Crumar Bit One

Crumar Bit One Image

The Bit One is a 6 voice programmable polyphonic analog synthesizer with digital control that rivals the Roland Juno-106 synthesizer. The 61-note keyboard is equipped with velocity which is a rare option among similar synths! The 2 computer controlled oscillators, 6 voltage controlled filters, 6 VCAs and 2 LFOs each per voice, easy hands-on editing and a double/split mode keyboard make this one phatt analog polysynth! A few let-down features of the Bit One stand in the way of an otherwise great synth. The MIDI implementation is useable but poor and there are only 63 memory patches. The Bit One has been used by 808 State and Cirrus.

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19 Visitor comments
September 22, 2010 @ 4:15 pm
Complete rubbish, still popping up on ebay because somebody realised they made a mistake and is trying to off load it onto someone else.
August 22, 2010 @ 1:06 pm
Totally agree with first poster. I remember trying out one of the "chase" branded ones in Manchester when they first came out. Totally thin sounding, but packed with features for those days, which is why some people bought it. Much better on paper tha in reality - people just look back with rose tinted spectacles and use words like "phatt", when they should say actually pretty thin, weedy and out of tune.
April 8, 2010 @ 2:10 pm
I got one a few days ago and almost gave up due to the awful programming mode.
Once I started to get an idea of how to use it and program it, I got some excellent sounds out of it. The biggest problem is the factory patches all have a lot of extra stuff turned on etc. I am able to get quite a nice Oberheim quality out of it. I was also pleased to find it had a J wire keyboard and SSM VCF and VCA chips (first 300 made). Like others have stated, the MIDI implementation is minimally useful at best and the programming is no fun. It is indeed a wicked find.
April 2, 2010 @ 8:01 am
hi there!
i got one but there are only noise sounds on is very old and can i put new presets on the bit it possible?i know i can do thi sfrom a tape but what excactly do i need?
September 14, 2009 @ 7:49 am
Got one recently, the standard sounds are quite poor UNTIL you press the 'double' button then things dramatically improve press 'unison' and a serious quality emerges, shame the tape interface is appaling :(

Has a warm almost analogue sound, far warmer than my DX7!
VSE Rating

It’s Good

User Rating

Rated 3.34 (202 Votes)

  • 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 - 6 voices
  • Oscillators - 2 DCOs per voice (triangle, sawtooth, pulse waveforms, noise)
  • LFO - 2 LFO's (triangle, ramp and square waveforms)
  • Filter - 1 VCF Resonant filter with ADSR per voice
  • VCA - 1 VCA ADSR envelope per voice
  • Keyboard - 61 keys (with velocity)
  • Memory - 63 user patches
  • Control - MIDI
  • Date Produced - 1984 - 86

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