GML 8300 Transformerless 4 Channel Microphone Preamp - Series II

Up for sale is a world-class GML 8304 4-channel microphone preamplifier, complete with its dedicated external GML power supply. Purchased brand new and recently decommissioned from active service in a pro studio, this reference-standard unit is globally revered for its astonishing, life-like realism and surgical transparency. Built around George Massenburg’s all-discrete, transformerless circuit topology, it captures audio exactly as it sounds in the room across four perfectly matched channels.

Condition & Details

• Studio History: Used with meticulous care in a smoke-free, climate-controlled professional recording environment and regularly maintained.
• External Power Supply Included: Package includes the required, external GML heavily-regulated power supply (which isolates AC noise and heat entirely away from the delicate 1U preamp chassis) along with the proprietary umbilical power cable.
• Functional State: 100% operational across all 4 channels. The precision multi-position rotary gain switches (stepping in perfect 5dB increments) and front/back panel toggles track seamlessly without any noise or drift.
• Cosmetic Condition: Pristine satin-grain black anodized faceplate with minimal, negligible rack wear. Silk screening and clip LEDs are perfectly intact and bright.

Ships securely packed, double-boxed, and fully insured.