Sophisticated headphone amplifier built-in with adjustable sensitivity.
Streaming capabilities, Roon endpoint, UPnP playback.
A software-enabled fixed DAC out option.
A dedicated Boulder app controls the 812 and makes custom setup adjustments.
Advanced circuitry enables the 812 to deliver greater current at maximum output without fear of damage to the amplifier's electronics
Volume knob and chassis machined in-house. All boards and parts assembled under one roof in the foothills of Colorado.
•4-Pin XLR Headphone Connector
•1/8” Headphone Connector
•1/4” Headphone Connector
•Pentacon Headphone Connector
•2 Pair XLR Analog Inputs
•1 Pair XLR Preamplifier Output
•4x USB Host
•2 Optical Digital Inputs
•Coaxial (RCA, SPDIF) Digital Input
•Based on 866 DSP Filter and DAC topology
•Configurable Headphone Sensitivity
•Available Fixed DAC out
•Control through Boulder Controller App
•Switch Between Headphone and Preamp Outputs
•Volume Knob & Chassis Machined In House
•100 db Optically Encoded Volume Control
•Innovative Protection Circuits