Swarbs74

Hello everyone, I'm a total novice on bass, played guitar for decades but just now appreciating the world of bass and the differences I need to learn. My bass is a Luna P Bass and it makes a hissing noise when plugged into my focus rite solo and I'm using headphones. If I turn the tone control down the hissy noise lessens only a bit. So far I've tried to use a Zoom B1 and a Sonicake Boom Ave but the sound quality was poor and the hiss when using drive and compressor was very loud and off putting. I don't have an actual bass amp, ive tried the pedals through two notes wall of sound via the focus rite solo audio interface. Im aware single coils on guitar can hum so I'm wondering if this is normal, is there anything to try, noise gates or is this just how bass is?