Moonriver Audio 404 Integrated Amplifier
3499,00 € – 4398,00 €Price range: 3499,00 € through 4398,00 €
Moonriver 404 is the outcome of a 3-year research, the aim being 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, as the 404 is by design set to define the faintest nuances of which tone integrity is composed.
Overview
A hefty 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. A laborious selection of components armors the design against tonal alteration, pretentious or not, thus preserving naturalness throughout the shortest feasible path. 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.
We had a very clear vision when we conceived the Moonriver 404 amplifier: Classic design with a modern touch; high quality materials such as massive aluminum knobs, solid walnut cheeks, sturdy enclosure; ergonomic user interface.
There are no “shaved” aesthetics here, no display with complicated serial menus and hidden functions, nor a single multi-function knob for “minimalistic” purposes. The heart of 404 is pure and minimal but the interface is user oriented and easy to operate by anyone in seconds with no need to resort to the user manual. Four knobs and three switches give direct access to any function.
Moonriver 404 amplifier is modular by nature; it can accommodate an MM or MM/MC phono stage and a USB asynchronous DAC. Fitting these modules is simple and can take place at any time, on or after purchase. The USB DAC may also be upgraded with a newer version to meet future needs.

| 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 |
Moonriver Audio is a Swedish boutique hi-fi brand known for a distinctly musical, engaging presentation and carefully voiced analogue-style sound. Moonriver focuses on coherent timing, natural tone and long-term listening pleasure rather than flashy specifications.
The brand is best known for its integrated amplifiers that form the heart of a stereo system, as well as phono stages for vinyl setups where tonal balance and musical flow matter as much as detail.
Hi-Fi Market is an authorised Moonriver dealer in Estonia, supplying genuine products through official channels with manufacturer warranty and local support. We help match Moonriver to your speakers, room and listening preferences, so the system feels balanced and effortless.
Visit our showroom near Tallinn (Tabasalu) to audition selected Moonriver models and discuss real-world system matching before you buy.
Build a Stereo System with Moonriver
Moonriver is most often chosen as the core of a premium stereo system. Start with an integrated amplifier, then refine the system around your speakers and room acoustics for the right blend of dynamics, control and tonal character.
Explore compatible categories for a Moonriver-based system:
If you want a short, well-matched recommendation, contact us — we’ll suggest a sensible Moonriver-based setup tailored to your room and budget.
FREE DELIVERY ACROSS ESTONIA (For orders over €100)
Shipments within Estonia generally arrive at the destination specified by the buyer within 3-5 business days from the entry into force of the sales contract. The contract enters into force from the moment the amount due is received into the online store's bank account.
If you wish, you can also pick up the goods yourself. The address of the salon is Kallaste 7, Tabasalu.
WE DELIVER TO ALL COUNTRIES OF THE EUROPEAN UNION.
Please fill in all fields at the checkout and we will contact you regarding shipping costs. Please make payment only after confirming the shipping costs.
OWNER OF THE ONLINE STORE
The owner of the online store hifimarket.ee is Audio Sommelier OÜ (registration number 16891515), address Kallaste, 7, Tabasalu Keskus, Estonia 76901






