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Simmons Clap Trap

“This is a classic bit of kit. It’s still one of the best hand clap synths ever made. It combines gritty 8-bit sampled claps with typical Simmons filtered noise to create a huge range of clap and percussion sounds.

This unit has just been upgraded with a second digital eprom featuring the Linn LM-1 Drum Machine HiHat. Both the Clap Trap and The HiHat from the original Linn LM-1 (not the later LinnDrum which is different) share very similar playback circuitry, where the samples are looped continuously and the sample start point varies from trigger to trigger, which gives a very natural variation to the sounds (unlike the usual machine-gun effect). This was a unique feature of the LM-1 and I don’t know of any other classic drum machine that used this method of sample playback. On the LM-1 this was the way it was designed and was always active, but on the Clap Trap it can be switched on and off using the ‘Humaniser’ switch, so you can choose to use it or not. This, coupled with the Simmons filtered noise adds a lot of sonic possibilities to the Linn HiHat sound.

The Linn HiHat data was copied directly from an original LM-1 eprom chip and converted to the Simmons eprom format, so it is as close to the original sound as possible.

Other work done to this unit includes all new control potentiometers installed (and new control knobs to go with them). Also a new proper power switch has been fitted on the side, with a smaller selection switch for the eprom sounds behind it.” Click here to visit listing on eBay

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Simmons SDSV

“Fully Functional. Tested trigger inputs with Roland tr606 and everything sounded as it should. Cannot confirm or deny but rumored to have been used by Prince. I left the pencil markings on front of face plate due to this (may be from him) although they could easily be rubbed off. Check the picture of the label from studio it was used by, allegedly rented to Prince for sessions. ” Click here to visit listing on eBay

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Simmons SDSV with Elby MIDI

“This one is in excellent cosmetic condition and working 100%. It has just been serviced with some restoration. As the title says, this one has Elby midi. ” Click here to visit listing on eBay

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Simmons Clap Trap

“Rare Vintage Simmons Clap Trap! FREE SHIPPING! The classic Simmons Clap Trap is a digital 8-bit EPROM-based (hand clap sample) with an analog noise and modulation sections used for generating synthesized clap sounds. The Clap Trap can be triggered a number of ways using it’s external ¼ inch trigger inputs or manually via buttons on the top of the unit. There is also an Automatic repeat trigger mode that triggers the Clap Trap synth with a user selectable retriggering rate. The “Auto” mode is extremely useful when designing a synthesized clap sound with the front panel controls. Another unique feature on the Clap Trap is a Humanizer button that adds subtle variations to the clap sample speed and duration giving the clap synth a more human feel when triggered.

This unit has been tested and works and sounds great! I’m the original owner and purchased it directly from one of the first Simmons sales reps, Reek Havoc, way back in the 1980’s when it first came out. ” Click here to visit listing on eBay

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Simmons SDS8

“Up for auction is a Simmons SDS8 analog drum set. The sounds are unbelievable!! All knobs work but some are a little scratchy. All pads trigger well as does the bass drum. It’s in overall very good shape. The set weighs a little over 50 pounds so shipping will be corresponding.” Click here to visit listing on eBay

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Simmons Clap Trap

“This is the first iteration of the Simmons Clap Trap after Dave Simmons left MusicAid to form Simmons Drums. These were produced from 1981 to 1984 when the company replaced this model with the digital version.

It’s fully working, and has been gone through. Sometimes when you turn off the Auto Trigger by hitting the Manual Trigger button the unit won’t flip back to Auto Trigger. But, you can just power off and back on and it will start in Auto Trigger mode.

Cosmetically, it’s in very good shape for its age with only a few light scuffs (see photos). Also, the Master Volume slider top is broken off, but it functions perfectly. ”
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Simmons SDS7 Project Machine

“Simmons SDS7 Digital Analog Drum Synthesizer Vintage Made in England

Bruford Snare among other rom sounds

Untested and never plugged in”
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Simmons Clap Trap

“This is the Original Simmons version holy grail of the clap trap right after Simmons officially started branding them from Musicaid. Tested and working… These claps cut through any mix… unbelievable… There are very minor nicks due to age.. The volume knob is missing but still functional… This is the 240V version…”
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Simmons Clap Trap

“Excellent condition, work great, original instructions included, original box, seen limited use, made in England, only missing (2) knobs caps (check 2nd picture)”
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Simmons MTX9 Drum Expander

“Quite rare vintage Simmons MTX 9 drum sound module with MIDI.
Tested , all channels works fine.Sound can be triggered from triggers or MIDI.
The power is 220 volt ,you need a converter 110/220 volt if you live in US/Canada or Japan.” Click here to search for synths on eBay

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Simmons SDS EPB

” Simmons SDS EPB – Digital Sampler + E-Prom Blower w/ 17 Eproms and Eraser
In Great Working Condition!” Click here to search for synths on eBay

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Simmons SDS8

“Simmons Sds 8, has some scratchy pots but is fully functioning and in over all good condition with some scratches and nicks”
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Simmons Clap Trap


SIMMONS CLAP TRAP “RARE VINTAGE” Mint Condition.

This machine needs no introduction. Everyone who knows “clap machine” knows that the “Famous Clap Trap by Simmons is the best clap trap ever built. You can trigger it, play it, trigger it from a microphone, use it in the studio and more.

I used it on my snare using a microphone on my acoustic set. People would ask me after a gig all the time, “man what is that you’re using on your snare drum, it’s slammin, I told them it was the Simmons claptrap and they would reply, “that is the fattest clap I’ve ever heard. You will be amazed. This is a hard to find…!!!!! Hate to let it go… but I Gotta. It is very clean no scratches all knobs and buttons in tact works great!!!!” Click here to search for synths on eBay