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Is the RPA-1 based on the same design as the MPS 1 and what is the transformer size of the 2 channel unit?


The RPA-1 is based on the same design as the MPS-1. They are both Dual Tracking Class H amplifiers but the RPA does not have the wave form limiter (hard core stereophiles want all the dynamics they can get) and the transformer is slightly larger (400VA/ per channel vs. 350VA on the MPS-1). This increase in copper will offer greater dynamics but will not sustain a continuous increase in SPL. Also the VI sense on the protect circuit will still kick in if the amp is run into hard clip.