OP-DAC1 D/A Converter Board


The OP-DAC1 is an optional D/A converter board designed exclusively for ESOTERIC products that has dedicated board slots. The OP-DAC1 has x1 USB, x1 coaxial and x1 optical digital inputs. The coaxial and optical inputs are compatible with both 192kHz/24-bit PCM, while the USB port supports asynchronous transmission and native playback of 2.8/5.6/11.2MHz DSD and 384kHz/32-bit PCM. Utilizing Esoteric’s proprietary PC driver software in combination with its free HR Audio Player, the OP-DAC1 provides high-resolution playback of even studio master-quality source files.

ESOTERIC HR Audio Player

Windows/Mac application for 11.2MHz DSD and 384kHz PCM audio file playback. Available for download, free of charge.

Supported file formats

  • DSF DSD 2.8 / 5.6 / 11.2MHz
  • DSDIFF DSD 2.8 / 5.6 / 11.2MHz
  • PCM (wav) 44.1k -384kHz,16 – 32bit
  • FLAC 44.1k – 384kHz,16 – 32bit
  • ALAC 44.1k – 384kHz,16 – 32bit
  • AIFF 44.1k – 384kHz,16 – 32bit
  • MP332k – 320kbps
Digital Audio Inputs
RCA Terminals x1
Input Level 0.5Vp-p
Input Impedance 75Ω
Input Signal Formats 32 – 192kHz, 16 – 24-bit , Linear PCM (IEC 60958 format)
Optical digital connector ×1
Input Level -24.0 to -14.5dBm (peak)
Input Signal Formats: 32 – 192kHz, 16 – 24-bit, Linear PCM (IEC 60958 format)
USB-B connector x1 Input Signal Formats 32 – 384kHz, 16 – 32-bit, Linear PCM 2.8MHz, 5.6MHz, 11.2MHz DSD


Declaration of Conformity (PDF) TBD