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REVOX B750

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Technic details

Specifications

Type:
Stereo Integrated Amplifier
Power Output:
60W into 4Ω
40W into 8Ω
Total Harmonic Distortion:
Less than 0.2 % at any level up to rated output
Frequency response:
20Hz to 20kHz, ±0.5dB
Damping factor:
Better than 75 at 8Ω

Inputs (Sensitivity for 60W, 4Ω / input im­pedance):
Tuner, AUX, Tape 1+2 - 200mV /100kΩ
Phono 1 - 1.5-7mV / 25kΩ, 50kΩ, 100kΩ (Selectable)
Phono 2 - 1.5-7mV
Nominal - 5mV / 50kΩ
PWR AMP IN - 1V / 10kΩ
Overload levels:
Tuner, AUX, Tape 1+2 - 9V
Phono 1, 2 - 400mV
Outputs level / impedance:
Tape 2 Out (DIN) - 6.5mV / 10kΩ
Speakers A, B - 15.5V / Min. 4kΩ
Tape 1, 2 (Phono sockets) - 200mV / Min. 50kΩ
Tape 2 (Jack) - 200mV / Min. 50kΩ
PRE AMP Out - 1V / Min. 10kΩ
Phones x 2 - 15.5V / 100Ω
Signal to noise ratio (With reference to 60W, 4Ω):
Tuner, AUX, Tape 1, 2 - Better than 90dB, (Unweighted input termination 10kΩ)
Phono 1, 2 - Better than 70dB, (Unweighted input termination 2.2kΩ)
Channel separation:
Better than 60dB (At 1000Hz)
Phono equalization:
20Hz to 20kHz, ±0.5dB (As per I EC 98 MOD 4 1976)
[Tone controls]
Bass: ±8dB in 2dB steps at 120Hz
Treble: ±8dB in 2dB steps at 8kHz
Presence: ±8dB in 2dB steps at 3kHz
[Filter]
Low: 50 Hz, -3dB (12 dB / octave)
High: 8 kHz, -3dB (12 dB / octave)
Loudness (Volume -30 dB):
+6dB (100Hz)
+4dB (10kHz)
Semiconductors:
4 x IC’s (Voltage regulation)
99 x Transistors
4 x Bridge rectifiers
48 x Diodes

Power supply:
AC 100 / 120 / 140 / 200 / 220 / 240V, 50 / 60 Hz
Power consumption:
50 to 350W
Dimensions (W x H x D):
452 x 151 x 348mm
Weight:
13kg
Year:
1978

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