The Moonriver 404 Reference Integrated Amplifier is the flagship evolution of the acclaimed Moonriver 404 platform, delivering enhanced dynamics, greater control, and increased resolution while retaining the musical character of the original design.
Built around a fully discrete analogue architecture, the 404 Reference combines a high-current power amplifier, sophisticated preamplifier stage, integrated phono capability, and modular upgrade options. Designed for demanding audiophiles, it offers exceptional transparency, drive, and refinement while accommodating both analogue and digital source components.
| Product Type | Integrated Amplifier |
|---|---|
| Included Module | MM/MC Phono Board |
| Power Supply Capacitance | 107,000µF total, 21,000µF reserved for preamplifier section |
| Architecture | Fully discrete analogue design |
| Power Supply Design | Five separate power supplies with overload protection |
| Amplifier Configuration | Dual mono power amplifier configuration |
| Transformer | Separate transformer windings for toroidal transformer sections |
| Volume Control | ALPS Blue potentiometer |
| Signal Switching | Relay-switched signal paths |
| Speaker Terminals | WBT nextgen™ speaker terminals |
| Soft Start Circuit | 30A relay-based soft-start protection |
| Preamplifier Outputs | Two preamp outputs |
| USB DAC | Included |
| Tape Monitor Loop | Included |
| Modular Upgrade Capability | MM or MM/MC phono stage, USB asynchronous DAC |
| Balance Control | Adjustable balance control |
| Construction | Through-hole component design, Mechanical resonance damping chassis |
