new TK Audio BC501 Stereo Bus Compressor for 500 series

Swedish company TK Audio is announcing the release of their newest 500 series module, BC501 stereo bus compressor. Featuring all the power of TK’s flagship BC1‐ S, the new BC‐501 adds even more functions taken from the BC2‐ME mastering compressor, such as additional ratio settings (1.25:1, 6:1), a THD switch that adds more even harmonics to the signal, and three HPF settings from which to choose (80Hz, 150Hz, 220Hz).

All controls are detented for easy, precise recall. A dedicated Wet/Dry knob allows blending between the original and compressed signals, and an external sidechain input (accessible via stereo 1/8” mini TRS jack) is also provided.


  • Power requirement: +110mA  / -90mA (total)
  • Frequency response: 20Hz-20kHz +/-0dB,
  • Frequency response: 20Hz-80kHz +0dB/-0.1dB
  • THD+N @ 1kHz: less than 0.005%
  • Signal to noise ratio: 95dB
  • Cross talk: -90dB
  • Input impedance: 24kohm
  • Output impedance: 50ohm
  • Max input level: +26dBu
  • Max output level: +27dBu

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