JA-S55

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.

JVC JA-S55

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:

    Hello,
    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?
    Thanks,
    Don

Leave a Reply

Your email address will not be published. Required fields are marked *