Moving coil and moving magnet phono preamplifier with 5AR4 vacuum tube voltage regulation. Shielded R-Core power transformer, separate step up transformers for MC cartridges, separate inputs for MC or MM cartridges, MM optimized for 47 k ohm load, MC externally adjustable from 10Ω to 47kΩ loads. Fully regulated power supply section, dual triode vacuum tube buffer and gain stages. High gain design with 60 dB overall gain in the MC section. Black or silver anodized aluminum faceplate, black aluminum chassis standard. ZERO feedback design.