This is about both amps and bass, so stuffed it in GD
Both my gigging basses are passive, and at rehearsals, where i use our guitarist's business warehouse, he has a Trace combo which i plug into, to save dragging my rig there.
The Trace has active / passive inputs, and naturally, i used the passive one. He asked why i used passive and i said because i have a passive bass, but his argument was because i go through a Zoom B3 first, the Trace no longer sees a passive signal as the zoom changes the impedance. I wasnt sure what he was talking about, being a bit technically deficient in that area, so is he right ..should i be using the active input ?
By the way, he's a clever electronics engineer, and builds upto 48 channel mixing desks for businesses here and Europe. He purchased all ex SSL stock after they closed down ( he was an engineer there ) and builds the desks from scratch.