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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
4.2 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Durable toy, keeps them busy
Color: Red
our trainer said our dogs needed cognitive toys and lick toys to help them calm down. I had doubts about this toy. I was pleasantly surprised when it kept them entertained off and on throughout the day. One would take a break and the other would start batting it around and licking at it. I squished some soft treats into the stem section, crunch treats of various size into the top hole (a couple freeze dried chunks of chicken that I know wouldn't come out easily), and mashed some squishy sweet potato treats into the side holes of the top. While it did take a bit of time to prep with all the different types of treats, it really kept them entertained for a long time. They are 40 pounds and decent chewers and haven't bitten off any rubber bits. Very durable.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Favorite toy of all time
Color: Red
I have had my dog for 12 years and this is truly the BEST toy I’ve ever bought her (and I’ve bought probably hundreds). I squish the soft-style treats into the holes and it keeps her occupied for a good chunk of time. She loves it. I usually do it multiple times a day with a few different types of treats. She is an extremely aggressive chewer and has never damaged this toy. Now that she’s older I’m especially appreciate of this toy because it keeps her brain active and gives her something to do when she’s not feeling up to a walk.
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Reviewed in the United States on June 4, 2026
★★★★★ 4
Tough toy but even tougher to get clean!
Color: Red
My puppy is an aggressive chewer and he was only semi-interested in this toy. It hasn't been my favorite, either, due to it being pretty difficult to clean thoroughly. The toy is, however, very durable and its thick rubber has held up to the many bounces on hard floors and tough chew sessions it's been subjected to over the past few months.
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Reviewed in the United States on January 6, 2026
★★★★★ 5
A pup favorite and has held up well!
Color: Yellow
My adult dogs really like this treat feeder and love working to get the goodies out of it! It’s held up well over many months despite their biting and gnawing on it, so a good purchase overall. It’s also different than the usual Kongs so adds some variety to their feeder puzzle repertoire to keep up the diversity of mental stimulation.
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Reviewed in the United States on May 25, 2026
★★★★★ 3
Not tough enough
Color: Red
Finding durable chew toys for my pup is a challenge. When I placed a medium dog biscuit inside this, it kept him busy for awhile. But then I noticed small pieces of the toy around the house and discovered that he had managed to shred it. I've since discarded it and continue to search for toys guaranteed to be safe for "aggressive chewers".
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Reviewed in the United States on February 20, 2026