Black Lion Audio Seventeen 500 Single-Channel FET Compressor (500 Series Module)Compress vocals, guitars, drums, basses, and virtually all things with the Black Lion Audio Seventeen 500, the company's double slot, 500 series adaptation of its 19" rackmount Seventeen single channel compressor. Seventeen 500 is all about modernizing the classic '76 FET compressor limiter engineers and musicians all know and love by keeping what works and sounds great while adding modern features and conveniences not found on the original '76. With