Booster

The Titan PreAmp Sweetener is tweaked to my taste and meant to be used with preamp pedals or in the FX loop of your amp that unfortunately doesn't have Presence and Depth controls. While this isn't true Presence control like your 5150, it's an emulation that brings additional character and life to your tone by simulating power amp dampening.

JFET Boost Pedal

OAMP is the Output AMPlifier from 29 Pedals.

An input driver that replaces a conventional buffer, EUNA is built to protect and condition your instrument's signal to prepare it for whatever you want to do with it.