theese pickups come already on my fender mark hoppus bass and they nice!! the bass dosent have any tone knobs just one volume but if u just adjust the treble on r amp you can any sound you want from a really trebley punk sound 2 a booming metal sound and the inbetween sound that is my favourite! they r very versitile and can be used 4 a lot of tones that you wouln't expect form a p-bass pickup it is very punchy and has a quick response and they have phat poles on them and look good with the bassline logo :P <br/> <br/>buy them or a fender mark hoppus bass! or splash out on a musicman stingray- probs the best bass i ever played on but if u wana make a cheap bass sound gr8 get theese!