404 Modules

The Moonriver 404 Standard and 404 Reference integrated amplifiers utilize a modular internal arrangement allowing for expansion of different features and technologies as they develop.   404 MM Phono or 404 MM/MC Phono Model 404 comes with two options in the phono stage department; one is MM only and the other is MM/MC selectable. Both follow the exact quality principles that Model 404 is built on. Quality components and massive power supplies are also employed here, to efficiently accommodate very low noise, high performance op-amps.  The gain in the MM/MC phono can be adjusted, simply by changing the dip switches position. The MC input load can be set also, by replacing the original 100 Ohm input resistor with a higher or lower value. No soldering is required. 404 USB DAC The add-on USB DAC module is based on the 9000 series ESS Sabre DAC chip with native DSD support. The USB DAC supports PCM up to 384kHz/24bit and DSD up to 128. The USB input section is separated with discrete, very