Class A amps


I've read a few articles on class A amps but still don't have a good understanding of how it affects sound quality. I've even seen amps which can be swithced into class A mode or AB. Does anyone have experience with this type of unit? Does class A have a true audible advantage or can it be detected only by test instruments? If it is audible, in what resepects? Thanks, Rick M.
mili224
I know you consider Pass Labs products as well designed
Yes they are, and that’s where it ends for me, much prefer the sound of Nelson’s Threshold amps he designed using bi-polar outputs. I don’t like the sound of Mosfet output amps, and that they don’t drive very low impedances as like the great bi-polars can, like Class-D also has diminishing performance well below 4ohms as well.


I submit the Legacy i.V4 Ultra for comparison to the Gryphon Antillion.

They’re just IcePower 1200 modules https://icepower.dk/buy/as-series/1200as1/ maybe with a couple of mods.
Your a very game man putting up an IcePower 4ch Class-D ( 610 watts per channel into 8 ohms, 1,000 watts into 4 ohms peak current 38A😴) They never seem to show 2ohm specs for Class-D as it usually ***** itself

A Gryphon Antillion https://gryphon-audio.dk/wp-content/uploads/2018/10/ANTILEON_1.jpg even though lower in 8ohm wattage nails the Icepower, (150 watts per channel into 8 ohms, 300w into 4ohm, 600w into 2ohm, and 1200 watts per channel into 1 ohm, 5000w!!!! peak per channel into 1/2ohm ohm peak current over 100amps)😵
a very game man indeed.

"A "great designed" class-A solid state cannot be bettered."
Legacy Audio i.V4 Ultra Amplifier vs CODA #16 will be done by me when I go to upgrade my CODA #8 to the #16. The dealer has the  Legacy Audio i.V4 Ultra Amplifier amp sitting right beside the #16. He is a huge Legacy Audio dealer. I was thinking of listening to it last time but I was having too much fun with the #16.


Easy to wire up

Just get 2 of these https://icepower.dk/buy/as-series/1200as1/ $600pair

And one of these https://icepower.dk/buy/power-supplies/1500s/ $400

Throw them in a nice box https://www.ebay.com.au/itm/162028925013?hash=item25b9ad3055:g:K~kAAOSw5VZXA2Ad $100

And for $1100 you’ll have a stereo version that’s just as good. You'll save $5k!!!!!!!!

Cheers George

I still have a pair of T400s an a S500 it's loaned out..

My T400 were set up by a serious Threshold NUT. They will push anything. He worked with James B for 2 years.. I had a pair of 2000 Ampzillas too. They will push a load too..

I haven't heard EVERY class D but I've heard a few and own both ICE and Hypex Ncore.

For high fidelity I'll take the Threshold stone stock.. Tuned correctly.. 
Nothing even close for the money...

I'm a hard core Krell guy too.. Say what you will. They can cost you a fortune in every way, but 1-400 class A watts is pretty mind blowing. Sound lab, MLs, Custom planars.. Krell active crossovers..  130 lb MBs
I've placed and wired a few pairs at 220/240. THEN they sound right..

I'll take them over big Macs any day. For HIGH fidelity. Same with Threshold over any SS Mac.. I like Mac SS (kinda :-))

Pass cost WAY to much, and has for a while, for me.

I'm looking at 20 acres of land 200k. An amp that cost 1/4 of 20 acres. 

Pretty simple choice for me.. The Threshold will outlast ME...

Regards