Signal Theory

06/04/2026

Dropping today - the Z-B4! This is an exquisite representation of a non-top boost AC30. Made in collaboration with Brad Paisley, the DB4 gives you a RIPPIN AC30 that gains up well and gives you that beautiful chime you’ve come to love from an AC30 but without the brittleness.

Push this thing to the limit, it can handle it! We’ve had a lot of fun with this one. If you are a tele fan, you’re going to love running this thing. Check it out on the Signal Theory Youtube channel and grab it on the site.

Links in comments!

06/02/2026

05/29/2026

Merch is almost ready! We did not realize the backend work we’d need to do to get this stuff ready but we are SO close. Which one are you coppin? Swipe to see em all 👉🏼

Designs by l
Photos by of .photoco
Goofy model

05/23/2026

Get yourself locked-in with some new tones 😎 use code MEM30 to save 30% off at SignalTheoryAudio.com! Ends Monday at 11:59PM CT!

05/21/2026

Let the waves wash over you…

Calling this one ‘Memory Fade’. Ever try to think back on something from your childhood - a memory of a time you know you loved, but it’s just fuzzy… I tried to make something that sounds like that.

*Gear Details*

Guitar: DGT Semi-Hollow Ltd.
Amp/FX: Stadium

Using captures of our 1962 Fender Bandmaster (62 B-Master pack) from Signal Theory Audio

05/20/2026

Little behind the scenes on our next capture/preset pack. Dr. Z DB4

DB = Doc and Brad (Paisley)
4 = Their 4th amp collab

This one is inspired by an early 60s non top boost AC30. Chime, but also warmer and thicker than a top boost AC30. It’s goooood.

05/18/2026

Gonna be checking out both of these pre-amps from ! The Royalist is your JTM45 kinda sound. The Imperial is your Deluxe Reverb kinda thing with a lead channel in a Tweed kinda vein (says the manual 🤷🏻‍♂️). Which would you choose?

Running my wet effects in the effects loop to get stereo delay and verb. Loving this Konstante from .adw. Thanks to for sending it over! And of course big love for the El Cap and Nucleo! This is a KILLER rig!

05/14/2026

Out today - an F-type amp with MASSIVE cleans. The 62 B-Master has all the headroom you could want. Any drive you throw into it really has room to shine and show what it does best. Mr. Mayer favors these too and has used one in conjunction with other amps to sculpt his live tone. We can see why! Whether you’re a Sunday morning player, in a cover gig, jazz gig or whatever - this’ll do ya juuuuust fine 👌🏼

Grab it at SignalTheoryAudio.com! Link on comments.