Here's what they have to say about it...
The MP573 is a two stages, single ended class A preamp, based on the design that was originally used in the Neve 1290/1073 modules, that has been adapted to the '500' format of API.
The sound of the MP573, like its model is full, silky, detailed and musical, slightly larger than life, very complimentary to a digital recording environment.
The MP573 is great on vocals, acoustic instruments and generally all close miked sources that need to be pushed forward in the mix.
Pricing and Availability:
Price: 275.00 € (328.90 € Inc. VAT)