Can someone explain the Alleva Coppolo preamp to me...is it boost only? It doesn't have center detent knobs so if I turn it all the way down flat? what is the normal Flatt setting for it.
+1 to the above posts. Volume, Volume (with pre bypass), passive tone, treble boost only, bass boost only.
You will hear (I think you can hear it on the clips I posted) just a very slight widening of the tone (just a bit of a bass and treble boost... very slight) with the preamp engaged and flat versus the preamp bypasses. So, it's quite transparent.
Pure IMO, but since the Alleva's to my ear are really meant to cop a pretty accurate Fender type J tone, I rarely use the bass and treble boost at all. The most I ever do is add maybe 10% bass boost in some rooms or when slapping to just fatten the low end. I've never touched the treble control. Again, as you can hear from my clips, these basses have plenty going on up top inherently, and even though I like a grindy, treble present sound, I usually have the passive tone control dialed back a touch, especially on the LM ash/maple 70's model. (Edit: this assumes you are using a relatively accurate and transparent type backline rig. If you are using a very voiced head, like for example, a DB750, cranking the treble boost might be more subtle and actually necessary).
Use your ears is obviously good advice, but even though the pre is quite subtle through even extreme boost settings (compared, for example, to the Sadowsky pre), the more of that treble and bass boost you add, the less it 'sounds like an Alleva' to me personally (meaning the less it sounds like a true, relatively accurate vintage J).
It's a GREAT preamp, and just having the ability to fatten the low end a bit is wonderful. My LM and LG are literally the first basses I've owned that I would be very happy to play passive
