Keeley Bubble Tron Flanger Phaser Pedal

Keeley Bubble Tron Flanger Phaser Pedal

Keeley Bubble Tron - a Neo-Vintage, Dynamic Flanger, Phaser and Random Synth Filter Pedal Any die-hard fans of Frank Zappa will tell you that being able to recreate some of his most iconic guitar play...
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Availability: IN STOCK

Order before 3pm Mon-Fri for Next Day Delivery

Keeley Bubble Tron - a Neo-Vintage, Dynamic Flanger, Phaser and Random Synth Filter Pedal

Any die-hard fans of Frank Zappa will tell you that being able to recreate some of his most iconic guitar playing moments is, regardless of technical skill, nigh on impossible without the aid of effects units which are incredibly hard to find these days.

3 Incredible Modulation Effects in 1 Box!

Thankfully, Robert Keeley and his team of geniuses over at Keeley Electronics have developed the BubbleTron - a boutique combination of Phaser, Random Synth filter, and Dynamic Flange (inspiread heavily by the MixMic DynaFlanger, as used extensively by Frank Zappa).

Versatile, and Easy to Use

Featuring an intuitive set of controls alongside three unique modes of operation, the BubbleTron manages to help capture some of Zappa's most iconic guitar solos, especially when using the dynamic flanger mode.

Dynamic Flanger

Inspired, as stated earlier, by the phenomenal MicMix DynaFlanger, this effect starts and stops based on your pick attack or envelope, rather than (as with more conventional Flangers) running continuously. This flanger mode also offers you the choise between Positive and Negative feedback, thanks to the FDBK control, opening up a whole new world of sound options for you, and the Sensitivity control lets you choose just how delicately you need to play for the effect to start.

DynaMo Phase

This circuit is actually two different phasers, one of which has a user-definable LFO, and the other of which is a true Dynamic Phaser (as with the Flanger, this starts and stops based on your pick attack). Either run both phasers simultaneously, or simply turn the Rate Control off and run the Dynamic Phaser on its own!

Synth Filter

This is the only non-dynamic effect mode in this pedal, but that doesn't affect its usability in any way. Make full use of the Shape control to determine the different ramps or random nature of the pedal, or even adjust the Sensitivity Control for an array of vintage synth and keyboard style sounds.

Superior Construction

The beating heart of the Keeley Bubble Tron is comprised of a hand-built board, and is crafted using decades worth of pedal-building expertise, with attention to detail and tone being at the forefront of every point.

Order Yours Today

Place your order at PMT Online and choose from our fantastic range of Home Delivery options. If you'd like to query the availability of this pedal, be sure to contact our Online Sales Team directly - they're always happy to help.


  • A Dynamic Flanger Phaser and Random Synth Filter with three modes of operation
  • Inspired by the incredible MicMix DynaFlanger, as used by none other than Frank Zappa
  • Internal DIP switches (under back plate) allow you to change between Bank 1 or 2 of sounds, and Vintage or Modern
  • Responds to the severity of your pick attack
  • Hand made in the USA
  • Dimensions (Inches): 3.25 x 6.75 x 4.375
  • Weight (Packaged): 1lbs
  • Free home delivery available
More Information
Manufacturer Keeley
SKU 300115
Shipping Weight (kg) 1.000000
Effects Phase, Flange
Warranty 2 years


We know you want to get your gear as quickly and as safely as possible, Next Working Day Delivery to UK Mainland Addresses, on all IN STOCK items, if ordered before 3pm. This will include a text or email on the day of delivery giving you an exact hour window of when your gear will be with you.

Orders under £99: £4.99 Delivery Charge at Checkout


Orders over £99: Free Next Day Delivery


Weekend Delivery (Saturday-Sunday): £9.99 (When Ordered before 3pm Friday)






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