Mayones craftsmanship is the best out there. Seriously. My Jabba is flawless, super nice to play, but sounded horrible. I don’t know if it was the Delano’s or Mayos own 3 band preamp. The blend was more like a 3 way switch (like most preamps) and the passive tone did nothing until the last 2mm of knob travel. And then it sounded weirdly honky. The chosen bass mid and treble frequencies were terrible.
The bass just wasn’t getting played.
So the pickups and preamp were removed and I installed Bartolini B-Axis pickups and East Uni Pre. The difference is staggering. It sounds great with any setting. And this is the first preamp where the blend does just that. Those Barts are seriously nice!