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<blockquote data-quote="hispls" data-source="post: 8544813" data-attributes="member: 614752">The latest and greatest Zed designs are being used by Focal.&nbsp; Cutting edge technology in those.... priced accordingly.&nbsp; I believe he designed a few for Mosconi as well and of course the Zed branded amps are no slouch either.&nbsp;&nbsp; He designed the Phoenix Gold SX series a few years back which are a great starting point for full range class D.&nbsp; They do NOT have regulated power supply (a sacrifice made for space saving) but are great amps and can be had for fairly cheap.The ESX is likely worth repairing.&nbsp; Send it to Stephen/Zed and it&#039;ll get done right.There&#039;s a huge deadening thread at DIYMA that you can read for various suggestions there.&nbsp; You could write a small book on the topic these days so I&#039;ll leave that up to you.&nbsp; Butyl + aluminum and MLV are the two most popular products though so between the two you should be able to do whatever you want.Yes, most of the brands from 15 years ago are now junk, and even Rockford for example makes very nice amps, but their entry level (prime) has always been pretty low quality IMO.&nbsp;&nbsp; That said, apart from reliability, features, build quality, if you&#039;re not scraping the absolute bottom of the barrel in flea market junk you should not &quot;hear&quot; the difference between the vast majority of amps sold these days provided you run them within their intended limits.</blockquote>

[QUOTE="hispls, post: 8544813, member: 614752"] The latest and greatest Zed designs are being used by Focal. Cutting edge technology in those.... priced accordingly. I believe he designed a few for Mosconi as well and of course the Zed branded amps are no slouch either. He designed the Phoenix Gold SX series a few years back which are a great starting point for full range class D. They do NOT have regulated power supply (a sacrifice made for space saving) but are great amps and can be had for fairly cheap. The ESX is likely worth repairing. Send it to Stephen/Zed and it'll get done right. There's a huge deadening thread at DIYMA that you can read for various suggestions there. You could write a small book on the topic these days so I'll leave that up to you. Butyl + aluminum and MLV are the two most popular products though so between the two you should be able to do whatever you want. Yes, most of the brands from 15 years ago are now junk, and even Rockford for example makes very nice amps, but their entry level (prime) has always been pretty low quality IMO. That said, apart from reliability, features, build quality, if you're not scraping the absolute bottom of the barrel in flea market junk you should not "hear" the difference between the vast majority of amps sold these days provided you run them within their intended limits. [/QUOTE]

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