When I bought this amp I really didn’t expect much, but after replacing the outputs, a few resistors, all the electrolytic capacitors, the lights and cleaning the controls, I was floored.  A  truly wonderful amp.


Integrated amplifier with a direct readout Twin Power Meters, Bass, Treble controls, available Tone, Subsonic Filter, Loudness. Input Channel Selector (AUX, Tuner, Phono 1, Phono 2). Possibility to chose connected speaker system: 1, 2, 1+2 or Off. Balance, Volume control, jack for headphones. JVC’s Triple Power Protection. Silver.

Output Power:

65 watts RMS per channel into 8 ohms (1kHz, 0.02% THD),

70 watts RMS per channel into 4 ohms (1kHz, 0.05% THD),

60 watts per channel, min. RMS, both channels driven, into 8 ohms, from 20Hz to 20,000Hz with no more than 0.02% total harmonic distortion

Total Harmonic Distortion (1 kHz): 0.005% at 60W Output 0.02% at 1W Output

Intermodulation Distortion: 0.01% at 60W Output

Damping Factor: 50 (20 — 20kHz, 8 ohms)

Load Impedance: 4—16 ohms (SYSTEM 1 or 2) 8—16 ohms (SYSTEM 1 + 2)

Input Sensitivity (Impedance):

Phono: 2.5mV (PHONO-1, 2) (47k ohms)

Tuner: 200mV (50k ohms)

AUX: 200mV (50k ohms)

Tape play: 200mV (50k ohms) (Tape-1, 2)

Phono Overload Capacity: 230mV (RMS)

RIAA Phono Equalization: ±0.3dB from RIAA Curve

Output Level:

Tape rec: 200mV

DIN REC: 30mV (80k ohms)

Signal-to-Noise Ratio (RMS)

Phono (IHF A Network): 81dB

Tuner, AUX, Tape Play (IHF A Network): 105dB

Frequency Response: 5Hz—100 kHz (+0, -1dB)

Tone Controls:

Bass: 100Hz ±8dB

Treble: 10 kHz ±8dB

Subsonic Filter: 6dB/oct. at 18Hz

Muting Level: -20dB

Loudness Control (-30dB Volume Control): +6dB at 100Hz, +4dB at 10 kHz

Dimensions (H x W x D, mm): 149 x 420 x 334

Weight: 10kg

One Response to JA-S55

  1. Don says:

    I have the same unit, wondering if you could give me the specs on the lamps you bought to replace the burned out ones. Also, was it hard to do?

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