Revox A50
Stereo Amplifier
The A50
amplifier is a unit of central importance within a hifi music system. Its power
handling capacity is a decisive factor for high quality sound reproduction from
tape, disc or off the air. For this reason, extremely careful attention has
been given to every design detail of the Revox A50 Stereo Power Amnplifier, whose sine wave rms
rating of 2x40 watts will satisfy the most discriminating demands. Silicon
transistors are used throughout its circuitry, which is made up of pluggable
PC-boards. From the softest sounds up to the rated output power, distortion
remains negligible. pre-set level controls eliminate any volume changes when
switching between different signal sources. A separate button provides for off
tape monbitoring through the power amplifier. Step-type bass and treble
controls permit exactly reproducible settings for each channel, as well as a
defined Linear response. headphone outputs and switchable filters round up the
many distinctive features of the outstanding revox A50 Stero Power Amplifier.
Specifications:
Continuous
Sine Wave Output: 2 x 40 W at 4-8 Ω ( 2 x 25 W at 16 Ω )
Music
Power: 2 x 70 W at 4-8 Ω (2 x 40 W at 16 Ω )
Distortion: less than 0,1% at 1 kHz (less than 0,3% from
40 Hz to 15 kHz)
Intermodulation: less than 0,3%
Frequency
Response: 20 Hz - 20 kHz ±1dB
Powertbandwidth: 10 Hz - 40 kHz
Inputs
Sensitivity/Impedance:
Micro : 3 mV/100 k Ω
Phono
Magnetic : 3 mV (2 - 7 mV) / 47 k Ω
Tape, Tuner
: 100 mV (better than 90 mV)/ 100 k Ω
Auxiliary
: 100 mV (better than 90 mV)/ 330 k Ω
Phono
Ceramic : 230 mV (better than 180 mV)/
800 k Ω
Tape Monitor
: 250 mV (better than 180 mV)/ 50 k Ω
Signal-to-Noise
Ratio (unweighted),
At nominal
sensitivity reffered to 40 W, 8 Ω load
Phono : better than 65 dB
Tape, Tuner,
Aux : better than 75 dB
Tape Monitor
: better than 80 dB
At nominal
sensitivity reffered to 50 mW, 8 ohm load
Phono : better than 50 dB
Tape, Tuner,
Aux : better than 50 dB
Tape Monitor
: better than 50 dB
Intrchannel
Crosstalk: better than 60 dB (1 kHz)
Damping
Factor: better than 20
Tone Control
(4 dB steps): ±12 dB at 60 Hz; ±12 dB at
12 kHz
Low Filter
: -8 dB at 60 Hz (12 dB/oct)
High Filter
: -15 dB at 12 kHz (12 dB/oct)
Loudness
Control: 60 Hz : -5 dB/1 kHz: -16 dB /
12 kHz : -12 dB
Phono
Equalization (RIAA): ±1 db / 50 Hz ...
15 kHz
Power
Supply: 110,130, 150, 220, 240, 250 V
50/60 Hz
Semiconductor
Component: 30 Silicon Transistors; 3 Silicon Rectifiers; 14 Diodes
Dimensions
(W x H x D): 415 x 160 x 245 mm
Weight: 8,2 kg (18 lbs)
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