Over 130 Optimized Signal Topologies Twin Mic Preamps — M-2B vacuum tube or HV-3 discrete solid state Twin NSEQ-2 Mastering-Grade Parametric EQs — vacuum tube or discrete solid state Three Opto Compressor/Limiter Paths — TCL vacuum tube, discrete solid state, passive Twin Opto De-Esser Paths — vacuum tube or discrete solid state Vacuum tube or discrete solid state line level paths Input coupling with or without MIT-01 audio transformer 1/4” vacuum tube DI input — route via tube or solid state gain path Effortless, lifelike musical performance at all levels Musically rich vacuum tubes available Gold audio connectors, tube sockets, relays and switches 3/8“ thick radius extruded aluminum face plate Durable black laser-etched anodized finish Mil spec 16 gauge cold-rolled steel chassis Ultra-clean toroid power supply: internal sub-chassis Hand machined aluminum knobs, illuminated IT&T pushbuttons True audio VU meter for output level or dynamics gain reduction Lovingly hand-crafted in Northern California