Mic Preamp Shootout - Analog Preamps vs UAD Unison

[MirrorProfiles]

Thought I'd do it blind, theres a mix of various analog preamps and some UAD Unison ones. Which do you like best?

Amp is Bogner Uberschall Rev Green
Cab is a 2002 Mesa OS
Mic is a USA sm57 Unidyne III

Generally adding about 30dB of gain from the preamps - not driving them hard just so its fair (IMO some preamps come to life when you drive them). If there is an option to adjust impedance, I'm set to the highest impedance of each preamp.

No processing on the guitar tracks besides normalising to the same level.
Mix example has some EQ on the mix bus (same for all tones).
Isolated examples have no mix bus EQ applied.

You can download the isolated examples here: https://we.tl/t-qgcjZw4QWd

 

[laxu]

Only preamp E sounds marginally different to me. I probably wouldn't care if I had any of these.

I expect they'd only sound different if driven into distortion.