KMA Audio Machines Geminus Double Tracker

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Effect Pedal for Electric Guitar

True Stereo Double Tracker
Adds richness and breadth to the sound, similar to a riff played twice
True bypass
Controls: TDT Width, Time, Level
Switch: Pitch, Mode
Footswitch: Effect bypass
Input and output: 6.3 mm TRS jack
Current consumption: 100 mA
Power supply via 9 V DC mains adapter (2.1 x 5.5 mm barrel connector, centre negative) - suitable mains adapter available under Art. 409939 (not included in the scope of delivery)
Dimensions (W x D x H): 74 x 110 x 60 mm
Weight: 350 g
Handmade in Germany

Note: Battery operation is not supported

30-Day Money-Back Guarantee

3-Year Thomann Warranty

Available since May 2025
Item number 616863
Sales Unit 1 piece(s)
Effect Types Doubler

B-Stock available from £187

£203

All prices incl. VAT

118

Sales Rank

in Miscellaneous Guitar Effects

Bundles & offers

KMA Audio Machines Geminus Double Tracker B-Stock
May have slight traces of use

£187

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6 Customer ratings

5 4 Customers 4 1 Customer 3 0 Customers 2 0 Customers 1 1 Customer

4.2 / 5

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6 Reviews

Overall a great doubler which has become my "instant gratification pedal"

Djibi-FI 03.02.2026

I've been using the pedal for a few weeks now and I have been really happy with it as I find the doubling and stereo width convincing and pleasant.
What I really like:
- Good tracking and stable doubling (the sound doesn't jump in the stereo space).
- Can give a very wide stereo effect and the time knob is effective for tightening or loosening the effect without having to go to the extreme.
- The build quality appears to be good.
- Rather transparent and respectful of the tone.
What I like less:
- No USB. If KMA were to refine their algorithm, the pedal couldn't be updated.
- The artwork: KMA has many pedals with very nice artwork but the Geminus looks a bit more "plain" to my eyes. Something like the Endgame would have been so nice!
- The tiny knobs: I'm not very fond of mini knobs and would have preferred standard size ones which I find easier to manipulate.
In conclusion, I think that the Geminus is one of the best doubler currently available.

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Excellent doubler

Eoin jennings 06.06.2025

Bought this as alternative to the Mimiq which I have and rate. The addition of the Modulation mode looked interesting and for me is the key advantage over the Mimiq as it adds a sound for 80s metal that is hard to get other ways. It does rely upon TRS cable which means I had to get an old blood noise endeavours split meld to fit into my rig and an extra TRS patch cable. Also find for some reason when I turn on power it doesn’t seem to power up automatically and have to remove and insert the power cable again - have tried a few cables and power supplies so not sure why

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m4recinko 28.02.2026

I watched all the videos of geminus and endgame and I was excited about how amazing the KMA doubler sounds, I thought I would like something like that when practicing with headphones, I was really looking forward to it but after trying it out my joy faded, I simply can't hear the difference between geminus off and stereo to stereo or mono to stereo mode, geminus off vs mono to mono mode I can hear the difference but it's not pleasant to listen to at all, I tried it on flat headphones and also on my stereo pedalboard with 2 x 12 cabs. I would really like to keep it if geminus really behaved like in the youtube videos but I have now come to the opinion that these are reviews with post-processed sound. I am returning the pedal but I secretly hope that I just came across a bad piece and that I will still have the opportunity to try the good one.

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Auch für Akustik-Gitarre

Bluesbirdmick 14.07.2025

Das Gerät ist ohne Einschränkung sehr gut verarbeitet. Es kommt zudem recht nett verpackt daher (im Stoffbeutel im Karton). Das mag unwesentlich sein, macht aber einen guten Eindruck! Ich lass es im Mono-Betrieb laufen über einen Amp, von dem zur PA .... Je nachdem wie das Geminus eingestellt ist, "doppelt" das Teil akkurat den Sound. Für Fingerstylisten ist es weniger geeignet, eher für geschrammelte Chords, die dem Gitarristen einen zusätzlichen Player zur Seite stellen. Für mich absolut passend.

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KMA Audio Machines Geminus Double Tracker

Effect Pedal for Electric Guitar

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