Black Lion Audio B172A 2-Channel Hybrid FET/Optical Compressor is a used item in excellent condition, listed on Reverb. The asking price is £673. It is offered by Black Box through Reverb. It is in our Compressors & Dynamics category. Used Gear Hunter first saw this listing on 29 October 2026 and last saw it on 10 November 2026. It has been seen 21 times in our scans. Prices are converted from the seller's currency when we scan the listing, so the amount you pay may differ slightly. The seller sets shipping, and import duty or VAT may apply, so check the final cost and the item's details on Reverb before buying.

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Great compressor in excellent condition. 1176 style compressor with 2A style (with T4B, tubes, and transformers) compressor in one box. Ships fast, insured, in original box, with power supply. Description from BLA: B172A Hybrid FET/Optical Compressor Two legendary compressors in a single chassis. It combines the company’s Seventeen compressor, inspired by the classic ’76 FET limiter, with a ’2A-style tube optical compressor. The two circuits can be used independently or chained in either order. A common setup is FET into opto for vocals, with the ’76-style side catching peaks and the ’2A side providing smoother compression. The B172A can also run two unrelated signals in dual-mono mode. The unit uses a CineMag input transformer on the ’2A side, Chicago-wound output transformers on both circuits, high-grade signal-path and decoupling capacitors, and a custom T4BLA optical element developed for the ’2A section. Technical highlights include a 4:1 to 20:1 ratio range, continuously variable 20 µs–800 µs attack, 50 ms–1200 ms release, XLR and 1/4-inch inputs and outputs, A/B or B/A routing, and a 2U rack format.

Black Lion Audio B172A 2-Channel Hybrid FET/Optical Compressor

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