Moonriver Audio – 505 Hybrid Phono Stage



Ultra low noise, active, hybrid solid state circuit delivers incredible performance with open, transparent and dynamic sound. The circuit design is established without any compromise in mind: massive 70000uf capacitor bank, dual mono, 6 in total, individual power supplies for each stage, separate input stages for MM and MC, extremely short signal path, triple shielding, extremely low impedance relays and high current, discrete output circuit.



  • Inputs: 4
  • Minimum gain: 34dB
  • Maximum gain: 72 dB
  • Capacitance values: 100, 220, 330, 470, 680pF
  • MC load impedance: 10, 47, 100, 470, 1KΩ and custom
  • MM load impedance: 22K, 47K, 75KΩ
  • De-emphasis curve: RIAA and Decca or Columbia Stereo / Mono function
  • XLR and RCA inputs and outputs
  • Separate shielding for the transformer and gain stages
  • Auto mute function
  • Dimensions (mm): 430 (W) x 390 (D) x 135 (H)
  • Weight: 11 kg