Purple Audio MC77 Limiting Amplifier Compressor

IGS Audio 576 Blue Stripe 500 Series 1176 Rack Mount Compressor Peak Limiter #1

Lindell Audio LiN 76 Single-Channel FET Compressor/Limiting Amplifier

Klark Teknik EQP-KT Classic Tube Equalizer |

Klark Teknik 76-KT Classic FET-Style Compressor Limiting Amplifier - Rack Mount

Klark Teknik 76-KT Classic FET-Style Compressor Class-A Line Level Amplifier

1965 Universal Audio 508 Vintage Equalizer Module LCR EQ '66 UA 508-AV Unit

Klark Teknik DN360 2 Channel 30 Band Graphic Equalizer - Seven Available