Trident 80B EQ 500 500 Series Four-Band Equalizer with Sweepable Mid Bands

Trident Audio Developments 80B 500 Series EQ PRO AUDIO - NEW - PERFECT CIRCUIT

Solid State Logic SSL B-Dyn 611B - 500 Series Dynamics Module

(Pair) Harrison Audio MR3eq 500 Series 3-band Parametric EQ

Klark Teknik DN370 Stereo graphic EQ

Aphex 230 Master Voice Channel Tube Mic Pre/Comp/Eq/Aural Exciter/Big Bottom

Drawmer DS404 Quad-Gate - 4 Channel Noise Gate

Fredenstein Artistic Equalizer (500 Series)