Psionic Audio - offering the Triad, the new Telos, the 3.14, and other high quality audio effects and custom audio solutions. Lyle Caldwell psionicaudio pisonic psyonic syonic sonic Triad 3.14 314 Z2 Lumos Fuzzy Logic fuzzylogic jmi vox ac30 ac30cc mod amp amplifier modification modifications mods mixers mixer electric guitar pedals pedal stomp box stompbox stompboxes effects effect distortion fuzz overdrive natural boost booster clean cleanboost remote volume control second master volume vintage big muff best korg sdd-3000 sdd3000 delay preamp preamplifier rack switch switcher switchers switching professional unbuffer unbuffers buffer buffers boutique

Triad Preamp

The Triad features a preamp derived from the classic Korg SDD-3000. This was a rack delay from the mid '80s that accidentally sounded fantastic for guitar, even when used as a preamp with the delay bypassed.

The Korg unit is now hard to find, expensive, and requires a lot of maintenance. In addition, it is noisy, has a less than optimal input impedance for use with guitar, and has preset "boost" levels which are fairly drastic.

The Triad is an updated and expanded version of the SDD preamp sound, keeping what's great about it but reducing the noise floor, keeping a consistent proper input impedance for guitar, and offering a wide range of gain levels, including a footswitchable adjustable boost for much more tonal and performance flexibility than the old Korg units, or any other straight copy of the Korg circuit.

Choose more features from the menu on the right to see why the Triad remains the best choice for the classic SDD preamp sound.


All brand names, amp names, guitar names, etc, that are not Psionic Audio products are of course the rightful property etc of their respective owners. Used humbly with the realization that we live in the real world and people use these products, despite the best efforts of various legal departments.