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Used Boss SD-1 with the Dexter Mods TS-9 conversion kit installed

The Boss SD1 is a take on the Ibanez Tubescreamer but has a slightly different circuit components and a different clipping design.

I have been doing SD-1 into 808 mods for years now and was recently asked to add a TS-9 mod to my list of mods so here it is.

You can add options like switchable clipping and higher/less gain switches if you want so feel free to discuss those after the auction closes.

The mod consists of restructuring the clipping section from asymmetrical clipping to symmetrical clipping and replacing the out of spec Boss components with TS-9 spec components.

The stock, and noisier, JRC4558DD op amp has been removed and in it's place an 8 pin socket has been installed. In the socket I've slotted a JRC4558D op amp and the auction includes a 4558P op amp as used on SRV's Tubescreamers.

You can swap op amps to the one you prefer by simply opening the pedal and removing the 4558Dop amp and slotting the 4558P into the socket.

The mod includes a Green LED and a brand new 9 volt battery.

This pedal is used but in great condition, and it sounds great.

The mod is guaranteed. If there are any problems when you receive the pedal simply return to me, I'll service it, send it back and refund your shipping costs.

Questions are welcome but please check the Dexter Mods FAQ here first:

GST invoice available on request.

Check my feedback for this mod:

"totally stoked!!- i have this running in front of my mesa roadking and tightened the bass rite up " set_on_end, Boss SD1 w/808 Mod (auction #192826237)

"Stoked with the purchase, Great Trader, Awesome Mod. A+" mantazmagoracle, Boss SD1 w/808 Mod (auction #183784640)

"Hi Dave, just got the pedal-sounds great in front of my 5150! very happy! speedy delivery,highly recommended a++ trader." bigdogz, Boss SD1 w/808 Mod (auction #186077886)
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Shipping options

  • Anywhere within NZ via NZ Post Bubble Wrapped Env.$6.00
  • NZ Post TracknTrace 1-3 days to Auckland$10.00
  • Track and Trace North Island $12.00
  • Seller does not allow pick-ups
  • Seller location: Whakatane, Bay of Plenty, NZ

Payment options

  • Other options
    NZ bank deposit