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Old 9th May 2005, 08:00 AM   #11
opentop is offline opentop  Netherlands
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It has been playing for more than 100 hours now. And it's really beautiful. From bass to the upper highs. No, I'm having no regrets purchasing this one.
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Old 16th May 2005, 07:48 PM   #12
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It seems that there's some experience here with both the tripath eval board and a stock retail version. How does the eval board stack up against a sonic impact. Is it worth it to get the eval board before going to the trouble of new cabinet, volume, etc.
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Old 17th May 2005, 12:03 PM   #13
ohenry is offline ohenry  United States
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Quote:
It seems that there's some experience here with both the tripath eval board and a stock retail version. How does the eval board stack up against a sonic impact. Is it worth it to get the eval board before going to the trouble of new cabinet, volume, etc.
It depends. If you don't want to or have the skills to do modifications, the eval board TA2024 will sound better that the stock SI due to it's parts (especially the input cap values = better bass). The eval board needs a preamp and a power supply (SLA battery, wall wart, a $20 Pyramid supply from Parts Express, etc.). You'll need a PS for the SI as well. Most folks weren't too happy with the built in AA batteries.

Eval boards facilitate experimentation since they have banana and RCA jacks built in making temporary hook ups easier.

I suppose it all comes to your intentions and the scope of the project.
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Old 17th May 2005, 06:13 PM   #14
opentop is offline opentop  Netherlands
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I couldn't agree more. Already wthout mods, the TA2020 will give you more bass. And more volume.
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Old 24th May 2005, 07:37 PM   #15
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Thanks for your input. In the end I decided to get a couple of amp3 kits from 41hz. It gives me a lot more options.
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Old 29th May 2005, 10:02 PM   #16
dgo is offline dgo  Netherlands
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Interesting. I've got some thoughts and some questions to add.
I too bought two evaluation boards some time ago at profusion , the 2024 mini and the 2021b.

Comparing the 2024 to the stock t-amp board it sounded better straigth away. Like already said, more bass due to the larger input caps. I also got the feeling they needed less burn-in time and sounded less shriller from the start (possibly they've already got some burn-in time one them already, which makes sense as they are evaluation boards, aimed to sell the tripath chips?)

Same with the 2021b, although I keep missing the defined clarity of the 2024's sound. Like described in another thread about the 2024's 'magic', the two chips absolutely sound different.
Now I'm very curious, (opentop?) what's the difference between the 2020 and the 2024 based board, especially concerning the highs?


About voltage:

I ran both of the same voltage 4A PSU @ 13,8 V. The 2021b max takes 16V max (I'm running that one now). I ran the 2024 mini board with additional heatsink, which caused no problems.

Anyway, unfortunately, the evaluation 2024 mini is dead now, I killed it after 100+ hours with *ahum* wrong polarity. Damn.

The 2024 takes 13,2 max officially but uptil now I was very confident 13,8V was no problem. Until a t-amp 2024 died on me last week (my succesfully input modded t-amp which also had about 100+ hours on it, Boohoo) for no appearant reason. While listening, 1 channel died, I switched off, came back again, then died for good.

Now, (before I consider buy another evo board I'm a little hesitant using the 13,8 V again.
Or should this just be debet to the bad quality t-amp boards?

The overal quality of the evalution boards tempts me to buy again, but it's about the price of three t-amps right now. (while Profusion raised their prices in the mean time !)
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Old 30th May 2005, 07:42 AM   #17
opentop is offline opentop  Netherlands
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Well dgo,

Sorry to hear about your T-Amps/2024's gone astray. I had two T-Amps and in the end they also broke down. I now use the 2020 EB's without any problems so far. And about the highs: as far as I can tell, they sound as brilliant as the highs from the T-Amp. And 13,8V will cause no problems. As I recall it, their specs lie somewhere between 12 and 14.2 V.
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