Beomaster 1000 – a compact all-transistor hi-fi 2 x 15 watt stereo amplifier equipped with a highly selective FL radio with extended FM band (to 108 MHz), 3-gang tuning capacitor and 4-stage intermediate-frequency amplifier, automatic control circuit which locks on FM stations and keeps them accurately tuned. Only available in one cabinet style, the Beomaster 1000 was dedicated to high fidelity reproduction, and included an FM-only radio tuner and a 2x20W stereo amplifier. 20W was a lot of power in the mid 60s, especially from such a compact and elegant unit. It is prepared for single-transmitter stereo broadcasts, having a B&O multiplex adaptor; it is also equipped with a pilot lamp which lights up when the receiver is tuned to a station transmitting an FM stereo programme.

The controls took the ‘Piano key’ concept made popular in large European radios and re-arranged it into something new: FM Broadcasting, FM Automatic Frequency Control; Tape Recorder; Gramophone 1; Gramophone 2. The radio section, being FM only, was able to be focused on providing really good results. A stereo decoder could be fitted as an optional extra, the operation of which was displayed by a large green “stereo” lamp set into the dial. The action of the tuning knob was made smooth by the fitting of a heavy flywheel to its shaft.

As well as source selection, the keys also controlled two pairs of loudspeakers and filters for ‘Rumble’ and ‘Scratch’. Two record players could be connected, initially both of the type with ceramic pickups, though an optional preamplifier could be fitted inside the Beomaster so that a B&O magnetic pickup could be connected directly. To complement the front key markings, a second miniature tuning dial was also fitted at the front of the cabinet. The styling work was the first project at B&O for Jacob Jensen, a designer whose work would later become very influential over all B&O’s products.

This is a completely cleaned and restored item. All parts are original. Tested, all functions work properly.

Specifications

Manufacturer: Bang & Olufsen

Model: Beomaster 1000

Type number: 2317

Serial number: 1792005

Type: Receiver

Made in: Denmark

Designer: Jacob Jensen

Colour: Rosewood, Teak, Silver

Dimensions: 505 x 250 x 80 mm

Weight: 5,5 kg

Technical Data

Amplifier

Voltage: 110 – 130 – 220 – 240 V

Power consumption: 120 watts

Continuous power 15 watts

Dynamic power 20 watts

Total harmonic distortion: < 1%

Frequency response: 30-30000 Hz

Tone control:

- Bass: +10 dB-17 dB at 60 Hz

- Treble: +12-16 dB at 12.5 kHz

RIAA amplifier: Built-in

Tuner

Reception: FM

Frequencies:

FM: 88 - 108 Mhz

Input sensitivity: 2.5 µV 30 dB

Distortion factor: - 1%

Signalrauschabstand: 60 dB

FM 88 – 108 MHZ

Connections

Number of inputs:

- Phono 1: 25 mV, 500 kOhm

- Phono 2: 200 mV, 47 kOhm

- Tape 220 mV, 500 kOhm

- Mic: 100 μV, 200 Ohm

Number of outputs:

- 4 x 3.5-5 Ohm speakers