Hypex N core module

Hi merrillaudio,

     Good information from an experienced and respected class D company (makers of the Veritas and Thor monos).  I agree that class D is still a maturing technology that  requires a complex design but has great promise.  
     I'm curious if you have any insight or thoughts on even further improvements in class D amp performance I've either heard discussed on audio forums or read about on more scientific sites:

1. Would higher switching frequencies benefit class D amp performance? 
     This is a topic which has mainly been propagated by one individual repeatedly not only here on Audiogon but on numerous other audio forums as well.   This theory states the current class D switching frequency (typically in the 500-600 Khz range) is too low and negatively affects  frequencies in the audible range.  I've had difficulty accepting this theory because I've never heard any evidence of this in any of my 3 class D amps, am unable to find any supporting scientific support for it and the only expert comment on switching frequencies I've been able to find thus far, from Hypex NCore and UcD inventor Bruno Putzeys, is that a 'reasonable switching frequency for a class D amplifier is just under 500 Khz or so, If you go much above that, you run into efficiency and headroom problems".  I'm trying to keep an open mind but was hoping you had some clarifying input on this matter.

2.  Will the use of eGan FETs be utilized in any upcoming class D power modules that you're aware of?

      These are the new Gallium Nitride FETs that switch on/off much faster than the current MOSFET transistors used in class D power modules.  If these switching output devices sound equally good or better than MOSFETS, it seems to me that could only benefit performance.  Just wondering if you know of any near future amps utilizing the new eGan FETs.

Thanks,
   Tim  

    

Anybody have experience with Nord Audio N-core power
amplifier ? The use own buffer module https://www.nordacoustics.co.uk/products 
and say the  Using Nord Input Buffer Boards (Full Specifications and Op Amp Sound) with high end discrete Sparkos Labs Voltage Regulators and a choice of Sparkos Labs SS3602 or the Sonic Imagery 994 discrete Op Amps both run in full Class A. And offers a richer, warmer, tonally dense musical sound with greater sound stage while maintaining all the benefits of the standard amp. Superb bass control with sweet high resolution mids and treble.

In what would be considered a "relatively affordable price range"...what is that then differentiates the Nord Acoustics from a PS Audio Stellar 300 from a Merrill Audio Taranas from a Benchmark ABH2 as they all have been given accolades for great sound at less than the price of a small car??

@snapsc 
 
Check all prices on Nord site, the multiply 1.3  plus  $ 100 shipping
and VAT  , it may be custom charge, 

PS Audio Stellar 300 is not Hypex N-Core , the get MOSFET output
stage,   Benchmark ABH2 is Class D , but dont mention which
module they used , i think no N-core.Just only Taranas  from Merill use
N-core, The sound excellent