Topping PA5 (TPA325X) : Is a modification worth it? ?

[Amplifier dude]

Oh forgot the Icepower TPA3251 based 100AS2 module. Had that in late 2016 before most people even heard of the chip. And the Icepower Iceegde based 300A2. Had 4 of them a year before publicly unveiled.

 

[454Casull]

I'm not casting your credentials in doubt. I'm asking you if you have any more room up on the cloud you're on.

 

[KSTR]

Oh forgot the Icepower TPA3251 based 100AS2 module. Had that in late 2016 before most people even heard of the chip. And the Icepower Iceegde based 300A2. Had 4 of them a year before publicly unveiled.

Speaking of which...

One of the earliest 100AS2 ever, PCB rev. 6144589C pre-production sample, identified by the 33079 quad vs. two 33078 duals for later revisions (to allow for AS1/AS2 simple BOM variants). That must have been 2015 IRRC.

Same for various other pre-production modules from ICEpower and others.

Your're not the only engineer early bird on the planet ;-)

 

[Amplifier dude]

Mine was after that. But this one was pre-production.

 

[Amplifier dude]

First 2 Purifi 1ET400A versions. Spot the differences. The one on the left is the very first Purifi 1ET400A module.

 

[bucks bunny]

So what? If you want to impress me, show your own designs.

 

[Amplifier dude]

Icepower 100AS2 and 200AS1

 

[Amplifier dude]

So what? If you want to impress me, show your own designs.

Nothing could impress you. Green with envy maybe, but not impress.

 

[Amplifier dude]

More stuff collecting dust.

 

[TNT]

Still no word of the Bricks... https://icepower.dk/products/amplifier-power-modules/icebricks/

//

 

[Amplifier dude]

Still no word of the Bricks... https://icepower.dk/products/amplifier-power-modules/icebricks/

//

I was going to get that demo board, but the amount of cost to build a custom power supply and motherboard wasn’t worth it for the performance offered. The 300 and 400A2 smoke them, and are turnkey modules.

 

[TNT]

I could not get them to tell me the current draw of the low power section so I ditched that project. They just didn't seem to know - B&O pointed to Profusion... Rellay strange. But they seem interesting I think. Now they seem to specify it when looking at it...

//

 

[Amplifier dude]

I could not get them to tell me the current draw of the low power section so I ditched that project. They just didn't seem to know - B&O pointed to Profusion... Rellay strange. But they seem interesting I think. Now they seem to specify it when looking at it...

//

Ice bricks was a Norwegian company who was later bought out by Icepower. So probably few people there who know all the technical details.

 

[bucks bunny]

Nothing could impress you. Green with envy maybe, but not impress.

Sorry that your are wrong, Buying the latest stuff neither impresses me nor nags it on me anyway as you might hope.

 

[Amplifier dude]

Sorry that your are wrong, Buying the latest stuff neither impresses me nor nags it on me anyway as you might hope.

Glad to hear what you think is important to yourself.

 

[bendix]

Rising THD+N with a wide bandwidth out of the range of human hearing gives a flawed result when measuring class D amps. Because the harmonics that cause the rise in distortion are out of the band of human hearing.

I’m not saying it’s total crap, but certainly not the 2nd best amp in the world. Like I said earlier, slightly better than the $35 Icepower 100AS2 amp based on the same class D chip.

https://www.soundimports.eu/en/icep...MI59zi9s_w9AIVeY9oCR0SIAN4EAAYASAAEgKzavD_BwE
140E

 

[Amplifier dude]

You can order direct from Icepower too. With worldwide shipping included.

https://icepower.dk/buy/as-series/100as2/

 

[mamocel]

As much as you wanted to pass for wells of science ... There it becomes heavy .....

 

[PMA]

But why wouldn’t the most important single chart be the one in the headline?

Rather the least important. THD+N at 5W/4 ohm/1kHz is probably the least important parameter of any amplifier. Just good to make a new fetish.

 

[Amplifier dude]

Just out of curiosity, do you intend to be so condescending and confrontational, or do you actually think about learning and sharing (maybe more for the former than the latter, in your case)?

You’re acting although I was targeting you specifically with that remark. Why is that so?