Armstrong Audio 521 | Audio-Digital.net

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Stereo Amplifier 521 Ampl/Mixer Armstrong Audio / Wireless

https://www.radiomuseum.org/r/armstrong_stereo_amplifier_521.html

The A15 power amplifier board. Armstrong Audio / Stereo Amplifier 521 uploaded by Mike Edwards † 25.10.21 (2) The Armstrong 521 control/preamp board C16. Armstrong Audio / Stereo Amplifier 521 uploaded by Mike Edwards † 25.10.21 (2) …

Steve's - Armstrong Audio 521 solid state amplifier

http://www.audiocircuit.com/Home-Audio/Armstrong-Audio/521

The Armstrong Audio 521 is a integrated amplifier in the solid state amplifier category. James Wong (June 15, 2009): The 521 was a terrific little amplifier with a very sweet English sound, much underrated today. Along with the 600 series, the 521 was one of Armstrong's most popular amplifiers and offered value for money with excellent styling ...

Armstrong Audio - Armstrong 521

https://www.liquisearch.com/armstrong_audio/armstrong_521

The Armstrong 521 was a stereo hi-fi amplifier from the Armstrong Audio company and was marketed as 2 x 25W amplifier.. It employed germanium AL102 transistors in its output stages and these had a reputation for failure and are now unobtainable although it is possible, with modification to replace these with newer, silicon transistors.

The Armstrong 521 Amplifier - Jim's Audio Pages and Websites

http://www.audiomisc.co.uk/Armstrong/500/500page2.html

The Armstrong 521 Amplifier. The 521 received enthusiastic reviews in Hi-Fi magazines, both in the UK and elsewhere. As well as offering good performance it was seen as providing value for money and excellent styling. The 500 units also were given a UK Design Council award for their appearance and ergonomics.

Armstrong 521 test - YouTube

https://www.youtube.com/watch?v=Q08gYhENvCQ

Armstrong 521

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