Radial MIX 2:1
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Radial Mix2:1

MIX 2:1™ Two Channel Audio Combiner & Mixer

Part No. R800 1036 00

  • Mixes two channels to a single mono output
  • Individual level controls can be bypassed when not in use
  • ¼" TRS and XLR inputs
  • Completely passive, no need for power

The MIX 2:1 is a simple yet highly useful mixer that passively sums two audio channels down to one. This enables you to easily sum the stereo outputs of a console, recording interface, or portable playback device down to mono, or to mix any two signals together and balance their relative input levels.

At the inputs of the MIX 2:1, both ¼" TRS and XLR connectors are available, with ground lift switches to eliminate buzz and hum from ground loops and ensure noise-free operation. Each input can be individually engaged or disengaged, allowing you to audition either signal before summing both together. A trim control is also featured on each input, so if you are connecting two separate mono sources such as the outputs of two mic preamps, they can each be attenuated as needed to match their levels at the output. Both level controls can be completely bypassed, summing inputs 1 and 2 equally, and preventing accidental or unwanted level adjustments. The MIX 2:1 has a 180° flip on Input-2, to help solve issues with frequency cancellation due to the inputs being out of phase. After both signals are passively summed together, they feed a single XLR output that can be connected to a powered speaker, or the input of a console or recording interface.

The MIX 2:1 is built with 14-gauge solid steel, featuring I-beam construction that prevents the circuit board from being torqued which protects against solder joint failure, along with a bookend design that protects the level controls and switches. A military-spec circuit board and high quality components help maintain the integrity of your audio quality, without distortion or phase shift, resulting in completely transparent passive summing.

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MIX 2:1™ - Applications
Summing a stereo aux to a mono input
Engage the level control bypass to sum both channels at unity gain into the mono input of a powered speaker or a recording device.
Mix the output of two mic preamps to a single track
Combine two tracks to a single input on your audio interface. Use the 180° phase flip to ensure phase coherency between the two inputs.
Summing a stereo source to a single channel on a console
When you’re short on channels, the MIX 2:1 allows you to sum a stereo output down to mono, using only one channel on the console.
Mix two dynamic microphones together into a single preamp
The MIX 2:1 works with mic-level signals as well, which is useful when you're low on available input channels, or want to process two mics using the same signal chain.