PPA-1 Ultra-Quiet Phono Stage
The PPA-1 uses all-analog, discrete FET gain and EQ stages to transform the microscopic grooves in vinyl records into stunningly lifelike music. It includes all the features such as continuously-variable input loading, MC/MM gain switching and XLR and RCA outputs. It can also be upgraded by adding the PS-5 power supply, which can simultaneously power the PPA-1 and one other Alchemy component, such as the DDP-1 digital preamp.
Magical analog musicality
In our view, analog signals from vinyl records are already perfect when they leave the phono cartridge; all they need is to be handled with the utmost care in their path to the preamp. That’s why we use all-discrete, ultra-low-noise FET circuits for the PPA-1’s RIAA EQ and gain stages, with no integrated circuits in the signal path. It’s also why we provide an easy upgrade path. Just replace the supplied power supply with the PS-5, which offers superior filtration, tighter voltage regulation, lower noise and greater energy storage.
Transforms to suit any system
Serious vinyl enthusiasts need more than just the basic options, so we give them what they need. Load impedance is independently, continuously adjustable for both inputs, so optimal performance can be achieved with any cartridge and you’re not locked into specific settings. Either input can be set for MC or MM gain, and balanced XLR outputs are provided in addition to single-ended RCA outputs.

  • Product Information
    • Features

      • Fully discrete, all-analog FET design with no ICs in signal path
      • Selectable MM or MC gain
      • Two single-ended RCA inputs with continuously adjustable loading
      • Balanced XLR and single-ended RCA outputs
      • Upgradeable through addition of PS-5 external power supply

    • Specifications

      Frequency response ±0.1 dB, 10 Hz to 20 kHz
      Nominal THD+N <0.005% at 1 kHz
      Signal-to-noise ratio (1 kHz) High-gain input shorted: 67 dB unweighted, 76 dB A-weighted
      Low-gain input shorted : 84 dB unweighted, 90 dB A-weighted
      Gain High-gain setting : 67 dB
      Low-gain setting: 49 dB
      Input sensitivity (1 kHz) High gain : 450 ?V input for 1 VRMS balanced output
      Low gain : 3 mV input for 1 VRMS balanced output
      Input impedance Fixed 47 kΩ or variable 1Ω to 1000Ω
      Output impedance  100Ω unbalanced, 100Ω per leg balanced
      Channel separation (1 kHz)  High gain : -88 dB
      Low gain : -100 dB
      Inputs  2 stereo RCA
      Outputs Stereo XLR, stereo RCA
      Dimensions (w x h x d)
      Width 140 mm
      Height 90 mm
      Depth 295 mm
      Net weight 4.1 kg

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