EHX Small Stone Modifications
The EHX Small Stone is a phase shifter pedal. Stompbox Electronics provides services for several Small Stone mods, including but not limited to:
- LED/True Bypass Mod
- Synergy Mod
- Booster Mod
- Depth Mod
If you’re looking for mods on the Small Stone Nano, please click here.
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Baseline Mods
The Baseline Mod consists of two modifications: the LED/True Bypass Mod and the Synergy Mod.
LED/True Bypass Mod
The Electro-Harmonix Small Stone does not come with an indicator light. When you’re performing there’s no time to second guess whether your gear is engaged! Additionally, the bypass arrangement is a partial true bypass.
This modification converts the bypassing to full True Bypass and installs a green 5mm indicator light held in a chrome bezel.
Synergy Mod
The Synergy Mod throws away the positive-tip jack and replaces it with a +9V negative-tip barrel jack found more commonly in today’s pedals.
After this modification you will be able to energize your vintage EHX pedal with a typical BOSS PSA adapter or equivalent, effectively synergizing your Small Stone with the rest of your pedalboard.
Booster Mod
The Small Stone is a modulation effect developed in the early days of effects pedal development. Early modulation effects had a tendency to not compensate for their perceived volume drop.
This modification installs an Op Amp Boost circuit and a Level Control knob that ranges from zero output to about +3dB boost, adding just enough push to match the input volume and compensate for the volume drop.
Depth Mod
Wouldn’t it be nice to have a Depth control on the EHX Small Stone? The Depth Mod adds a knob for Depth Control, but only when Color Mode is engaged. Now you can exploit the full character of the Small Stone with the turn of a knob, rather than from an ON/OFF slide switch.
Common Accessories with EHX Small Stone Mods
Recommended Boost Pedal
If the Booster Mod is not on your radar, or if you’re more interested in a dedicated boost pedal, the Xotic EP Booster is prime choice for a clean boost.
Got Questions? I Got Answers!
Hopefully I covered everything, but if you have any questions on the EHX Small Stone mods above feel free to contact me using this contact form!
Small Stone Mod Demos
Here is an older demo video done by Mimmotronics showing off some of the offered modifications:
