Hey Fellow Bassers, I just ordered this product for my bass and would love any and all info you can give on the hipshot (or any brand) tremelo for the bass.
In response to the thread question... I believe it should go both up and down in pitch with the standard routing instructions provided. You may have to go deeper to get the pitch to go high enough for your taste though.
Looking forward to being able to slap, pop, finger AND wiggle my bass
