” ATC-1 analog monosynth with 303 (Roland) & SEM (Oberheim) filter cartridges, manual, power cord
lively warm sound , lots of character & presence, rich leads, punchy & deep low end.
can be very smooth or aggressive, noticeably different/better than any analog VST/VA emulation .
this is a really ‘musical’ synth imo, suitable for club music, ambient, college rock & more. there are many many praises online for this synthesizer.
everything working as it should, theres a few minor scuffs on the sides from rack installation & removal.
marvelous when paired with a midi controller like the BCR 2000.” Click here to visit listing on eBay
“Studio Electronics ATC-1 Analogue Synth, With Minimoog Filter Cartridge. Condition is Used.”
” Used(Very Good) / perfect working condition
“Rare Studio Electronics ATC-1 synth in good condition. Works well, just some small peeling shown in pictures. All buttons and knobs function perfectly. Comes with 2 cartridges: Mini (modeled after Mini Moog) and 2600 (modeled after Arp 2600).” 
“Studio Electronics ATC-1 Analog Tone Chameleon w/ Minimoog filter cartridge. . Condition is Used. ” 
“Studio Electronics ATC-1 Tone Chameleon with ARP 2600 Cartridge – Excellent condition throughout and full working order.
“Studio Electronics ATC-1 Synth Module
“ATC-1 in very good condition, sounds excellent. Has all four modules built in, installed by Studio Electronics. Also has two switches installed by them, I forget what they do. Can also provide you with a killer Bome Midi Translator patch which controls all aspects via sysex.”