Bang & Olufsen - BeoMaster 901 Solid state amplifier
06
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Selected by Ariel Cabello
Holds dual bachelor's degrees in electronics and physics with 20 years in audio engineering.
Estimate € 230 - € 280
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Beomaster 901 by Bang & Olufsen, in very good condition and tested for use, weighing 5.5 kg, produced between 1972 and 1977.
AI-assisted summary
Description from the seller
Beomaster 901 in 1977/78 was the simplest receiver from Bang & Olufsen. However, no compromises were made regarding quality. The tuner section covered long wave, medium wave, and FM bands with a very high standard of reception quality.
Tuning was performed using a slider that moved smoothly along a clearly marked scale. The backlit indicator and the AFC (automatic frequency control) circuit helped in easy and precise tuning. The MONO control button disconnects the built-in stereo decoder when proper stereo reception is disrupted by bad weather conditions or other interference.
The large tuning range of the Beomaster 901 allows for tuning FM stations, long waves, and medium waves. The tuning slider had small knobs that facilitated precise tuning. AFC locked the receiver onto the desired station.
The stereo amplifier had an output power of 2 x 20 W RMS, and special transistors with Darlington feedback in the output stages kept distortions at a minimal level – below 0.3% at full power. It included connections for two pairs of speakers and a pair of headphones. There were also sockets for connecting a tape recorder, a turntable, and AM and FM antennas. Easy-to-use sliders controlled volume, balance, bass, and treble, while narrow buttons allowed selection of the waveband, tape, or recording input.
Indoor FM antenna
To receive FM programs, the Beomaster 1001 must be connected to an FM antenna. Within a certain range of the transmitter, a Bang & Olufsen FM room antenna model 8902010 can be used. The antenna was easy to install, and the telescopic elements could be extended and positioned conveniently.
The Beomaster 901 set can be part of the Beosystem 901 set, which includes the Beogram 1102 disc player, the Beocord 1101 cassette recorder, and two Beovox Uni-Phase S25 or P30 speakers.
Product details
Type number:
2602
Release date
1972, 1973, 1974, 1975, 1976, 1977
Designer:
Jakuba Jensena
Color / Finish
oak, rosewood, teak
Output power: 2 x 20 W/8 ohms, 2 x 19 W/4 ohms
2 x 40 W/8 ohms, 2 x 25 W/4 ohms
Speaker impedance: 4 ohms.
Harmonic distortions: < 0.1%
Intermodulation: 50 dB
Channel separation: > 50 dB
Bass control: +/- 17 dB
High-frequency tone adjustment: +/- 14 dB
FM tuner range: 87.5 – 104 MHz
AM tuner range: 147 – 350 kHz, 520 – 1610 kHz
Power supply: 110 – 130 – 220 – 240 V, 50 – 60 Hz
Power consumption: 15 – 120 W
Dimensions (W x H x D): 7.5 x 50 x 22.8 cm
Weight 5.5 kg
Connections: DIN tape
Gramophone DIN
1 set of speakers
Beomaster 901 in 1977/78 was the simplest receiver from Bang & Olufsen. However, no compromises were made regarding quality. The tuner section covered long wave, medium wave, and FM bands with a very high standard of reception quality.
Tuning was performed using a slider that moved smoothly along a clearly marked scale. The backlit indicator and the AFC (automatic frequency control) circuit helped in easy and precise tuning. The MONO control button disconnects the built-in stereo decoder when proper stereo reception is disrupted by bad weather conditions or other interference.
The large tuning range of the Beomaster 901 allows for tuning FM stations, long waves, and medium waves. The tuning slider had small knobs that facilitated precise tuning. AFC locked the receiver onto the desired station.
The stereo amplifier had an output power of 2 x 20 W RMS, and special transistors with Darlington feedback in the output stages kept distortions at a minimal level – below 0.3% at full power. It included connections for two pairs of speakers and a pair of headphones. There were also sockets for connecting a tape recorder, a turntable, and AM and FM antennas. Easy-to-use sliders controlled volume, balance, bass, and treble, while narrow buttons allowed selection of the waveband, tape, or recording input.
Indoor FM antenna
To receive FM programs, the Beomaster 1001 must be connected to an FM antenna. Within a certain range of the transmitter, a Bang & Olufsen FM room antenna model 8902010 can be used. The antenna was easy to install, and the telescopic elements could be extended and positioned conveniently.
The Beomaster 901 set can be part of the Beosystem 901 set, which includes the Beogram 1102 disc player, the Beocord 1101 cassette recorder, and two Beovox Uni-Phase S25 or P30 speakers.
Product details
Type number:
2602
Release date
1972, 1973, 1974, 1975, 1976, 1977
Designer:
Jakuba Jensena
Color / Finish
oak, rosewood, teak
Output power: 2 x 20 W/8 ohms, 2 x 19 W/4 ohms
2 x 40 W/8 ohms, 2 x 25 W/4 ohms
Speaker impedance: 4 ohms.
Harmonic distortions: < 0.1%
Intermodulation: 50 dB
Channel separation: > 50 dB
Bass control: +/- 17 dB
High-frequency tone adjustment: +/- 14 dB
FM tuner range: 87.5 – 104 MHz
AM tuner range: 147 – 350 kHz, 520 – 1610 kHz
Power supply: 110 – 130 – 220 – 240 V, 50 – 60 Hz
Power consumption: 15 – 120 W
Dimensions (W x H x D): 7.5 x 50 x 22.8 cm
Weight 5.5 kg
Connections: DIN tape
Gramophone DIN
1 set of speakers
Details
Era
1900-2000
Brand
Bang & Olufsen
Model
BeoMaster 901
Physical condition
Very good
Nr of items
1
Includes
No extra's
Weight
5.5 kg
Functional condition
Tested and working/playable
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