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Radford HD250

High Definition Stereo Control Amplifier (1974)

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Radford HD250


The Radford HD250 is in practice a ZD22 preamplifier plus a dual channel power amplifier and large power supply.


Power output: 50 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 32kHz

Total harmonic distortion: 0.02%

Input sensitivity: 2mV (MM), 100mV (line)

Signal to noise ratio: 80dB (MM), 88dB (line)

Dimensions: 430 x 115 x 280mm

Weight: 9kg

Year: 1975


service manual   English - giumaz

technical instructions   English - keriboulo

brochure   English - keriboulo

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This website is not affiliated with or sponsored by Radford. To purchase HD250 spares or accessories, please contact the company via their website or visit an authorised retailer.