TK Audio BC1-THD

BC1-THD is a stereo bus compressor built for the kind of smooth, transparent control that helps a mix lock together without losing openness or detail. It delivers the classic “glue” effect engineers love, while adding a few smart extras that make it even more flexible in modern workflows.

The onboard blend control makes parallel compression fast and easy, the selectable sidechain filter helps keep low-end energy from over-triggering the compressor, and the THD mode introduces extra even-order harmonics for a slightly richer, more saturated tone. Engage Grab mode and the knee becomes firmer, giving the compressor a more assertive response when needed.

With stepped controls throughout, the BC1-THD is easy to recall and equally comfortable on the mix bus, drum bus, or during tracking.

Features
• stereo bus compressor
• smooth, transparent mix glue
• stepped controls for precise recall
• built-in blend control for parallel compression
• sidechain high-pass filter at 80 / 150 / 220 Hz
• THD mode for added even-order harmonics
• Grab mode for a harder knee response
• external sidechain input
• gain reduction meter
• internal regulated power supply with toroidal transformer
• switchable 115 / 230 V operation

Controls
• Threshold: -20 dB to +20 dB
• Ratio: 1.5:1 / 2:1 / 4:1 / 10:1
• Attack: 0.1 / 0.3 / 0.6 / 1 / 3 / 6 / 10 / 30 / 60 / 120 ms
• Release: 50 / 100 / 300 / 600 ms / 1.2 s / Auto
• Make-up gain: 0 to +20 dB
• Blend: dry to compressed
• Compression in/out
• Dry signal mute

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