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TK Audio BC2-ME

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Mastering Compressor with selectable Class A transformer coupled output

TK Audio’s vision is to make products that will satisfy our customers needs. During years of success with our BC1 we got a lot of requests of customize units with stepped controls, more suitable for mastering. Therefore we now launch BC2-ME, a unit perfect for mastering. Except for the stepped controls we also added some nice features like illuminated switches, switchable output-stage between electronically-balanced or transformer balanced class-A.

BC2-ME uses the same basic sound path as the BC1, plus the extra features. The class-A mode offers a more vintage tone, like fat, punchy low-end response with more low mid character. The output section is the same as we use in the DP1mk3. BC2-ME also has a switch that adds extra "even" harmonics to the compressed signal. The blend control offers 21 steps from straight to compressed signal.



  • All rotary controls stepped.
  • All push buttons illuminated. Soft light when not engaged. 
  • THD switch, adds extra harmonics (even) to the compressed signal.
  • Improved VCA circuit.
  • True bypass. 
  • Five HPF frequencies.
  • Gain-reduction meter with 20 LED’s, 0.5dB resolution.
  • Ratio starts at 1.25:1
  • Threshold -20dB to +20dB. 41 steps.
  • Make-up gain 0 to 10dB, 41 steps.
  • Output switchable between electronically-balanced or transformer-balanced class-A built around heavy Carnhill transformers.
  • Balanced, external side-chain inputs.
  • 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
  • Compressioni In/out
  • External sidechain: in/out
  • Dual or single sidechain detectors
  • THD: adds extra even harmonics
  • Class-A: selects the transformerbalanced class-A output stage
  • Straight signal mute
  • LED gainreduction meter in 0.5dB steps
  • Make-up:  0 to +10dB in 41 steps
  • Blendcontrol: from straight to compressed in 21 steps
  • Balanced input:  40kohm impedance
  • Balanced output:  100ohm impedance
  • External sidechaininput: balanced TRS jacks
  • Internal, regulated powersupply with a toroidal transformer
  • 115 or 230V, selectable.

Noise flooor: below 104dBm

Frequency response: 20Hz to 20kHz, less than -0.3dB

Distortion: less than 0.006% THD+N, @ +8dBm

Max output: +26dBm @ 600ohms load


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