Our SMC21 stereo-to-mono converter is a must-have for integrators who need to convert stereo (left/right) into two summed mono outputs. While most media devices are stereo, not all spaces are acoustically suited to feeding a left and right channel, and combining the audio signal into two identical summed stereo full-range mono outputs allows a single speaker to reproduce both channels.

The SMC21 features gold-plated RCA input and output connections, and unlike most converters, this unit uses a separate 1:1 audio transformer for each channel to preserve signal integrity. Easy to install with no power required, simply connect the SMC21 between the stereo source outputs and the power amplifier’s left and right inputs. An ideal solution for 70-volt, 8-ohm multichannel projects, integrators often use this converter with our XPA Series 70V power amplifier or our MX Series 8-ohm multichannel amplifiers. This mono converter is also an excellent solution for converting a multichannel system into a PA audio distribution system.