1979 Panasonic SU-2800 Stereo Integrated Amplifier

£72.50

This amplifier is in good working condition. Cosmetically it has some marks from being stacked and some age related colouring.

Happily runs four 100W speakers and give a nice warm sound. It's only minor fault is a slight crackle when adjusting the volume but only when the dial is moved. So would benefit from a service.

Manufacturers description:

The Panasonic SU-2800 is a vintage, 4-channel silver-faced integrated stereo amplifier from the late 1970s, often paired with the ST-2800L tuner. It is known for its robust build, featuring six inputs (including phono for record players), tape monitoring, and tone controls for bass, treble, and balance.

Key Features and Details:

* Design: Features a silver brushed aluminum front panel and is noted for its "quite powerful" sound output.

* Connections: Includes 5-pin DIN tape connections, Phono input for turntables, and Tape/AUX inputs.

Specifications..

Power output: 30 watts per channel into 8Ω (stereo)

Frequency response: 15Hz to 100kHz

Total harmonic distortion: 0.9%

Damping factor: 20

Input sensitivity: 2mV (MM), 180mV (line)

Signal to noise ratio: 70dB (MM), 85dB (line)

Output: 30mV (DIN)

Speaker load impedance: 4Ω to 16Ω

Dimensions: 430 x 85 x 280mm

Weight: 3.5kg

Year: 1978

Intermodulation distortion..

rated power at 250 Hz: 8 kHz = 4:1, 4 Ω: 0.15%

rated power at 60 Hz: 7 kHz = 4:1, SMPTE, 8 Ω: 0.08%

Residual hum & noise: 0.6 mV

Damping factor: 15 (4 Ω), 30 (8 Ω)

Input sensitivity and impedance

PHONO: 2.5 mV/47 k Ω

TUNER, AUX: 150 mV/27 k Ω

TAPE 1, PLAYBACK: 180 mV/33 k Ω

PHONO maximum input voltage (1 kHz, RMS): 100 mV

S/N

rated power at 42 PHONO: 74 dB (IHF, A: 80 dB)

TUNER, AUX, TAPE: 83 dB (IHF, A: 97 dB)

-26 dB power at 4 Ω

PHONO: 62 dB

TUNER, AUX, TAPE: 62 dB

50 mW power at 45 PHONO: 62 dB

TUNER, AUX, TAPE: 62 dB

Frequency response

PHONO: RIAA standard curve

30 Hz ~ 15 kHz, ‡1.0 dB

TUNER, AUX, TAPE 20 Hz ~ 20 kHz, 0.8 dB

10 Hz ~ 50 kHz, - 1 dB

Tone controls..

BASS: 50 Hz, +10 dB ~ -10 dB

TREBLE: 20 kHz, +10 dB ~ - 10 dB

Loudness switch (volume at -30 dB): 50 Hz, +9 dB

Output voltage and impedance REC OUT

REC/PLAY: 150 mV

Channel balance (250 Hz ~ 6300 Hz), AUX: 30 mV/82 k

Channel separation at 1 kHz, AUX: 土1.0dB

Headphones output level and impedance: 330 mV/330

Load impedance: 4 ~ 16

MAIN or REMOTE MAIN + REMOTE: 8 ~ 16

Quantity