harp break pedal


The Harp Break pedal provides clipping distortion with a full range of clean to hard grit. As the LEDs begin to conduct, they produce a soft clipping distortion that is very similar to vacuum tube distortion. The soft clip is visibly evident by the dim lighting of the LED on the face of the pedal, and as the DRIVE is increased the LED clips harder and begins to glow brighter: the brighter the LED, the harder the clip. The tone is very close to vacuum tube distortion but without the overtones produced by tubes. The tone is much better than typical solid state distortion created by transistors, but that is not all. The Harp Break features a 20dB BASS BOOST feature to add a fat bottom end to your tone. This pedal is a great tool to dirty up an otherwise clean amp and create distortion when going into a PA. When the pedal is not used to produce distortion, it can be used to fatten up your tone by the buffered FET input and by the added bass provided through the BASS BOOST. The Harp Break offers all of this and a money-back guarantee if you are not satisfied for any reason.

The settings are very basic. For a clean tone, turn the DRIVE counterclockwise and turn clockwise as you desire more distortion. Increasing the DRIVE also increases volume, so you will need to turn the VOLUME control down to prevent feedback. It is really simple: increase DRIVE and decrease VOLUME or decrease DRIVE and increase VOLUME. The BASS BOOST will provide up to 20dB of increased level in low frequencies that provides a lot of bottom for your tone.

The pedal can be powered with a 9V battery or a DC adapter. The DC adapter requirements are a regulated 9V DC with a minimum 100mA output and a 2.1mm x 5.5mm connector with a negative center. The battery is switched OFF when an external power adapter is used, and the "IN" jack acts as the pedal ON/OFF switch. Lone Wolf offers power adapters for US and EURO customers and is sold separately.

  1. Smooth to hard distortion
  2. DRIVE control to set the amount of distortion
  3. VOLUME control to set the output level of the pedal
  4. BASS BOOST control tuned for harp
  5. LED to display the amount of distortion
  6. True bypass with LED indicator
  7. 9V DC input (barrel with a negative center)
  8. High impedance buffered input
  9. Reverse voltage polarity protection
  10. 10-year warranty on parts and labor
  11. If not satisfied, return within 60 days for a refund of the purchase price minus shipping and 4% credit card transaction fee

Ron Sunshine: video

Brad Capper: demoing the Harp Break

Ian Collard: Compares the Harp Break straight into a PA to the Sonny Jr. guess which half of the clip
is the Harp Break and which half is the Sonny Jr. The answer is at the bottom of the page.*


The following samples were produced by Neil Barnes using an Astatic JT30 crystal mic and a HarpGear HG30:
This sample is with a C harp diatonic and no effects added: Sample 1.
This sample is with a C harp diatonic with heavy distortion and no bass boost added: Sample 2.
This sample is with a C harp diatonic with medium distortion and light bass boost added: Sample 3.
This sample is with an F harp diatonic with medium distortion and heavy bass boost added: Sample 4.




Stephen Schneider field tested the Harp Break and reported the following:
"The Harp Break does a very creditable version of SS dirt; mine compares very favorably with my first-generation Harp Commander, at considerably less cost, and appreciably less complexity. I think there are quite a few harp players who want their amplified sound to be aggressively gnarly, want that cranked-tweed-Princeton sound, and the Harp Break gets that without going over the top, but with some of the typical LW vintage warmth of voicing. I think Randy's rationale for the Harp Break tone knob (bass boost) is on target, with something like the Superlux + the Harp Break, that's a really cheap buy-in if someone really wants to get out there and play amplified in public."

Ron Sunshine tested the Harp Break, made a video for me, and reported the following:
"The Harp Break does wonders for my Bassman re-issue. I had a fantasy that it would turn a vocal mic through a PA into a harp mic, but I haven't been able to make that work for me; nonetheless, I love it. Thanks for giving me a chance to test it. I will use it!"

Guy Holford writes:
"I just bought one of your Harp Break pedals, from Harmonicas Direct in the UK. I had to write to say what a fantastic pedal this is. I had listened to all the online demos but I thought it could be that the tone was the product of other elements in the recording, like vintage mics, tube amps and pro-players. But as soon as I plugged it in I could hear those same tones. Not in a 'golden ears' way, but just simply there. So, thank you!"

Paul Klapper writes:
"Thank you for creating something for harp players that really works! The harp break really makes a difference in my tone. My blues playing friends actually congratulated me on my tone. They were blown away and so am I. I am using it with a blues junior and a Shure Slim X mic. After many years of trying different mics and 5 or 6 different amps, this box has made the biggest improvement.! P.K."

Loss Mesa Swamp Kings: - Brian "Doc" Boggs on harp with the Harp Break

Robson Fernandes: - Brazilian blues harp master.

Wheel: demoing from Ukraine

Ian Collard: using the Harp Break at a jam

*ANSWER TO THE IAN COLLARD VIDEO QUIZ - The first half of the clip is the SJ Cruncher and the second half is the Harp Break.


info sheet     power plug drawing

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The Harp Break is PATENT-PENDING