That is a lot of information to absorb!Short response
Get Emg BQS If you want stock plus extra features or modify the original
Or if you don’t want a variable mid
get the OBP3 if you want like I had in my cirrus 4
* Long post!*
Ive had
Emg bqs
Bart
Audere
Obp3
In various peavey basses
Like the bquad
Cirrus
Gv
My personal opinion was
Obp3 was thick and subdued treble but not a whole lot while still being pretty veristile
The Bart was super dark and only got airy with the treble cranked- I had that in my GV when I bought it and switched the millenium which was MUCH better
Then the Emg BQS which was like taking a blanket off the amp
TONE!!
I got bored and tried audere but it imparted this metallic tone/ edgyness I didn’t like
If you don’t want the sweepable mid for ease … my first choice would probably be the Obp3
And at 18V it sounded great
A little goes along way too
but the Emg is king for me it was clear and adjustable treble was awsome along with the defined bottom end.. it never got muddy.. or boomy or was like a stupid clean DI
I had a Delano with emgx in a yamaha RBX JM6 and it sounded great! But i felt output was low
I also have a bunch of sound clips
If you want i can take some new ones too with certain eq settings you want
I currently have my b quad 4 with an OBP3
G bass with stock preamp modified
Forgot about that…
I’ve modified a ruined a few preamps lmao
But I have one for my G bass that works and I have graphed it (slapping the e string and then taking the first snapshot of the second the eq moves on the visualizer)
And there’s a HUGE difference in the bass extension treble extension and mids
It was a single 47UF 50V i belive
And five 25UF 50V
@AudioTaper did it first and has done a Nordstrand preamp in his
I also swapped the old TL072 preamp for a TLE2072ACP
Newer and lower noise
I know he also put a burr brown opa2132 I think but that needs a socket I believe as it’s Stupid tiny
I bought one in attempt to do it but it was too small… and
Well with fine motor skill issues… my hand shakes soldering