The Moonriver 404 reference is an elegant fusion of classic styling, simplicity and performance.


Just like the Moonriver's Standard Model 404, the 404 Reference amplifier will extract hidden elements from within any audio format; but with the capability to drive almost any speaker on the market – despite its moderate power. Only the source, speakers and room set the performance limit.


The power supply section has been substantially improved over the standard 404 from 57000uf capacitance to a spectacular 107000uf.  This enormous increment creates better dynamics,  more space between instruments and greater authority in the bass.


With  optional integrated phono stage and USB DAC, (two) preamp outputs and a tape monitor loop, the 404 Reference has great performance and great flexibility!




  • Inputs: 5 (line 1 and 4 optionally occupied by phono stage and USB DAC respectively, 1 x tape loop)
  • Outputs: 2 x preamp out, 1 x rec out
  • Max output power: 50 W / channel into 8 Ω
  • Frequency response: 10 Hz to 50 kHz