ALCHEMY DDP-1

Refine and redefine digital

Unlike most digital preamps and DACs, the DDP-1 employs sophisticated digital processing that gives it superior sound quality, dramatic noise reduction and flexibility. The ability to select from four output filter profiles and output resolutions means that you can get the most out of each digital file. Layered on top is Audio Alchemy’s world-renowned jitter control technology, which gives digital files that smooth, velvety analog quality we all love. Add the modular PS-5, a balanced power supply to maximize the DDP-1’s dynamic range and filtering to produce a rich sound that can compete with much larger and more expensive units.

Sound engineering

The digital section uses dual 32/216 PCM/DSD AKM DACs with seven digital inputs. Internal DSPs provide four output filter profiles and user-selectable output resolution. A proprietary DAC configuration raises dynamic range of digital signals by approximately 8 bits, and a multistage phase-locked loop reduces jitter to the picosecond level. The analog section provides discrete FET driver and output stages, a high-precision Alps volume control and XLR and RCA inputs and outputs.


  • Product Information
    • Features

      • 3-in-1 Analog preamp, DAC with dual digital signal processors and headphone amp
      • Resolution enhancement from 16 to 24-bit and 24 to 32-bit digital signals
      • Seven digital inputs supporting a myriad of music players, PCs and media devices
      • Three analog inputs to ensure your entire music collection stays on heavy rotation
      • Small, highly attractive design equally at home in tabletop or desktop use in smaller rooms or offices or high-end system rack
      • Optional balanced power supply to boost overall performance
      • A USB connector allows easy firmware updates
      • Control is easy, thanks to an IR remote and illuminated front LCD

    • Specifications

      Frequency response ±0.05 dB, 20 Hz to 20 kHz; ±0.1 dB, 10 Hz to 80 kHz
      Nominal THD+N (1 volt) <0.001% at 10 volts output from analog input; 0.009% at 7 volts from XLR output; 3.5 volts from RCA output
      Signal-to-noise ratio (1 kHz)  103 dB unweighted
      Headphone amp output  1 watt at 32 Ω
      Maximum digital input sampling rate/bit depth ------
      32-bit / 216-kilohertz on PCM; 2.82 Mbps (DSD64) -------
      Input impedance  50 kΩ
      Output impedance  75 Ω
      Channel separation (1 kHz)  -123 dB analog input; -100 dB digital input
      Analog inputs  Stereo XLR, 2 stereo RCA
      Digital inputs USB, AES/EBU, 2 RCA coaxial, 2 Toslink optical, I2S, auxiliary USB for firmware updates
      Outputs  Stereo XLR and RCA, ¼-inch headphone jack, 12-volt DC trigger
      Digital filter profiles  Linear phase, fast roll-off; Linear phase, slow roll-off; Minimum phase, fast roll-off; Minimum phase, slow roll-off (apodizing)
      Available finishes Silver
      Dimensions (w x h x d)
      Width 267 mm
      Height 76 mm
      Depth 295 mm
      Net weight 3.6 kg

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