Boulder - 812 DAC Preamplifier armboard Single input micro processor controlled

Single input micro processor controlled phono stage based on tube gain stages and LCR correction

in combination with the attenuator's 23 contacting-points that can be changed within a range of 0 dB to -50 dB

Apart from the low distortion level

it is designed with a rectification circuit with a ROHM high-speed switching diode and choke transformer for the high-voltage power supply and the 300B heater using DC ignition with a DC power supply

Boulder - 812 DAC Preamplifier armboard Single input micro processor controlledThrough the worldwide success of the 866, Boulder has expanded the 800 series with the 812 DAC, Preamplifier, headphone amp. By applying the design philosophy from the 866, and over 35 years of experience designing DACs, preamps, and amplifier circuits, you get a device that has precision, top of the line performance. Plus the quality and reliability you would expect from a Boulder product, in a refined package. The 812 is Boulders first headphone