collapse expand iconDescription

The Undertone Audio UnFairchild 670M II compressor delivers flexible compression for musicians. Its painstaking recreation of the classic Fairchild circuit provides gentle level smoothing or explosive compression to make any recording leap out of the speakers. Careful adjustments to the circuitry improve tube lifespan and reliability, while added features like six original and four variable time constants, MS function, side chain processing and true bypass provide flexibility for any compression task. With the UnFairchild 670M II compressor, you have a compressor up to any recording challenge. Its simple yet elegant design, consisting of only two transformers and four paralleled vari-mu tubes, brings extraordinary musicality that's proven itself over decades on countless music genres. Whether you want to subtly tame peaks or dramatically energize a track, the UnFairchild 670M II compressor has the flexibility and sonic character to take your recordings to the next level.

Undertone Audio UnFairchild 670M II Compressor
Undertone Audio UnFairchild 670M II Compressor
Undertone Audio UnFairchild 670M II Compressor

collapse expand iconFeatures

  • Fairchild-style compression
  • Dual-channel tube compressor
  • 19" rack-mount chassis
  • Adjustable DC threshold

collapse expand iconSpecs

  • Unit Weight: 37.4 lb.
  • Tube or Solid State: Tube
  • Channels: Dual-Channel
  • Chassis: 19" Rack-Mount
  • Rack Spaces: 8U
  • Input Connectors: Analog XLR
  • Output Connectors: Analog XLR
  • Impedance: 2.5 kOhms (input); 200 Ohms (output)
  • Compression Type: Fairchild-Style
  • Tube Complement: 6386-LGP, ECC83, ECC83-S, ECC99

Featured Articles