TK-Audio BC1 Mk1 Bus Compressor

The BC1-Mk1 delivers smooth, musical SSL- style bus compression that works equally well for mixing and tracking.

With its built-in blend control, parallel compression is effortless: just dial in the perfect mix of dry and compressed signal. A switchable sidechain high-pass filter helps the compressor react less to low-end energy, preserving punch and clarity in bass-heavy material.

Whether you’re after subtle glue or a more characterful tone, the BC1 is a versatile and transparent tool in any studio setup.

Key Features:
• Smooth, transparent bus compression
• Blend control for instant parallel processing
• Switchable sidechain filter (3 frequency options)
• Grab function for a harder threshold knee
• Stepped controls for precise, recallable settings

Pristine working and visual condition. Some minor scratches as seen on the photos.

Serial no: #TKA-1105-657

PSU is switchable between 115V and 230V, currently set to work on 230V. EU power cord included.

US and EU parcels ship via UPS, ETA 1-7 working days from pickup day zero. That also applies to most locations worldwide.

All shipments are fully insured.

Bigger shipments requiring pallets or custom made crates ship to US, CA, JP, CN, AU and other outside of EU locations via DHL Air Freight, ETA is normally approx. 7-14 working days from pickup day zero.

Big shipments inside EU ship via different freight companies, recently mostly via ACE Logistics. Freight forwarders can use different courier companies for deliveries to final destinations.

Palletising and crating time can vary depending on the size of the shipment and packaging queue. We pack all our shipments with great care.

You are most welcome to pick your order up yourself from our Retrosonic Pro Audio showroom, studio and warehouse in Tallinn, Estonia.

We ship worldwide – contact us for a personal shipping quote or any other questions.

VAT (Value Added Tax) can be deducted if you have a company with a valid EU VAT number or if you're based outside of the EU. Non-EU buyers pay all and any import tax and duty as regulated by their local customs.