The DepthFinder is an active boost-only EQ pedal that simulates the tube amp Resonance and Presence controls, but without having to be done in the power amp. This means you can use it with an amp that doesn’t have Resonance and Presence, by patching it in the effects loop. It also works great for building a pedalboard direct signal, since that low damping factor is a key ingredient to the overall tone. It can easily make a solid state amp sound and feel more like a tube amp, and can actually widen the bandwidth since it boosts at very low and very high frequencies.
Demo by gearmandude (EN)
Official Product Video (EN)