UltraDAC Logo

The UltraDAC is a higher grade version of the very successful PureDAC.

An advanced DAC? More exactly, a balanced DAC with reference level headphone and pre-amplifier.

The UltraDAC delivers a digital to analog converter of the highest quality. It combines its DAC with a balanced preamplifier, a reference-level balanced headphone amplifier, and B.M.C.'s exclusive Digital Intelligent Gain Management (DIGM), a volume and amplification control system that calibrates gain without dividing or downgrading the input signal.


The UltraDAC's balanced preamp is integrated with the DAC's current-to-voltage converter, which converts and filters the DAC's current, eliminating the need for an extra stage. The Preamp and headphone amp both employ B.M.C.'s exclusive Load Effect Free (LEF) technology that handles current demand separately from the voltage demand, and naturally avoids distortions, increasing the preamp and amp's quality of its audio reproduction.

UltraDAC benefits from the same features that made the success of PureDAC but going further in the numerical resolution and the final musicality for both, the line output and the amplification headsets.
It is equipped with separate volume controls for the preamp and the headphone, a high-resolution asynchronous USB interface, digital AES/EBU, Toslink and coaxial inputs, balanced analog outputs, RCA output jacks, and a special B.M.C. link for connecting directly to a B.M.C. amplifier. Its balanced output is ideally compatible with amplifiers featuring B.M.C.'s exclusive Current Injection (CI) technology, which enhances signal purity and the musical presence of the UltraDAC's audio reproduction.
UltraDAC Uhrwerk

Differences from the PureDAC: 

  • Top level local clock oscillator with super low phase noise and jitter

  • 70% larger power supply for perfect stability under all conditions

  • New hybrid LEF headphone amplifier with 15A bipolar voltage output devices and MOSFET current sources.

  • Vastly improved unbalanced standard headphone output with separate stage.
  • New hybrid LEF line stage with bipolar voltage output devices and MOSFET current sources.

  • SPDIF inputs with full 192kHz support.

  • Quiet cabinet with damping.

  • Operation with fixed line output available.

  • Remote control includes PureAmp functions.

UltraDAC RearFeatures

  • Top-grade Digital/Analog Converter with Current Injection current-to-voltage (I/V)  conversion

  • High-resolution asynchronous USB interface up to 32bit/384kHz

  • USB PCM: 16...32bit; 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384kHz.

  • DXD support without FIR filtering.
  • USB DSD: DSD64, DSD128.

  • ASIO driver for Windows; Linux and Mac compatible

  • AES/EBU, coaxial and Toslink digital inputs up to 24bit / 192kHz

  • Balanced, reference-class headphone amplifier with digital/analog power conversion (DAPC), load-effect free (LEF) technology, 15A bipolar Voltage output devices combined with MOSFET current sources, a super-low impedance LEF output stage, and lossless Digital Intelligent Gain Management (DIGM) volume control.

  • Balanced LEF, CI-compatible preamp that optionally operates in B.M.C. Mode, with DIGM and bipolar voltage source combined with a DMOS current source and LEF-balanced output stage.

  • Separate volume controls for the line and headphone sections (the line volume position 59 represents a DAC standard output level)

  • Second-generation DIGM with optimized gain distribution between power amps and internal and DIGM volume levels

  • Optical B.M.C. Link for connecting with B.M.C. amps like the PureAmp

  • Remote Control including PureAmp functions.

  • Top grade parts like MPP (conductive film polypropylene, non inductive) and balanced current capacitors, precision metal film resistors...
  • Massive and stylish extruded aluminum chassis

  • Dimensions: 14.37 x 4.06 x 12.91 inches, W/H/D (365 x 103 x 328 mm)

  • Weight: 7 kg


UltraDAC InsideUltraDAC open


UltraDAC CloseUp

UltraDAC headphone section


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