Line In Jack x 2
Min. Input level/ Impedance :  78 mV (-20 dBs)/100 k Ω
Output jacks
Line Out Jack x 2
Output level/Impedance :  0 - 300 mV/3,7 k Ω
Phones Jack x 1
Output level/Impedance :  0 - 0,5 mW/8 Ω - 1 k Ω
Semiconductors:  91 Transistors;  4 FETs; 53 ICs; 23 LEDs; 97 Diodes (11 Zener Diodes); 1 Hall element
Power Requirement:  AC 100/120/220/240 V, 50/60 Hz
Power Consumption:  40 W
Dimensions (W x H x D):  450 x 124 x 390 mm (17-3/4 x 4-7/8 x 15-3/8 inches)

Weight:  11 kg (24,2 lbs)

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