Eight Channel Microphone Preamplifier 

Transformerless design with matched hi-speed discrete transistor octet has +23 dBu input headroom: no attenuator “pads” needed 

Uncolored timbral accuracy at all dynamic levels 

Entirely balanced audio path with precision components maintains signal integrity: THD under 5 ppm (.0005%) 

Effortless, vividly realistic musical performance 

Laser-trimmed FET-based output stage has 32 dB headroom: drives 1000 foot (300 m) cable runs with ease 

Standard 36-step gain controls (1.5 dB per step) are stereo matched to .08 dB 

Ultra-clean universal power supply 

Grayhill mil-spec gold switching 

Welded 16 gauge steel rack chassis 

Lovingly hand-crafted in Northern California 

Technical Specifications