slightly faulty vintage synthesizer analog siel orchestra (same as arp quartet) September 15, 2019 AnalogStuff 0
Arp Quartet Synthesiser. Bought new in 1980s. Perfect working order.01767 601230 June 1, 2019 AnalogStuff 0
Arp Quartet Vintage Analogue Polyphonic String Synthesizer (like Siel Orchestra) November 6, 2018 AnalogStuff 0
