what i'm going thru is; i practise in a small bedroom or the living room; WAY dif!,,when you can open it up(EQ every string to be clean clear crisp tonally)it's like in a 12 ft room it's tough,,,pedals can add weird`dead frets' semi dead actually,or i've had odd times when a bass will REALLY get noticably louder around the oh?,,,what? 8th fret? on the A string
anyway,,i'd try an amp with lots of headroom in as big a room as you can find,`open it up' tonally with amp and volume knobs on instrument,no effects of any kind,that should tell the tale of truth

i havent been playing bass very long compared to many here but i've been thru several combo amps and for me; buying a large wattage head was like a new beginning= really opened my eyes tonally about what was possible
i'm not saying it's you but i struggled with amps that had 100 watts and 150 watts(SState),especially with pedals,,,witch i love but give me a clean honest 500 watts in a decent size room and every string will ring clear,,ok like last night i jammed with a fuzz pedal and my combo amp,seemed like i wasn't 100% happy with A versus D string tones and half the E string was`quieter' but hey!,,had to have that heavy FUZZ
anyway,hope i didn't cornfuse anyone too bad house full of grandkids hyped on candy bars(i guess? i have to go outside where it's calm) peace man keep us posted what you find
