Orpheus MK1

The first our DAC Orpheus MK1 is based on CS4397 chip. This converter is a complete high-performance 24-bit, 48/96/192 kHz stereo digital-to-analog (D/A) conversion system. The device includes a digital interpolation filter followed by an oversampled multi-bit Delta-Sigma modulator, which drives dynamic-element-matching (DEM) selection logic. The output from the DEM block controls the input to a multi-element switched-capacitor D/A converter/low-pass filter with fully differential outputs.This multi-bit architecture features significantly lower out-of-band noise and jitter sensitivity than traditional 1-bit designs. The advanced DEM guarantees low noise and distortion at all signal levels.The CS4397 features multi-standard support for PCM (pulse code modulation), Direct Stream Digital (DSD), and external interpolation filters.We use passive I/V converter  with output transformers by Sowter .So we obtain equal frequency response and zero phase shift of the output signal . Separate analog and digital power sections feature National Semiconductor low-drop out (LDO) regulators.

 Battery Power supply unit

We use battery power supply with Valve Regulated Lead Acid Battery 12V/1,3Ah and automatic charge system. This allows reducing the noises from power supply. The sound is very clean with wide stage.

Technical data

  1. Frequency response: 10 Hz – 30 kHz
  2. Dynamic range 120 dB dynamic range
  3. THD+N -100 dB
  4. Output level: 2Vpp
  5. Output impedance: 47 kOhm
  6. Phase shift: < 2 degree
  7. Digital input: SPDIF
  8. Resolution: 24bit / 192 kHz ( I2S format )
  9. Dimension: Dac case 160 / 72 / 220  [mm]
  10. Power case: 160 / 72 / 220 [mm]
  11. Optional – luxury wooden case + engraving brass

6 Responses

  1. [...] 700 – RT Audio Design – Bulgaria – Orpeus MK1 + Power Supply [...]

  2. [...] 700 – RT Audio Design – Bulgaria – Orpheus MK2 + Power Supply [...]

  3. [...] 700 – RT Audio Design – Bulgaria – Orpheus MK3 + Power Supply [...]

  4. [...] 1500 – RT Audio Design – Bulgaria – Orpheus MK3+TVC + Battery Power Supply [...]

  5. [...] 700 – R&T Audio Design – Bulgaria - Orpeus MK1 + Battery Power Supply [...]

  6. [...] 700 – R&T Audio Design – Bulgaria - Orpheus MK2 + Battery Power Supply [...]

© Ratzov Tsenkov - Audio Design