2. amps-preamps
  3. 161730-130690

High end Class D amps?

Just an observation and a question. Are there 'high end' Class D amps out there that are just as good as Class A, A/B amps? I realize that's a sensitive question to some and I mean no disrespect---but whenever I see others' hifi systems on social media, all of the amps are A or A/B. There's always Pass, McIntosh, Moon, Luxman, Accuphase, etc. Where are the Class Ds? For folks out there that want more power for less efficient speakers and can't afford the uber expensive Class As, A/Bs, what is there to choose from that's close to those brands? Thanks
bluorion
audio2design
1,351 posts
 
Is there a moderator in the house?

Hey moderator, this @georgehifi character pollutes every single Class-D thread with tons of messages making a claim that is totally wrong. This must be the 3rd of 4th thread just since I joined.

@georgehifi,

I am not going anywhere.

Your repeatedly attempts to use EPDR shows you have no idea what it means and how it relates to amplifiers, and I would say contrary to what Atmasphere said, it does not apply at all to Class-D as the FETS in Class-D do not operate in the linear region, hence the phase has no bearing on the thermal loading of a Class-D amplifier.


As well, Class-D amplifiers may not double in power intentionally, as they may intentionally current limit. That is not a bad thing and has no impact on sound quality if you are not driving into clipping and there is no stability issue. Your repeated attacks against something you clearly don’t understand really needs to stop.
audio2design
1,351 posts
 
It’s rare that someone will state so clearly that the don’t understand what they are arguing about. As a monument, I will place this here.

Hint for George, EPDR is NOT a measure of current loading. It is a measure of equivalent thermal loading. Unless the load is a resistive only, this will ALWAYS happens somewhere other than where the current is at a maximum.

georgehifi8,069 posts12-15-2020 6:09pm
George - You’ve brought up this notion of EPDR in several class D threads, but haven’t explained how it relates to class D.
It relates to any amplifier seeing the low EPDR loading which demands extra current to be delivered from the amp, which Class-D’s don’t do as well as good linear Bi-Polars can.

aolmrd1241
1,039 posts
 
I see a slight problem in Michael Fremer’s review of the PSA amps...he and Paul McGowan happen to be very good friends...so..for reality’s sake...I would take that review with a grain of salt.
audio2design
1,351 posts
 
It's Fremer. If a dog looked like a turntable, he would claim its bark sounded like Pavarotti. I take anything he says with a bottle of salt.
tweak1
3,655 posts
 
noble,


as an X maggie 3.5R owner, I wish I was aware of this back then. Consider posting this in magnepan threads too
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