I write as owner of a cherished Accession MM, driving my (other brand) power amplifier, which has recently expired.

On the point of purchasing Proprius amplifiers to replace it, I am distracted by a great deal of noise and claims about 'evolved' Class D amplifiers, e.g. 'GanFet', e.g. 'NCx500 modules'.

Based in the view that great amplifiers occur through a synergy of technological developments and skilful application (design and engineering) my question is, has GSD any interest in or plans to produce a Class D amplifier?

I do expect my ampli journey is moving inexorably towards the Proprius amps. My ideal scenario post-record player is to be 'fully Slee'd''.

It's just that it's a bit of money to lay out and that's why I'm hesitating when there's allegedly, apparently cheaper 'alternatives'  on offer.

Best,

D

In fact my previous amplifier was a Class AB design and I was very happy with the sound. Unfortunately it failed despite having undergone an expensive repair five years ago, and so I had to let it go. 

It's remarkable that you can put together a decent sounding system for such a modest outlay. I gather that, while Class D technology has been around for some decades, it has only more recently been developed and fully embraced in the 'audiophile' world.

It is for that reason that I came to wonder what potential there would be if the same ingenuity that produced the patented technology in the Accession phono amp was applied to a Class D design power amplifier.  When funds allow, I will indeed go ahead and invest in the Proprius amps, as I expect that will be the complete antidote to my questioning 'what if..?' :)

Thanks again,

D.

Class D amps have good power efficiency so generate less heat and can have very compact form factors, but they generate a lot of electrical switching noise that can compromise the fidelity of the output signal. 

Class A amps have poor power efficiency so are wasteful of energy, generating a lot of heat and causing the components to run hot, diminishing their usable lifespan and resulting in inconsistent performance. The power availability means lots of voltage swing though and less noise than Class D.

Class AB seems to balance the strengths and drawbacks of the different amp types.

The Majestic DAC/pre is a much admired product and I've seen the many reviews citing the great sound and pretty unique flexibility in use.

My particular system is vinyl-based so I connect a power amp directly from the Variable output on the Accession MM.

This unusual facility on a phono stage was a massive incentive to purchase for me as I try to keep the signal path as short a possible. The Accession was a game changer in my system and I'll never purchase another phono stage (except perhaps an Accession MC!)

On the odd occasion when I play CDs I'm happy enough to switch cables on the power amp (though any thoughts or advice on avoiding damage to the input sockets through wear and tear over time would be welcome).

My speakers are PMC GB1, which I like a lot, and I gather from the forum are a manufacturer fairly widely used with GS equipment with positive results.

Only thing missing now, in the absence of a GS design Class D alternative, are the Proprius, and a CuSat 0.6M cable, so they're next on the list. 

Thanks again for the helpful replies,

D.

When switching cables I would loosen any clamps and slide them out of the source component. There may be a better way...