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Old 4th March 2009, 10:47 AM   #11
ttan98 is offline ttan98  Australia
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Neomatth,


Any update on your evaluation of T-Amp 90?
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Old 4th March 2009, 11:41 AM   #12
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ttan98> I'm working on it, it will be done before the end of the week.
It will be posted to Diyaudio, so don't worry, you won't miss it.
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Old 4th March 2009, 01:45 PM   #13
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Quote:
You do know that both Charlize AND the Truepath use hole mount chips (the TAA2020 and TAA3020, respectively) right? So you're argueing that the SMD chipsets are theorically and technically better but at the same time you also prefer the through-hole chipsets over the SMD ones. Very strange arguement indeed
Hi,

I am well aware of the amps using hole mount chips.
I think you are misunderstanding what I am trying to say or maybe I am saying it the incorrect way to be easily understood.

The chip being hole mounted of itself is not the amp. The amp is the complete circuit with all the ancillary components used to complete the entire amp, so, all the resistors, caps, inductors etc are all parts used to make the complete amp. This is where my bringing up e.g. inductance comes in, smt parts versus through hole parts.

The other point I was trying to make is because something is theoretically and or technically better does not mean (in this case) it must sound better.

Charlize and Truepath are both hole mounted chips but the ancillary components are all smt.

My Charlize uses air core output inductors which is technically not the best way of doing things but it sounds great to my ears.

I hope that helps you understand what I am trying to explain.
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Old 5th March 2009, 12:54 AM   #14
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Default Tripath 2020 vs. 2024

Well, to my ear, the 2020 definitely puts out a little more sound. I'm surprised to hear Saturnus say they're the same inside. I'd quantify the 2020 to be 10%-20% louder to my ear, and I've spent a good deal of time listening to them side by side, and have tested many examples of each. Both produce a really sweet sound, I don't have a preference between the two, except to say the 2020 is better if you want a little more sound or want to drive slightly bigger speakers. With that said, efficient speakers are really a MUST with these amps. The listening experience is just way better.
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Old 6th March 2009, 03:57 AM   #15
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Default Re: Tripath 2020 vs. 2024

Quote:
Originally posted by p-macaudio
Well, to my ear, the 2020 definitely puts out a little more sound. I'm surprised to hear Saturnus say they're the same inside. I'd quantify the 2020 to be 10%-20% louder to my ear.
Maybe it is because they have different input gain setting,
both of them have modulation gain of 12,
the input gain is set by ratio of two external resistors Ri and Rf,
Open up the case and see the resistor after input capacitor which is Ri and Rf is between pin 10,11 or 14,15 of TA2024, between pin 9,10 or 12,13 of TA2020.

As long as they are identical in the two module,
They should have the same total gain and they should have the same loudness,
I suspect that you hear that 2020 is louder is just because they set the module with higher input gain.
Just change two resistor on TA2024 PCB, you can always make it louder than TA2020.

What is meaningful is see how much Watt before amp starts to clip and distort.
Refer to datasheet of TA2020 and TA2024,
with VDD 12V, 4ohms load,
TA2024 starts to distort at the output power=9W
TA2020 starts to distort at the output power=11W
with VDD 12V, 8ohms load,
TA2024 starts to distort at the output power=5.5W
TA2020 starts to distort at the output power=6.5W
This is why we say TA2020 is a little powerful than TA2024.
Just a very little thuogh...
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