Bang & Olufsen BEOMASTER 4000

A stereo receiver with FM tuner, rated at 60W+60W RMS, released with a price of ¥215,000 around 1973.

Overview

The Bang & Olufsen BEOMASTER 4000 is a stereo receiver featuring an integrated FM tuner. Built by Bang & Olufsen, it delivers 60 watts per channel RMS into two channels, with a frequency response spanning 20 Hz to 30 kHz. It includes an Ambiophonic function in the tuner section, aimed at enhancing spatial sound reproduction. The unit weighs 10kg and has a wide, low-profile design measuring 580 mm in width, 95 mm in height, and 270 mm in depth.

Specifications

Output	60W+60W (R.M.S.)
Frequency response	20 Hz to 30 kHz
Distortion factor	0.06%
Channel separation	45dB
Tuner Section Accessory function	Ambiophonic
External dimensions	580 mm (W) x 95 mm (H) x 270 mm (D)
Weight	10kg
Original price	¥ 215,000 (approx. 1973)

Market

A pricing guide based on 20 Years of Hi-Fi Marketplace sales data has been used to research the BEOMASTER 4000's worth, though specific current values or collectibility trends are not documented.