The original EX-M1 was introduced in 2017. The newly updated EX-M1 — without the
“+” — costs $2398 and includes, among other things, changes in the
power supply, capacitance, and the volume control, the latter now using a
MUSES72320 controller instead of the previous relay-based control. The
EX-M1+ is essentially identical to the upgraded EX-M1, but adds a
preamp-stage output and a home-theater bypass to entirely bypass the
preamp stage.
This seems pretty clear to me the latest version of the EX-M1 has those updates to the power supply capacitance and volume control. The + version has those updates but also adds a preamp out and a home theater bypass. The preamp out allows you to use an outboard amp and the bypass allows you to run an AVR or something to control multiple speakers in a HT setup.
This seems pretty clear to me the latest version of the EX-M1 has those updates to the power supply capacitance and volume control. The + version has those updates but also adds a preamp out and a home theater bypass. The preamp out allows you to use an outboard amp and the bypass allows you to run an AVR or something to control multiple speakers in a HT setup.