Tesla Coil Vintage Treble Boost

$299.00 $229.00


This Batch with NOS VINTAGE Tesla 106NU70 Germanium Transistors

Hand Selected and Labeled

Out of stock

Product Description

Due to major technical issues and overwhelming demand, the build us been extended to 60 pieces. 

There was a MAJOR technical issue with the email yesterday that caused many people to not be able to purchase these pedals. So, we are making another 40 piece run, this time with another rare NOS Tesla Germanium Transistor from the 70’s the 106NU70. We will have to order more cases, so please allow about 2 business weeks for them to be built.   


Latest Update: Batch 2 SOLD OUT.  Batch three, final one…has a build time of 3 weeks.  I put 20 more in stock.  You guys will love this tone.  Thanks and have a super weekend!  Robert Keeley


The Tesla Coil Vintage Treble Booster is a hand made boost pedal perfect for classic tones from the 60’s and 70’s. This Limited Edition of 20 units will not be made again.  These are built with  hand selected NOS Tesla 106NU70 Germanium transistors made in the mid 70’s behind the iron curtain in Bulgaria, each pedal has the unique gain of each transistor hand labeled on the back.

This Neo-Vintage effect must be used with a cranked amp that is breaking up or distorting a bit already.  Cranking the amp and pedal will result in more creamy, beautiful, sustaining distortion with the Tesla Coil.

This product is a Treble Booster by design, not a typical overdrive or distortion pedal. That means, the higher the note played, the more it gets amplified and distorted.  Bass notes remain tight and defined with the Tesla Coil!

Treble Boosters like these have been used for many, many years by the likes of Tony Iommi, Brian May, Rory Gallagher, Eric ClaptonRitchie Blackmore, Dweezil Zappa and  Wolf Hoffmann use Keeley’s Java Boost.

Do you have a dark sounding amp?  Old Marshall or Vox?  This is your ticket to tone-Nirvana.


All Keeley pedals include a one year parts and labor warranty!

For all repairs you must complete the Repair Ticket Form below before you return a pedal for repair. We only repair pedals that have been made or modded by us, or pedals that are going to receive our mod while they are getting repaired.

There may be repair fees for pedals that will be receiving mods or pedals that have malfunctioned from user error like plugging in wrong power supply, running over it with a truck, etc… Thank you for your cooperation!

Go to our Warranty Page to fill out a Repair Ticket Form.

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