I recently purchased an ESP LTD TA-204 FRX bass that looks great, very light and balanced but the tone was terrible. Very bright and distorted with no way to control it or add bass to it as it has a single tone knob and passive. I had 2 choices, send it back for a refund or add an active preamp, enter the EMG BTC Control. I own several basses with EMG pickups and decided to stay with what I knew I liked. I was hoping the BTC would help solve my tone issue but was not expecting any miracles. What I got was a miracle. I now have complete control over my tone with deep, punchy articulate bass and pristine highs. And when I say punchy I mean punchy. Even at low volume I can feel the notes and when I play at gigs, the low end has so much authority while the highs cut through with no problem and no distortion anywhere. Really happy with this product. I now have a bass that was almost returned and is now being used quite frequently. Thank you EMG and Sweetwater.