Black Lion Audio B172A – 2-channel hybrid FET/optical compressor combining Seventeen FET (1176-inspired) and T4BLA optical (LA-2A-inspired) circuits in one 2U chassis. Allows signal routing in any order (A/B, B/A, or independent), with Cinemag input transformer (LA-2A side) and Chicago-wound output transformers (both). Custom T4BLA optocell for precise compression. Ideal for mixing vocals, drums, and guitars, with stereo link and high-grade components.
MAIN FEATURES
- Combination of FET (Seventeen) and optical (T4BLA) in one unit
- A/B, B/A, or independent routing via switch
- Cinemag and Chicago-wound transformers for warmth and clarity
- Stereo link for both circuits
- High-grade capacitors and signal path
- Limit/Compress switch on LA-2A
- Meters for GR and output level
- Handbuilt in USA
TECHNICAL SPECIFICATIONS
- Channels: 2 (FET + opto)
- Seventeen (FET): Attack 20–800 µs, Release 50–1200 ms, Ratio 4:1/8:1/12:1/20:1, THD <0.3% (50 Hz–20 kHz)
- 2A (Opto): Attack/Release via T4BLA, Frequency ±1 dB 15 Hz–20 kHz, Gain up to 40 dB ±1 dB
- Power: 115/230V AC (switchable), fuses T2AL/F2AL
- Dimensions (WxHxD): 438 x 88 x 250 mm (2U)
- Weight: 8 kg
- Connections: XLR input/output (balanced)
- Included: Power supply, manual






