MarkBass SuperBooster pedal. Boost, VLE/VPF filters, DI. £95 Edinburgh

[mcnach]

Independently footswitchable clean boost + VLE (low pass filter) and VPF (a bit like a 'contour' control, scooping mids while boosting low/highs). 

Standard TS output plus balanced DI output (XLR).

 

Original MarkBass power supply included (but it works fine on standard 9V supplies - I used it for years with a T-Rex Junior supply, you just get a bit more headroom if powwered at 12V)

 

Bypass can be buffered or true-bypass (switch at the bottom).