DAC-R
A two-channel digital-to-analogue converter with one isolated asynchronous USB input, two optical and two coaxial S/PDIF inputs. It suits listeners who want to feed a hi-fi system from a computer, CD transport or other digital source and use a remote control.
- 2x Wolfson WM8742 DAC chips in parallel
- 16 to 24-bit, 32 to 192kHz on all inputs
- Isolated asynchronous USB (XMOS USB Audio 2.0)
- 2 Toslink and 2 isolated coaxial inputs
- Optical and coaxial digital outputs
- Three user-selectable digital filters
Fotky
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The DAC R is a stereo PCM converter that handles 16 to 24-bit audio at sample rates from 32kHz to 192kHz on every input. It uses a pair of parallel-connected Wolfson WM8742 converter chips fed through a buffer stage. No sample rate conversion is applied, so audio is processed at the rate it arrives. Three user-selectable digital filters are provided.
The USB input is built around an XMOS USB Audio 2.0 interface with asynchronous clocking and is isolated from the host computer by a transformer. The optical and coaxial inputs go to a digital receiver with a low-jitter clock and a dedicated PLL, and these receiver stages have their own power supplies. The analogue output stage is a discrete differential design with a multiple-feedback filter. The power supply uses a toroidal transformer, and the control microcontroller has a separate supply from the audio circuitry.
Inputs are one USB, two Toslink optical and two isolated 75 ohm coaxial. Optical and coaxial digital outputs are also available, taken after the receiver and PLL. The unit sits in an aluminium and steel case and includes a remote control.
Video
Parametre
- Značka
- Rega
- Model
- DAC-R
- Kategória
- Hi-Fi a domáce audio › Iné Hi-Fi
Inputs
- USB input
- Asynchronous, isolated (24bit 44.1/48/88.2/96/176.4/192kHz)
- Optical inputs
- 2 x Toslink (24bit 32/44.1/48/88.2/96/176.4/192kHz)
- Coaxial inputs
- 2 x isolated 75Ω (24bit 32/44.1/48/88.2/96/176.4/192kHz)
Outputs
- Digital S/PDIF outputs
- Optical/Toslink and isolated 75Ω coaxial (via receiver and PLL)
- Maximum output level
- 2.175V into 100kΩ load
Audio
- DAC
- 2x Wolfson WM8742
- Bit resolution (all inputs)
- 16 to 24bit
- Supported data rates
- 32, 44.1, 48, 88.2, 96, 176.4, 192kHz
- Digital filters
- 3, user selectable
- Frequency response, low data rate
- 44.1/48kHz: 10Hz -0.05dB to 20.02kHz (44.1K) / 21.7kHz (48K) -0.03dB
- Frequency response, medium data rate
- 88.2/96kHz: 10Hz -0.05dB to 28.7kHz (88.2K) / 31.2kHz (96K) -3dB
- Frequency response, high data rate
- 176.4/192kHz: 10Hz -0.05dB to 44.1kHz (176.4K) / 47.7kHz (192K) -3dB
- Total harmonic distortion
- 0.006% @ 1kHz (all inputs, 24bit 96kHz)
- Signal to noise ratio
- -105dB (relative to maximum output level, 100Hz to 22kHz bandwidth)
Connectivity
- USB audio class
- XMOS USB Audio 2.0, asynchronous
- Remote control
- NEC system (6E91)
Power
- Power
- 230V/115V/7.6W
Physical
- Dimensions (W x D x H)
- 215mm x 320mm x 80mm
- Weight
- 4.0kg
- Case
- Custom aluminium and steel