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Analog Hand Clap Stompbox / Module

The Delptronics Thunderclap is a classic analog hand clap effect based on the famous hand clap sound of the TR-808 and TR-909 drum machines. Our version has extra knobs to tweak the sound from claps to finger snaps to snares to cymbals to thunderous crashes.


The Thunderclap has four knobs: noise level, filter, decay and volume. The knobs can be ajusted to create hundreds of unique percussion sounds. Turn the knobs to approximately 11 o'clock for the classic hand clap. Turn them all the way up for an effect that sounds like getting hit in the face with a metal trash can lid!

The Thunderclap can be manually triggered by pressing stomp/trigger button, or externally triggered by any positive pulse from a synthesizer, sequencer, or drum machine. It makes a great accompanyment to a TR-606 or Delptronics LDB-1.

It also also has a built-in mini-sequencer. Hold down the record button to record a sequence of trigger events (button or external) and the pauses between them (e.g. "clap - - - clap - clap"). Then, whenever it is triggered, it will play back the recorded sequence instead of a single clap. To loop the sequence, hold down the trigger button, then press the record button. A trigger event will stop playback of the loop. Pressing and releasing the record button with no trigger events clears the recorded sequence. The sequence can be up to 32 steps long, and the pauses can total up to two minutes.

The Thunderclap Stompbox comes fully assembled and tested in a heavy-duty aluminum enclosure with awesome graphics (pictured below).

Thunderclap Eurorack Module
Fully assembled and tested module
Thunderclap Stompbox
Fully assembled and tested professional unit
Thunderclap T-shirt


DIY Kit Options

Stompbox Kit includes the circuit board and all parts. It comes with ¼ inch jacks, a big record pushbutton and a stomp style trigger button. It does not include an enclosure, so you can build it into your favorite box, case, container, carton, chest, coffer, crate, or casket.

¼" Module Kit comes with the circuit board and all parts including ¼ inch jacks and two mini pushbuttons. This version of the kit does not include a power connector or panel. If you want to build a 4U or 5U module that uses ¼" or bannana jacks, then this is your best option.

Eurorack Kit comes with the circuit board and all parts including 3.5 mm jacks and two mini pushbuttons. It also inlcudes a Eurorrack power connector and a Eurorack panel (pictured below).


Get a Personalized Kit from Mammoth

Through our partnership with Mammoth Electronics, you can now purchase a personally customizable Thunderclap Stompbox kit. The Mammoth kit includes all the parts in the basic kit, plus a sturdy aluminum stomp box enclosure which can be drilled and powder coated in any of the available colors offered on Mammoth's site. You also get to pick your favorite knobs from more than 20 available styles. Click here to go to the Mammoth website and personalize your Thunderclap Stompbox!


The Thunderclap Stompbox has an antique gold powder coat with black silkscreened printing.
Artwork by Ben DiPietro.
  The Thunderclap Euroroack Module is 6 HP wide.   The Limited Edition black and gold 5 HP panel is sold out.



Video Demos


The Thunderclap sequenced by a Trigger Man with some LDB-1e drums tossed in.


Eight Thunderclaps sequenced by a Trigger Man mounted in a stompbox enclosure.



Thunderclap T-Shirt