Notable Productions

https://stereonomono.blogspot.com/

Revox B750 Amplifier

This compact full amplifier transfers even extreme Crescendi from breath to Furioso in impressive purity. In order to be able to build the compact amplifier Revox B750, only musical high points had to be analyzed and over nostalgic tubes strengthened. The quality of a Revox B750 amplifier can be based not simply on its wattage, but to it, how distortion-free it shows the music. In addition, it is nearly unbelievable, which an amplifier must carry out. It processes even high-complex signal forms both with smaller as well as with the largest volume in such a manner purely that remaining distortions can be only proven with most modern measuring methods.

Specifications:

Power Output: 60 watts into 4 ohms; 40 watts into 8 ohms

Total Harmonic Distortion: less than 0.2 % at any level up to rated output

Frequency response: 20 Hz - 20 kHz ±0.5 dB

Damping factor: better than 75 at 8 ohms

Inputs (sensitivity for 60 watts (4 ohms) / input im­pedance):

Tuner, Aux, Tape 1 +2: 200 mV/100 kohms

Phono 1: 1.5 - 7 mV/25, 50, 100 kohms (selectable)

Phono 2: 1.5 - 7 mV; nominal 5 mV/50 kohms

PWR AMPIN: 1 V/10 kohms

Overload levels:

Tuner, Aux, Tape 1+2: 9V

Phono 1, 2: 400 mV

Outputs:

Tape 2/Out (DIN): 6.5 mV/RL 10 kohms

Speakers A, B: 15.5 V/R min. 4 ohms;

Tape 1, 2 (phono sockets): 200 mV/RL min. 50 kohms

Tape 2 (Jack): 200 mV/RL min. 50 kohms

PRE AMP Out: 1 V/RL min. 10 kohms

Phones x 2: 15.5V/Ri 100 ohms

Signal to noise ratio, (with reference to 60 watts / 4 ohms):

Tuner, Aux, Tape 1, 2: better than 90 dB, (unweighted input termination 10 kohms)

Phono 1, 2: better than 70 dB, (unweighted input termination 2.2 kohms)

Channel separation (at 1000 Hz): better than 60 dB

Phono equalization (as per I EC 98 MOD 4 1976): 20 Hz - 20 kHz ± 0.5 dB

Tone controls:

Bass: ±8 dB in 2 dB steps at 120 Hz

Treble: ±8 dB in 2 dB steps at 8 kHz

Presence: ±8 dB in 2 dB steps at 3 kHz

Filter:

Low: 50 Hz, -3 dB (12 dB/octave)

High: 8 kHz, -3 dB (12 dB/octave)

Loudness: Volume -30 dB, 100 Hz; + 6dB, 10 kHz + 4dB

Semiconductors:

4 IC (voltage regulation), 107 transistors, 4 bridge rectifiers, 52 diodes

Current supply: 220/240 V, 50/60 Hz

Power consumption: 50 - 350 watts

Dimensions (W x H x D): 452 x 151 x 348 mm (17,8 x 6 x 13,7 inch)

Weight: 13 kg (28 lbs 10 ozs)

Call Dan at 617-680-5840 or email at dan@notable.com for more details.