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Oct 20, 2016 at 4:58 PM Post #13,504 of 149,385
stand said:
 
I'd rather get a Magni when on a budget. Yes some of the Class T and D Amps are somewhat cheaper, ....
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A 40 watt (?) T amp cost me < $40 vs $200 for Magni 2 locally , I don't think Magni would be much good for 8 (4) Ohm loudspeakers.
confused_face_2.gif

I only bought it out of curiosity, at that price why not?
(Actually use class AB integrated for speakers and Jot for HP).
 
Oct 20, 2016 at 6:08 PM Post #13,505 of 149,385
jimmers said:
  A 40 watt (?) T amp cost me < $40 vs $200 for Magni 2 locally , I don't think Magni would be much good for 8 (4) Ohm loudspeakers.
confused_face_2.gif

I only bought it out of curiosity, at that price why not?
(Actually use class AB integrated for speakers and Jot for HP).
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I was thinking headphones, so power was not a consideration. Do realize that the amp will deliver far less power at headphone impedances that at the 8 or 4 Ohms for a speaker load.
 
Oct 20, 2016 at 8:09 PM Post #13,506 of 149,385
Most of the reviews I have read of the cheap T amps are they don't sound that good at high levels which does not surprise me considering the crappy power supplies they have,  As albeza said background listening on a budget was the only reason why it was a consideration. I have found some options otherwise that are class A/B. There are not many small desktop sized amps that are not Class D. Audioengine is the one that seems to pop up a lot.
 
Oct 21, 2016 at 12:03 AM Post #13,511 of 149,385
jason stoddard said:
Class T = Class D. No, thank you.

Think of Class D as DSD8 or something like that. (like 1/8 the rate of DSD64). Same idea. Throw away the original for an approximation. Doesn't sound so appealing now, does it?
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In my day job, much of what I worry about on the technical side is how to get good and useful approximations of perceptual and cognitive processes. And the "original" in your case is already an approximation. To pedantically agree with you, the problem is not approximation per se -- it's inevitable -- but how much confidence we can have in the approximations we are bound to use. I've been listening to 1) a pretty well reviewed class D amp with a decent D-S DAC ($3K total) with nice KEF speakers vs 2) a Bimby + (Asgard 2 then Jotunheim) with nice MrSpeakers headphones over the last year. Same recordings. I listen to lots of live music too. 1) is pleasant, but 2) wins on reality/grit. As I tried to understand these differences, I've concluded that the problem with the approximations in delta-sigma DACs and in class D are very much like the problems I find in my day job. There are many adjustable design parameters that allow the designer to achieve average good quality, but there's no way that the designer can anticipate all possible input combinations, and some of those can trigger less good behavior. In contrast, a faithful DAC and a purely analog amp have far fewer degrees of freedom, so if they are good on average, they are likely to be also decent with less common inputs. This is really interesting to me: the most difficult design and product launch discussions I'm involved in are about average case vs worst case system behavior, and how systems with complex dynamics and lots of tunable parameters can get great average case behavior at the expense of horrible worst case performance, unlike more constrained systems with simpler dynamics that can be predicted in advance.
 
Oct 21, 2016 at 8:25 AM Post #13,514 of 149,385
I had asked about class D in Baldr's thread.  His response was a bit more colorful than Jason's :wink:
 
Oct 21, 2016 at 10:35 AM Post #13,515 of 149,385
I want to know if this even applies to ncore modules.  I thought the ncore/pascal/abletec level modules had gotten beyond the whole class d treble sucks issues
 
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