BitHeadz Retro AS-1

Retro AS-1 Image

The Retro AS-1 is a full featured programmable analog synthesizer for Macintosh and PC computers. Taking a modular approach you create and link modules of oscillators, envelopes, filters and LFO sections. The results can create stunning analog synth sounds in a clean 44.1kHz digital environment. The AS-1 is fully MIDI equipped and works with sequencers and MIDi controllers. However it has an on-screen keyboard and can also be triggered from the computer keyboard.

New patches can be stored on your hard disk for a virtually unlimited amount of user patches! The AS-1 has such extensive and complete editing and parameter control that it could intimidate, even baffle some users. Be sure and try the FREE DEMO version and see if the professional Retro AS-1 polyphonic synthesizer is for you!

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The link above will take you to an eBay search for this synth to see active listings with more images, specs and information. If you don't find it there, try looking in our forum marketplace. Our marketplace gets thousands of visits every week so make sure to check back often if you want to buy or sell a synth.

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Are you looking to buy or sell a BitHeadz Retro AS-1? Post an ad in Gear For Sale or a request in Gear Wanted. For spare parts and repair services check out Gear Services & Other Goods. Our forums also has a Buyer’s Guide section where you can ask for advice on buying synthesizers.

12 Visitor comments
October 8, 2011 @ 7:20 pm
Forgot to add that the files also include a PDF of the Retro AS-1 manual for Mac OS and Windows 95 if anyone is interested...
October 8, 2011 @ 7:17 pm
I just found a demo version of the Retro AS-1 in the multimedia section of Wendy Carlos' "Switched-On Box Set" CD collection from 1999. Sadly, the program is in Classic, so I cannot open it using OS X. So I am none the wiser as to how it sounds ... it's rather like a piece of digital amber...
February 8, 2011 @ 8:00 pm
This was the very first soft synth I bought, back in the way back when. Needles to say, I never managed to make it work, so I have no idea of what it sounded like...
November 5, 2010 @ 9:57 pm
i used this on my first record.
Will Puckett
September 17, 2010 @ 10:44 am
Most of us ended up at Digidesign :-)
The architect/designer went back East and continued his work with Korg. Good times.

I still have Unity Session on my ProTools MAC 10.3 rig. Retro AS-1 2.x was better is certain ways with the original sound set, but the Session version was far more robust on XP.
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  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - Up to 32 notes
  • Oscillators - 3 oscillators per voice: Saw, Pulse, Triangle, Sine, Sine squared, Glottal, Noise (white, pink, red)
  • Memory - Unlimited
  • Filter - 2 filters: 13 filter types, including 4-pole resonant lowpass, highpass, bandpass, allpass, notch, and state-variable
  • LFO - Dozens of LFOs, 6 shapes, midi sync, modulate almost any source and destination
  • Keyboard - On-Screen keyboard
  • Arpeg/Seq - Arpeggiator: Midi sync, multiple modes
  • Control - MIDI (16 parts)
  • Date Produced - 1998
  • Resources & Credits
  • Images from Bitheadz web site.

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