I absolutely love the tone/character/saturation of this thing. I don't just use it with guitar. Along with Sonimus Britson (Vintage Flat), T-Racks EQ 81 and and EQP-1A it is on every one of my tracks in a mix. The blend of these four ingredients in my spice rub makes everything sound delicious to me. Ignite Amps is incredibly generous to offer the TPA-1 for free.