The Doc Lloyd DLA-2A Leveling Amplifier is a meticulous recreation of an iconic studio compressor, now directly compatible with guitar and bass input signals. Less than 25% the size and cost of the original with 100% authentic tone. It took multiple years of dedication to make this ambitious goal a reality, but finally it is here. The design includes Lundahl input/output transformers, 12AX7/12BH7 tubes, and a Kenetek T4B optical attenuator module. These components are expensive, but absolutely necessary to replicate this classic compressor's unsurpassed audio qualities. Two sidechain tubes are replaced with high voltage solid-state circuitry to significantly reduce size while leaving the original audio path fully intact. The line audio path is a precise match of the original schematic with a custom 275VDC low-noise internal power supply providing high voltage to the audio circuitry from a standard 12VDC input. This machine is the real deal.