20-channel Summing Mixer with Vintage Topology
The Heritage Audio MCM-20.4 is a rackmount analog summing mixer that delivers vintage-quality sonics along with sophisticated routing options to streamline your hybrid studio setup. The MCM-20.4 offers 16 input channels arranged into two subgroups of eight. Each channel features concentric pan and level controls plus a balanced insert and a mute switch. Each group has its own stereo fader and balanced insert point. Both stereo subgroups are passively summed into the master bus, which has its own balanced insert point and VU meters. Makeup gain is provided by a transformer-coupled, 1073-style Class A mic preamplifier with four transformers (two per channel). Four channels of pre/post-fader aux sends are provided: AUX 1 and 2 are mono; AUX 3 is stereo. Insert send points are always signal-present, giving them an alternative use as direct outputs for recording. Rear-panel connections are made via DB-25 connectors; except for the master bus, which has dedicated XLRs.
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The best of both worlds
Done up in classic RAF blue-gray livery — complete with concentric pots and Marconi knobs — the Heritage Audio MCM-20.4 gives visual hints as to the sound lurking beneath the bonnet. Flavored by four transformers, that sound is decidedly vintage British, although Heritage has taken pains to improve crosstalk and self-noise specs from those of the vintage designs. The smart-summing topology employed in the company's MCM series mixers delivers impressive headroom and low noise for a 20 channel, vintage-topology mixer. Sweetwater's advice: If you want to smoothly integrate analog gear — and robust, colorful sonics — into your DAW-based workflow, the Heritage Audio MCM-20.4 is a great-sounding, elegant solution.


Heritage Audio MCM-20.4 20-channel, Vintage-topology Rackmount Mixer Features:
- 16 input channels arranged into 2 subgroups of 8
- Each channel features concentric pan and level controls plus a balanced insert and a mute switch
- 2 stereo subgroups are passively summed into the master bus
- Master bus has its own balanced insert point and VU meters
- 4 channels of pre/post-fader aux sends
- Rear-panel connections are made via DB-25 connectors
- Master bus connections via dedicated XLRs