The MX61 and MX81 boast six (MX61, pictured) or eight (MX81) channels of whisper-quiet preamplification in a single rackspace with the ability to switch between XLR line-level, XLR mic-level (with or without phantom power) or dual RCA inputs. Both units feature a recessed trim control (+/-15 dB), a dual color signal-present indication LED, and 100Hz and 10kHz shelving EQs on each channel. Users can configure input one as pre- or post-master so that it can serve as an override or emergency paging channel. A single line-level XLR provides master volume controlled output, while dual-mono RCA jacks provide a record output that is unaffected by the EQs or the master volume. A headphone output is internally switchable to be pre- or post-master.
Both the MX61 and MX81 will operate on 110 VAC or on 24 VDC via an external power source. Optional remote VCA, tone generator or muting boards are available.