I've had a Fender TBP-1 for around ten years. It's a very versatile 1u pre-amp with tube overdrive and the classic fender tone controls. I've tried allsorts over the years including SVP-pro and Alembic F1-x, not to mention several Mesa Boogie heads but i keep coming back to the fender for it's lovely rounded tone. It's coupled to a QSC PLX 2402 power amp and Mesa 410 and 210 cabs.