nxV200 Testimonials

I have a pair of stereo amplifiers using your 4X  NXv200 modules which were assembled by Mark Houston. I have to say that they are the best amps I ever heard.
 
With experience from a few other amplifiers, yours simply decimate all others. Clarity, soundstage, transparency and speed of bass simply eclipses any other amp that ive heard. They are so crystal clear that they do great justice to my 2 way floorstanders using Scanspeak 18W8531G00 and Vifa tweeter.
 
The amp is dead quiet. I had to strain myself to hear the slightest stirring of noise but it was coming from my hair that was rubbing against the cone of the speaker! I have thrown all my passive components away and set up my active crossover, with each driver independently powered by your modules.
The sound is so natural and filled with emotion that I challenge anyone to feel nothing after listening to them.
 
A truly exceptional module you have designed.

Guitar string resonances reveberate with authority! Walls are vibrating though the sub is off. So far this kills my Marantz amp in all aspects; warmth,clarity,soundstage,coherence and speed.
The slightly bright nature of the amp is neutralized by the mellow sounding Vifa tweeter. What emerges is absolute listening pleasure!

Dinesh, Melbourne, Australia

Congratulations on very fine amplifier Anthony, it exceeded my expectations. You should be very proud of this design.

The grip it has controlling a speaker is quite remarkable and smoothness is outstanding. 4 hours straight, no bleeding ears, fatigue or head ache.

Full review found in Gallery section, a must read !

Peter from RZaudio (aka rabbitz) . NSW, Australia

Preliminary listening impressions - no background hum or buzz, very quiet. Amps sound extremely nice! Nice clarity and soundstage, bass is quick and tight.... 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 to more "seat time". You really are able to pick out subtleties on a CD that you have not heard before - even with my modest system.

Dan Dearlow, Edmonton Alberta, Canada

Wow. Everything was there. Crystal highs, space, tight and deep bass. Everything was so nice balanced, no matter what type of music we were listening. After few hours and a few beers, my brother almost started to cry when we were listening Peter Gabriel's first album

Danko, Israel

Anthony made a Stereo HPA nxV200 Amplifier for me , the improvement over the Arcom AVR300 is mind blowing More detail and bass control in movies [war of the worlds] .

Jeff William SA, Australia

The all new nxV200 VFET-MOSFET Audio Amplifier Module is a very high performance, high end audio amplifier module which is biased into Class A/B.

The sound quality from this amplifier module is absolutely stunning!!!

Utilising the latest SMD low noise, high linearity Toshiba and Zetex transistors

And very rugged high performance Toshiba VFET-MOSFET output stage.

The nxV200 has a flat distortion curve 0.006% from 5hz to 20khz and a frequency response of 5hz to 300khz -3dB and a very low noise amplification of -120dB and is able to drive on a continuous sine wave basis into 4 ohm loads and up.

But the nxV200 is not all specification's the sound quality is very detailed and has a wonderful deep sound stage.

Output Stage Bias Stability of the nxV200

Unlike a number of VFET and HEXFET designs that are out there. The nxV200 output stage bias stability is rock solid at any power level or load. Once the bias has been set it will not drift more than a few millivolts over its normal power range.

There has been some designs I have come across that tend to over compensate the biasing and course excessive crossover distortion to happen as the power increases, or in the other extreme the bias is very hard to set and drifts all over the place and overall tends to under compensate. Which then places the output stage in a position of been a time bomb waiting to explode and in a lot of cases often does.

• Audiophile Amplifiers

• Home Theatre Systems

• Recording Studios

• Public Address Systems

• Powered Loudspeakers

• Ultra small form factor PCB
• Designed as high performance Home Theatre multi channel amplifier
• Or High End 2 Channel stereo amplifier
• Unconditionally Stable into any load from 4 to 16 Ohms
• Extra Heavy Duty three ounce copper printed circuit board
• Ground plane Layer for very low noise.
• Rugged high performance complementary Toshiba MOSFET Output Stage.
• Supply voltage as low as +-20 volts DC to +-60 volts DC
• The amplifier module comes with a comprehensive installation manual.
• The nxv200 is 2 Ohm stable.