Old Blood Noise Endeavors Utility 4 Signal Blender

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From OBNE: 

Signal Blender is a parallel routing solution focused on blending sounds side by side rather than running them into each other. With two send/returns and independent switching over each send/return and the main clean signal, Signal Blender can be used as a parallel effect blender, 3-to-1 mixer, 1-to-3 splitter, active ABY, volume level setter, and more.

Controls include:

Soft-touch bypass footswitches for minimal switch noise