Click to Zoom See PRICES for Regulators. Sparkos Labs Discrete Voltage RegulatorsSparkos Labs has created a family of discrete voltage regulators and adjustable style regulators for use in audio power supplies. They are available… NewClassD UWB Regulator MK 1The UWB Regulator is a high end replacement to 78XX and 79XX regulators found in CD / DVD players and other audio equipment, with positive and… NewClassD UWB2 Regulator MK 2Clean up your power supply with this newly release mark 2 version of the NewClassD regulator. NewClassD UWB2 5A High Current Regulator MK 3Rated at 5A, these high-performance voltage regulators are ideal for filament and heater supplies for valves.