HPA-nxV200 Stereo AmplifierHi Anthony!After building my new power amp, I would like to give you a short description of the unit itself. Due to the fact that these amp modules are so incredibly small, I decided to go for a rather small amp. So I was able to go for a smaller transformer, less smoothing capacitance, smaller heatsinks and, of course, a smaller enclosure. I used a fully encapsulated 250VA toroid transfomer with 2x24V secondaries, a 15A/200V bridge rectifier, 4x 10.000uF/50V Panasonic TS-HA caps and two heatsinks with 1,7k/W each. The enclosure is a very rigid steel case of Monacor International.I decided to build the amp without any input coupling caps at all, because I like to do some "cap rolling", and this way it will be possible to change the caps whenever I want to. At the moment the best I have to hands are some Black Gate N...

Preliminary listening impressions - no background hum or buzz, very quiet. Amps sound extremely nice! Nice clarity and soundstage, bass is quick and tight....I will admit that I have never fully believed or perhaps comprehended the "burn in" period discussed in camps at several levels but….. my goodness. I would say after about 6 to 8 hrs of play time, the sound really came into its own. The bass improved significantly, sound stage is staggering, highs are sweet and the mids are right where I want them. Listening to this amp play was pure pleasure. I am really looking forward more "seat time" with this unit along with more "burn in". You really are able to pick out subtleties on a CD that you have not heard before - even with my modest system. I am truly looking forward to showing off your handiwork to my friends who now may...

Hello, my name is Troy Madden and I wanted to share my experience with Anthony and his NXv200 amplifier modules. I had decided I wanted all rack mount audio equipment and to buy used rack mount amps and update them with state of the art electronics. After browsing eBay for a while I settled on Sumo amplifiers. I really like the look of them, and they have large heat sinks and beefy power supplies, since they are class A-AB. I was able to buy the Polaris's for less than one could buy chassis, heat sinks and transformers, etc. Since I am tri-amping my system, I bought 2 Polaris amplifiers and 1 Andromeda. Meanwhile I was also researching amplifier kits and modules. I found Anthony's site and was impressed by the specs on his modules so I ordered two of the nxV200's for my tweeter amps and Two NX400NP for my...