Having upgraded my speakers I was looking for something a little better then my monobloc chip-amps, but wanted to keep the chassis as there a good fit with the rest of my system.So using 45V rails and 20,000uf per unit, in went the HPA-nxV200 modules.The first thing that struck me was the improvment in the bass, very quick and tight.The treble was smooth and detailed, and the resolution just outstanding!I'm very happy with the results.RegardsMark G.Melbourne, Australia

Hi Anthony I would just like to point out that I think your build quality is far superior to the Classe Audio, I've been doing some A/B testing of the 2 x Classe CA-M400( http://www.e-hifi.com.au/classe/Amplifiers/cam400.aspx ) and the nxV500's.I think the nxV500 are better, the M400's are $10.9k each!You have made some fine amplifiers :) Nicholas HCanberra, ACT

Hi there Anthony!..well, the modules (Nxv200) are simply astonishing!the expected control and resolution on the whole bass region(sub bass to mid bass) is amazing , especially considered that I use the"old"psu from my NAD C325B (one toroid, say 230 W ,one integrated rectifier,two (unknown) 15000 electrolitics) for both the two modules.even the rest of the spectrum reveals far better resolution,one of the amazing thinks that I hear is the "life like" sound of metal clash(in movies effects for example, or cymbals..)however absolutely non fatiguing sound!Very well done Mr Anthony E Holton !!!I'm really a satisfied customer.Massimiliano Colarusso, Italy