Moonriver Amplifiers

Designed and hand assembled in Sweden, every Moonriver amplifer delivers a no-compromise audiophile sound.

Moonriver amplifiers love vinyl records, analog tapes, compact discs and digital streams alike and feature upgradable modules for all those formats. Moonriver aim to employ every technology available today, without staying exclusive to one design principle be it solid state, integrated circuit or vacuum tube.

Worthy of audition we think!

Model 404 Reference Integrated Amplifier


Following the runaway success of The Moonriver Model 404 below, Moonriver decided to move a step further by improving on the already excellent design platform. The Moonriver Model 404 Reference achieves even better performance over the Standard Model, while retaining a sensible price point.

Just like the Standard Model 404, the 404 Reference amplifier will extract hidden elements, and render textures from within any audio format.

Model 404 Reference has the capability to drive any speaker on the market – despite its moderate power.

Only the source, speakers and room will set the performance limit and it's culture will suit all music, Model 404 is by design, set to define the faintest nuances of which tonal integrity is composed.

The 404 Reference lifts the capacitance to a spectacular 107000uf of which 21000 of them are reserved for the preamp only.  This enormous increment expands the driving behaviour, dynamic character, detai, low level information with a deeper and more articulate soundtstage - the space between instruments is vast, while the bass has greater authority and is more confident than the Standard Model 404.

The texture of each individual instrument is exposed exponentially in comparison with the Standard version thanks in part to the fully discrete preamp section while a high output stage that is custom-optimised for bandwidth and distortion, gives neutral character and transient fidelity.

All signal paths have been kept as short as possible.

Furthermore, an integrated phono stage, USB DAC, (two) preamp outputs and a tape monitor loop expand functionality to form an ideally flexible integrated amplifier.

Moonriver_404_Reference
Moonriver_404_Reference_rear

Connectivity for todays audio requirements


  • Optional MM/MC Phono Stage
  • Optional USB DAC coming soon
  • 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
  • Total harmonic distortion: 0.05%
  • Signal to noise ratio: 85 dB (line)
  • Idle Consumption: 22 Watts
  • Dimensions (mm): 430 (W) x 390 (D) x 135 (H)
  • Weight: 13 kg

 

 

moon river 404 front

Model 404 Integrated Amplifier


Moonriver Model 404 is the outcome of a 3-year research project who's aim was to achieve incredible performance regardless of price range.

The 404 amplifier will extract hidden elements and render textures from within any audio format, with the source, speakers and room to set the limits.

Its culture will suit all music types, as the Model 404 is by design set to define the tiniest details of which tone integrity is composed.

A hefty power supply section ensures that ample healthy power is available at all times at all stages through separate rails. A fully discrete preamp section serves for acute dynamic awareness, while a high output stage that is custom-optimized for bandwidth and distortion warrants for neutral predisposition and transient fidelity or to put it another way - great sound!

Carefully selected components ensure against tonal alteration thus preserving a natural, musical sound.

All signal paths are kept as short as possible.

Furthermore, an integrated phono stage, a USB DAC, two preamp outputs and a tape monitor loop expand functionality to form an ideally flexible integrated amplifier.

Connectivity for todays audio requirements


  • Optional MM/MC Phono Stage
  • Optional USB DAC coming soon
  • 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 per channel into 8 Ω
  • Frequency response: 10 Hz to 50 kHz
  • Total harmonic distortion: 0.05%
  • Signal to noise ratio: 85 dB (line)
  • Idle Consumption: 22 Watts
  • Dimensions (mm): 430 (W) x 390 (D) x 135 (H)
  • Weight: 12 kg
404 rear