The active electronics start with a DSP front end based on Analog Devices chipsets with mastering grade conversion; you can connect analogue balanced XLR sources, unbalanced RCA, and digital sources on AES (XLR), S/PDIF (RCA) and Toslink (optical). Any digital input is mirrored on all digital outputs, so you can connect a stereo Toslink or AES source to the left speaker and that will in turn feed the right hand signal to the left via any of the digital connectivity options. If connecting the two speakers via S/PDIF you can also use them in a master/slave configuration.

To suit your room or personal taste, you can access parametric EQ controls from your computer via USB to tweak EQ settings, and store up to three presets on board. Using the included IR remote control you can also switch between presets, as well as control power, volume, mute, and source selection, and that information will be conveyed on the screen on the OLED display as well as clip indication and any relevant warning messages.

On MUM-6, the DSP feeds into two channels, and on MUM-8 three channels, of Hypex N-Core pure, clean, class-D power, which is modified in house for even lower noise and distortion (with the blessing of Hypex!)