What is your favorite Class D amp?

@jimbennet 

@atmasphere 

@erik_squires 

All of you guys are selectively quoting facts in an attempt to mislead one another.

Here is what the TPA3255 datasheet actually says:

Power output per channel

RL = 4 Ω, 10% THD+N 315 W

RL = 4 Ω, 1% THD+N 255 W

RL = 8 Ω, 10% THD+N 180 W

RL = 8 Ω, 1% THD+N 150 W

So, all your dueling quotes were correct. And all were taken out of context in an attempt to win a dumb argument that never existed in the first place, although to be fair @jimbennet only claimed 60wpc when he first brought up the amp, and that appears well within the chip’s capabilities, at low distortion.

TPA3255’s THD+N is only .006% @ 1 kHz @  1W https://www.ti.com/product/TPA3255-Q1

At least Texas Instruments (the maker of the $12 TPA3255) know what they’re talking about.

All of you guys are selectively quoting facts in an attempt to mislead one another.

@devinplombier - See, here I was trying to steer this conversation into a more constructive form that gentlemen would recognize.  Accusing me of attempting to mislead anyone has no fact behind it, rude and inflammatory without reason for it. 

I'm sure you could have pointed out the same data without attributing a deliberate attempt to mislead anyone.  

The TPA3255 is 1% distortion per the site specs as I posted. Not 10%

All of you guys are selectively quoting facts in an attempt to mislead one another.

@devinplombier This statement is false. Facts are never misleading. 

Something that you are not taking into account is the supply Voltage fed to the chip. That determines how much output power is available. 

It doesn't affect distortion so much at full power for the given Voltage.  Do you see how this works?

That is why the specs Jim quoted above are likely to be true despite TI correctly stating its distortion at that power using a greater power supply Voltage. 

If the Voltage sags at full power the amp is also more likely to have higher distortion. That is why a robust supply is so important. 

@atmasphere wrote:

This statement is false. Facts are never misleading. 

...unless you happen to omit half of them. But let’s go back:

@jimbennet wrote:

Why all the $2K amps? The $110 Douk NS-13G sounds as good as rebuilt tube amps having best tubes and coupling capacitors. Amp has phono stage and tone controls. 60 watts per channel.

Much of that statement is legitimately objectionable, but not really the 60wpc claim. Yet for some reason that’s what you chose to focus on: 

@jimbennet If you think it sounds as good or measures as well you’re fooling yourself. Look up the specs on the chip it uses and you’ll see: 10% THD at full power [...] can drive up to 2 x 315 W into 4-Ω load at 10% THD

Yes that’s true, but it’s irrelevant since @jimbennet claimed a mere 60wpc for the Douk amp - not 315wpc.

I think you’ll agree the TPA3255 can deliver 60wpc at less than 1% distortion, let alone 10%.

It would have been better to explain why comparing a garbage $100 amp with well-designed and properly built amps is apples to oranges, starting with, as noted, their respective PSUs’ power-delivering abilities.

Look, I guess what I want to say is that it’s always best to educate when you’re in a position to do so, which I believe you are, rather than shut down people with selectively quoted data from, in this case, the TPA3255 datasheet which, if anything, supports @jimbennet ’s 60wpc claim.

Sharing knowledge benefits everyone, especially on a forum like this one where technical proficiency levels are quite diverse.