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Description
signal blender pedal GFI System Duophony – Motor City GuitarGFI System Duophony Advanced Parallel Signal Blender Pedal About the Product Parallel Blender: A pedal that blends the signals from 2 or more sources. Duophony is their take on the lowly 'parallel blender' pedal. They took the basic concept of blending two effects together to the next level by integrating the classic signal blender functionalities with modern features and intuitive user interface. The result is a solid blending machine, optimized to
GFI System Duophony Advanced Parallel Signal Blender PedalAbout the Product
Parallel Blender: A pedal that blends the signals from 2 or more sources.
Duophony is their take on the lowly 'parallel blender' pedal. They took the basic concept of blending two effects together to the next level by integrating the classic signal blender functionalities with modern features and intuitive user interface. The result is a solid blending machine, optimized to help you unleash the unexplored ideas of parallel blending and discover new ways of sculpting limitless soundscape!
Full stereo signal paths
Duophony features full stereo signal paths throughout. TRS jacks supports both mono and stereo connections for the inputs and effect loops, while dedicated Left and Right TS jacks are provided for the outputs.
Hassle-free blending with presets
16 presets, readily accessible via the two on-board footswitches, external aux-switches, and MIDI.
Expressive Flexibility
Adjust blending ratio or the Dry signal level at will with an expression pedal!
Fully configurable Heel and Toe values for flexible expressive control. Expression pedals with 10 KOhm pot value are supported.
Modulated Blending
A unique feature that Duophony has is “Modulated Blending”, the ability to modulate the blending action with an internal LFO. When modulation is activated, an internal LFO will produce a waveform whose shape maps directly to the blend ratio. Modulation speed can be controlled via expression pedal, tap-tempo, or MIDI clock.
Comprehensive external control
• Expression Pedal - with adjustable heel and toe values.
• Aux Switches - accepts up to 3 external switches for versatile control (tap-tempo, bank up/down, etc).
• MIDI In - nearly all features and functionalities of the pedal are opened to MIDI access, including MIDI clock.
Purity and Precision
100% analog signal paths, coupled with high headroom and low-noise design preserve your signals and tone.
Precise digital control provides seamless user interface and ease of use.
Features:
• Input impedances: 1M Ohm.
• Output impedances: 500 Ohm.
• Current draw: 150 mA.
• Input / Sends / Returns jacks: 1/4 inch TRS.
• Output jacks: 1/4 inch TS.
• Expression / Aux input jack: 1/4 inch TRS.
• MIDI Input connector: 1/8 inch TRS.
• USB connector: Type C
• Dimension: 9.7 x 12 cm (3.8 x 4.7 inch)
• Power requirement: 9VDC / 150mA, negative-center plug (Power supply is not included).
• True stereo on all (inputs, outputs, & FX loops) signal paths.
• Parallel or Series routing modes.
• 3 parallel blend modes: XY mix, Y plus [X], and X plus [Y].
• 16 Presets.
• Fully adjustable dry signal level.
• Phase invert function on loop X.
• Individual gain control for each loop.
• Bypass function with or without trails.
• Expression pedal and Aux switches control input.
• MIDI input.
• Full-featured modulation engine.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 3
Not great at cooling
Size: Queen (2 Count), Color: Original White (Cooling)
Each pillow cover has 2 sides, one marked for cooling, and the other a different fabric. The cooling side is about the same effectiveness as having a silk or satin pillow cover. It's only cool when you first touch it. The cooling side doesn't seem to absorb or wick moisture, so if you are sweaty - it keeps the moisture in place. You'll definitely want a regular pillow case over the pillow cover. In fact, if you suffer from night sweats, the non-cooling side is actually more comfortable. The pillow fill is ample, and simple to squish around for more support for your neck, etc. Think bean bag. But it will retain your impression after use. I find I need to do as I did when I had down pillows - give it a few good shakes in the morning when I make the bed to get it evened out for the coming night. In all, it is a well-made and comfortable pillow to sleep on, but it does not excel in cooling.
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Reviewed in the United States on May 29, 2026
★★★★★ 5
excellent pillows i bought two sets!!
Size: Firm Queen (2 Count), Color: Original White (Cooling)
I ordered these for my son who has neck issues and has gone through so many pillows trying to find one that he liked. They’re heavy, so i was worried that they might be “too” heavy to be able to sleep on comfortably, so I ordered a second set, one firmer than the other (just in case) and gave him a set for Xmas and he loved the first set so much without even trying the less firm ones.He also needs the cooling factor and these offered that, too. They are filled with pieces of memory foam (tons of it) and each pillow can be modified by removing some of the foam. The covers are beautiful, high quality fabric with a zipper so ts easy to remove or replace the foam pieces. The size is perfect and they keep their shape. I kept the second set i ordered rather than returning them and i love the pillows. I actually modified two by removing some of the foam pieces. I kept the foam pieces in a zippered pillow protector and i can always adjust mine when or if i need to.
1000% love these.
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Reviewed in the United States on March 22, 2026
★★★★★ 5
The Perfect Firm Pillow l
Size: Queen (1 Count), Color: Original White (Cooling)
It is everything it claims to be, cool, comfortable and strong. I got this for my husband first, he loves it and then got one for my son, he uses it to support his knees and has been sleeping much better since then.
They both needed a firm pillow that is not super soft, firm but not achy.
Finally found the perfect one.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Comodidad total durante el embarazo
Esta almohada en forma de U ha sido una de las mejores compras de mi embarazo. Brinda soporte completo a la espalda, la pancita y las piernas, ayudándome a encontrar una postura cómoda para dormir. Es muy suave, no se aplasta y se adapta perfectamente al cuerpo. Desde que la uso descanso mucho mejor y me despierto sin dolores. Además, la funda es agradable al tacto y fácil de lavar. La recomiendo totalmente a futuras mamás que buscan dormir mejor y sentirse más cómodas. 💕
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Reviewed in the United States on January 8, 2026
★★★★★ 5
Comfortable accessory
This U-shaped pillow is made with a soft exterior material. The overall shape and flexibility allows for comfort in a number of different positions. I was expecting a pillow that was slightly more firm, however, it suits the intended purpose.
The cover is removable and machine washable.
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Reviewed in the United States on April 9, 2026