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Robert Keeley and his crew are fans of Zappa. Rabid Fans. This pedal explores some of the famous, but very hard to find sounds of the past. Keeley Engineering has created another batch of Neo-Vintage effects that never were. This time Keeley has made the Flanger and Phaser in dynamic with your pick attack and strength. Then add the Random Stepped Filter with the new “M-Style Synth” bandpass shaping feature, and you have a lead guitarist’s dream tool. Shut up and play your effect pedal! Yeah, you play this thing like an extension of your mind and fingers.
The Keeley Bubble Tron Dynamic Flanger Phaser and Random Synth Filter has three modes of operation.
The Flanger section of the pedal draws on inspiration from the MicMix DynaFlanger. This incredible piece of gear was used by FZ to create many of the sounds in the late 70s to mid 80s where a dynamic flanger was used to get envelope based flanging in his solos. A dynamic flanger is one that starts and stops based on your pick attack or envelope. The word envelope is used because if you were to measure the “weight” of your guitar signal and put it in a storage container (the “envelope” is an imaginary capacitor) it can then be used to control another part of the circuit. The Bubble Tron uses your playing to start and stop the flanger. Most flangers just cycle around and around and you can hear that swooshing in the background. Not in this case, it only cycles as you play. Many flangers offer only positive or negative feedback. This one allows you to try either with the FDBK Control. The negative feedback sounds more vocal like and hollow to my ears while the positive feedback is more conventional and has a thicker, smoother sound. The Sensitivity Control allows you to set how delicately you want to play and have the flanger go fully crazy on you. You can set for crazy silverback gorilla flange or easy flangin’ on Sunday morning. The Depth Control is just that, how deep you want the flanging to be.
The DynaMoPhase section of the Bubble Tron is actually two phasers. One has an LFO that you set the speed of with the Rate Control (while it’s depth is dynamically controlled) and the other is a true Dynamic Phaser. It starts and stops based on your pick attack. Again, you can set the Depth and and Sensitivity of this phaser to give you a very watery sound that is all based on your guitar’s signal. You can turn off the standard phaser and just run it DynaPhase by turning the Rate Control off.
Paul Priest plays us some Torture: Torture Jam
Paul plays some more guitar Headlessly: Headless Guitarist
The only effect that isn’t dynamic is the Filter Section of the Bubble Tron Dynamic Flanger Phaser. With the Filter you can control the different ramps or random nature of the pedal with the Shape Control. The very exciting part of this pedal is the Sensitivity Control which is actual like a vintage synth style bandpass filter control. It shapes the bandpass filter on the filter and gives you some incredible keyboard like sounds.
Listen here. Filter by Paul Priest.
One very nice side effect of dynamic based effects is that they don’t produce the constant, swooshing sound of LFO based effects.
If you’re a lead guitar player that likes to explore and has never had the kind of expression or dynamics from your sound effects that you have in your mind, this is for you. If you are a sound-experimentalist, this is for you! The sounds are nearly endless in that your input shapes what the effect will do.
The Bubble Tron Dynamic Flanger Phaser is made in Edmond, Oklahoma by rabid Zappa fans. It was Designed and Engineered by Aaron Tackett, Craighton Hale and Robert Keeley.
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Last Updated: October 04, 2022
If you are not 100% satisfied with your purchase, you can return it within 45 days of the original purchase date for a store credit refund, or within 14 days of the original purchase date for a refund to the original purchase method (PayPal, credit card, etc). If an item is not received by us within the 45-day window, the package will be refused. All new items returned must be in BRAND NEW condition with zero signs of wear or use and must be returned in the original packaging with ALL materials (free/bundled items -- must be unused/unopened, warranty cards, plastic, pouches, manuals etc.).
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If a product is defective upon arrival, or the wrong item was received, all the shipping fees will be covered by us and we will send you a replacement once the original item is received. If for any reason a replacement wont be available for a significant amount of time, we will issue you a store credit to use on another item. For defective items, Prymaxe reserves the right to refuse the return if we determine the reason for the unit failing was not covered under the warranty (i.e., if the item was damaged due to user fault or error). If you feel your item was damaged in shipping, please take plenty of pictures of the damaged box and item and immediately contact us so we can open a claim with the shipping company.
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Unique pedal. Got me to the Zappa sound I've been chasing for years.
The dopest of the dope.
The Keeley Bubble Tron not only has an Envelope Filter, Phaser and Flanger all in one small pedal but there are two Banks and a Vintage and Modern mode increasing the versatility. I found many usable sounds in all modes. In Bank A the Filter is a Random Filter while the Phaser and Flanger respond to your picking attack while in Bank B the three sounds are a little more traditional and there is also the flexibility of having a warmer vintage sound or a more modern sound with a fuller frequency range. About the only minor drawback I found with this pedal was that to access the Bank and Vintage\\Modern sounds you had to take off the bottom plate and then move very small dip switches on the circuit board. Other than that a fantastic pedal!