Bob, Steve and other guitar players -
This pedal is the preamp from the Echoplex 3, prized by folks from Jimmy Page and others as part of their sound. Picked one up last week.
While there's tons of gain available, even with the gain off, there's a 3dB bump that adds a pleasing midrange "thickererness" to Fender amps. Also makes some overdrive pedals come alive. Loving it on my Bandmaster and Tremolux; will try today on the Princeton Reverb as well.
For $100 street and tiny enough to fit on any pedalboard, worth taking a look at. It's a keeper.