I heard them at CEDIA. They are impressive class D hybrid amps.
Finally Heard the Mark Levinson 53 Amps
THANKS to HARMAN for lending a pair of 53's to a local dealer (who in turn brought them over for an audition) i can now comment on this product. after a few years of
wondering how they compared to my Levinson 33H monoblocks, which to me sounded supremely transparent, there is a very noticeable lowering of the noise floor still further. the problem is that you need exceptional recordings to get the most out
of this difference. so on one cd there seems little or no improvement in revealing further detail, or a larger stage, etc. while on a truly outstanding disc there is an unmistakeable 25% or so improvement in minute details and 3-D realism. i also
pulled some good aftermarket power cords out of the closet and that helped quite a bit.
wondering how they compared to my Levinson 33H monoblocks, which to me sounded supremely transparent, there is a very noticeable lowering of the noise floor still further. the problem is that you need exceptional recordings to get the most out
of this difference. so on one cd there seems little or no improvement in revealing further detail, or a larger stage, etc. while on a truly outstanding disc there is an unmistakeable 25% or so improvement in minute details and 3-D realism. i also
pulled some good aftermarket power cords out of the closet and that helped quite a bit.