Project Description

  • Blend control for parallel compression.
  • All controls stepped for easy recall.
  • High Pass filter on the sidechain with 5 frequencies.
  • Low ratios for mastering.
  • THD circuit that adds more even harmonics.
  • Smooth compression.
TK Audio’s BC2-ME is a perfect tool for mastering. It is based on the same basic sound path as the BC1, added with some nice features like illuminated switches and switchable output-stage between electronically-balanced or transformer balanced class-A. The class-A mode offers a more vintage tone, like fat, punchy low-end response with more low mid character. BC2-ME also has a switch that adds extra “even” harmonics to the compressed signal.

Noise floor: below 104dBm
Frequency response: 20Hz to 20kHz, less than -0.3dB
THD+N: less than 0.006% @ +8dBm
Max output level: +27dBu @ 600ohms load
Threshold: -20dB to +20dB
Ratio: 1.25:1 / 1.5:1 / 2:1 / 4:1 / 10:1
Attack: UF (ultrafast) /0.1/0.3/0.6/1/3/10/30/60/120mS
Release: 50mS/100mS/300mS/600mS/1.2S/Auto
HP Filter: 75Hz, 100Hz, 125Hz, 150Hz, 250Hz, -6dB octave
Compression: in/out
External sidechain: in/out
Dual or single sidechain detectors (L+R)
THD: adds extra even harmonics
Class-A: selects the transformer balanced class-A output stage
Straight signal mute
LED gain reduction meter in 0.5dB steps
Make-up: 0 to +10dB in 41 steps
Blend control: from straight to dry in 21 steps
Balanced input: 40kohm impedance
Balanced output: 100ohm impedance
External sidechain input: balanced TRS jacks
Regulated, internal power supply with a toroidal transformer
Selectable between 115 and 230V

Specifications and components may be changed or updated without further notice.


Recall sheet

Front BC2-ME (jpg)
Front BC2-ME (png)
Front BC2-ME (eps)

Audio Clips:

Unmastered track, only peak limited.

Clip 1. Ratio 2:1 / Attack 10mS / Release 100mS / HPF 150Hz / 3dB gain reduction

Clip 2. Ratio 2:1 / Attack 10mS / Release 100mS / HPF 150Hz / Class-A on / 3dB gain reduction

Clip 3. Ratio 2:1 / Attack 10mS / Release 100mS / HPF 150Hz / Class-A on / THD on / 3dB gain reduction

The audio file is a part of the song “Calling” from the album “In this skin” by Swedish artist Mary Jet / Mariette, Solid Union 2008.

I love the BC2-ME. I leave it strapped on my master bus when tracking in class-A mode. I love the extension in the low-end the transformer adds. The BC2-ME has been the glue on every record since I have owned it, I love the THD and the HPF. It’s the classiest compressor, it´s similar to my NTP’s, I must love the Scandinavian sound.
Bill Raynolds / U.S.

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