DLA-2A: Leveling AmplifierA Studio Legend at Your Feet 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. Typical studio compressors require line level signals from low impedance sources. The DLA-2A has the standard transformer balanced line input as well as a high impedance input with a balanced gain stage, providing direct compatibility with guitar and bass. The compressed output signal is passed to a transformer balanced line output that can be connected to a mixing console or headphones as well as an instrument level output that can be connected to a pedalboard or amplifier. DC power is applied to the tube heater filaments and does not generate 60 Hz hum, resulting in lower noise than the classic reference design. COMPONENTS Lundahl 1922 Input Transformer Lundahl 5402 Output Transformer Kenetek T4B Classic Optical Attenuator Module Tung-Sol 12AX7 Vacuum Tube JJ 12BH7-A Vacuum Tube Calibrated VU Meter with Backlight Vishay Beyschlag Thin Film Professional Resistors Non-piezoelectric Class 1 Ceramic and Film Capacitors Daka-Ware Bakelite Knobs ACCESSORIES AC/DC Power Adapter Input and Output XLR Adapters Inline Power Switch CIRCUIT BLOCK DIAGRAM TECHNICAL DETAILS USER MANUAL / SPECIFICATIONS POWER SUPPLY RECOMMENDATIONS VIDEOS
