Old Blood Noise announces Signal Blender Stereo parallel mixer

June 11, 2025 · 3 sources

Old Blood Noise Endeavors lists the Signal Blender Stereo on its site at $329.00¹. The pedal is designed for parallel effects loops rather than pedals in series, and can also work as a one-to-three splitter or three-to-one combiner¹. Delicious Audio reported the upcoming pedal on June 11, 2025, describing it as an upgrade to the company's mixer/splitter². Guitar Pedal X reported the same day that the project began with 29 Pedals wanting a stereo version of the Signal Blender for studio work³.

The pedal has stereo input and output and two stereo effects loops, with an option for mono-to-stereo splitting at the main input, and it can run in mono with TS cables instead of TRS¹. Loop A, Loop B and the clean signal each get a volume knob and a footswitch¹. It also has trails switching for both loops, a phase inversion switch for the return of each loop, MIDI control of the on/off and trails switches, soft touch switching, and an option for true bypass from input to output when all switches are off¹. Guitar Pedal X lists the rear ports as In, Send A, Return A, Send B, Return B, MIDI In, MIDI Thru, Out and 9V DC³.

Old Blood Noise attributes the headroom and phase response to the collaboration with 29 Pedals¹.

Guitar Pedal X's Stefan Karlsson called it "a cool device for sure" but "a little on the large side for me," writing that smaller alternatives suit him better while the Signal Blender Stereo does more than most units currently available³.