This is the marketing claim on the preamps:
"The PR-4 features the brand new ReGain Preamps™, ultra-quiet microphone preamps that deliver up to 60 dB of gain, providing enough amplification to drive even demanding dynamic microphones without the need for external inline boosters.
"Achieving an Equivalent Input Noise of -127 dBV (-125 dBu) represents a significant engineering accomplishment for the PR-4’s preamp design. Measured under A-weighted conditions at 60 dB gain with a 150 ohm source, this level of performance places the PR-4 firmly in professional territory, delivering an exceptionally low noise floor that preserves detail and clarity even with low-output microphones."
Mixpreii
-128dBu
76 dB gain range
Thats a rather BIG gain difference!!
s/n ratio likely MUCH better in the MPii.
This PR4 pres hovers right there between Zoom H Series and F Series in quality. With the F a single stage pre and the Deity a dual to get that quality.
Don't know why the big hype of this? It was basically designed for field use for capturing spoken word ...like interviews..and not designed for quality live music capture. End of the day ya spend more $$ on pres cables battieries adding more things that can go wrong or, buy a quality self contained unit that has great specs and quality pres. In the production field the former is adding way to many dynamics and problems to the mix.