Pow_22

I had the original MK1 amp for around 12 years, then all of a sudden I stopped liking the sound of it. It also sounded very muddy, even with new strings, treble turned up etc etc. Not sure if the amp had changed, or just my ears/tastes changed but I ended up selling it.

I then ordered one of the new MK2 amps, and I didn't like that either so it went back.

I still have the SP212 cab, but bought an Alpha Omega 500 head to go with it

Those amps are not flat with the knobs all at mid point. Try putting the bass at zero and the mid at max, then add bass and treble until it sounds decent.

I use one of these at a venue I play at regularly and I have to boost the mids and take the bass down to zero to get a usable sound onstage.

Hopefully this will help https://www.talkbass.com/threads/orange-terror-500-bass-eq.1417858/