Spectron Musician III MK.2 or Audio Research DS450

BTW, I suspect average sound quality for most listeners on various devices including portable is better today than back then, but the frontiers of hi fi/sound quality have moved forward, as has the cost of "high end sound" in many cases, plus also high fidelity is no longer a novelty, rather something that is assumed by most in accordance with their individual expectations, so you just do not hear about it anymore very much outside of audiophile type circles.

Audiozen - I just wanted to make sure I'd understood this correctly: Dennis Deacon said that his new amp series, which I take to be the M2 series, has zero feedback. Zero feedback? If that is correct, that is a very intriguing technical development. There was a review of the M2 in the SixMoons from Sept, written by Glen Wagenknecht. It's a very positive and interesting review, but there is no mention of zero feedback.

BTW, the M2 series retails for a bit less than the W4S, so it's an affordable high-end component. Wagenknecht couldn't make a direct comparison between these two brands but based on memory stated that he thought the M2 had improved treble tonality and warmth.

If D-sonic is price competitive with wyred with alternate/newer technology I will have to read up on them. Last time I looked, they were selling essentially stock Icepower models in a box for reasonable cost. That's not hard to do, and might offer good bang for buck for many. Wyred, Bel Canto and others cost more but added enhancements like custom input (for better results with a tube pre-amp) and power boards for better power supply.

Jult52..Dennis brought up the zero feedback issue in my conversation with him last Sunday and pointed out this the
is the problem with other Class-D amps. Other companies have zero feedback amps including Hegel, Sanders Magtech and Soulution just to name a few.

Mapman..Dennis at D-Sonic pointed out that he only uses B&O
ICE amps for the surround channels only in his multi channel home theater amps. He has done major mods on the SOA core amp. On The D-Sonic website select the products tab and click on the 6Moons picture which takes you to the review. Go in several pages and there is some good interior photos of the SOA amp. You will notice a red p.c.
board on a raised platform which is a modified input stage
that Dennis designed. He also added EMI/RFI shields and filters and added a higher quality A.C. filter which improves grounding, and uses all silver teflon wire.