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don't trash your TEAC UD-H01 DAC, pimp it!
don't trash your TEAC UD-H01 DAC, pimp it!
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Old 7th February 2019, 04:38 AM   #61
mige0 is offline mige0  Austria
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Location: Austria, at a beautiful place right in the heart of the Alps.
Quote:
Originally Posted by cliffylfd View Post
is the 2068 your only other recommendation?

NJM2068M | NJM2068M New Japan Radio,, Op Amp, 27MHz, 8-Pin DMP | RS Components do the MJM2068 (DMP?)
Sorry for the typo, its the NJM2068 you linked, that I meant

The NJM2058 is even lower in noise than the stock NE5532 as measured by others and NJM opamps I value very high as IMO always being the best "audio" opamps, despite whatever their specs are.



Quote:
Originally Posted by cliffylfd View Post
Quote:
"But I already have plans to do a work around for the second stage using the 2x INA1620 each channel...
This might be beyond my skills
Actually it would not be that complicated.
But
It would require
- to buy two of the INA1620EVM boards from TI, which isn't cheap (but I already have them laying around)
- modify the boards as already shown above, which is an easy job
- squeeze the two boards into the TEAC, which might be quite a challenge

By the way, also the X7R ceramic bypass caps C7 and C8 on the INA1620EVM board have to be trashed, as they have a diametrical effect on sound quality adding a signature of "hardness".
Possibly replacing them with PPS caps would also do the trick - but I haven't tried them by now as the silver MICAs I have in place, do the job quite nicely
https://www.wima.de/wp-content/uploa...MA_SMD_PPS.pdf


So all in all I'm not sure if I will finish this INA1620 mod myself and it might be the saver route to just roll the NE5532

Last edited by mige0; 7th February 2019 at 04:53 AM.
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Old 7th February 2019, 06:22 AM   #62
cliffylfd is offline cliffylfd  United Kingdom
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Thanks mige0,I'll roll the op amps and see where you go from here......you might even upgrade from the Teac dac
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Old 7th February 2019, 04:00 PM   #63
weissi is offline weissi  Austria
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Michael, how much did you pay for your UD-H01? I found one for €199 on willhaben, but that is a little bit over what I wanted to pay for it. It's just that I wanted to start a little modding challenge with you
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Old 7th February 2019, 05:27 PM   #64
cliffylfd is offline cliffylfd  United Kingdom
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Weissi,
UD-H01 seem to holding it's price I am afraid,I was looking for a spare...just in case my soldering skills..or lack off,kill the one I have.
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Old 7th February 2019, 09:48 PM   #65
mige0 is offline mige0  Austria
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Quote:
Originally Posted by weissi View Post
Michael, how much did you pay for your UD-H01?
Too much

From current perspective, I would say don't go past EUR 100.-

For comparison, the SMSL M9 was on massdrop last time I guess about EUR 150-200.-. New!
And thats a much more modern DAC - though I'm not sure if its a good base for modification, given its all cramped SMD build.

The HIFImeDIY UX1 is $70,- and trashes the TEAC in many aspects out of the box!
HiFimeDIY UX1 USB DAC (Sabre ES9023) + SPDIF/USB converter
Sure, its just 24 / 96 but for MP3 web streaming for example simply a great choice


Quote:
Originally Posted by weissi View Post
It's just that I wanted to start a little modding challenge with you
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Last edited by mige0; 7th February 2019 at 10:06 PM.
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Old 22nd February 2019, 01:13 AM   #66
dalim0kumar is offline dalim0kumar
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HP sounds fantastic with LME49860!
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Old 24th February 2019, 03:34 AM   #67
dalim0kumar is offline dalim0kumar
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In HP section rolled LME49720HA (neutral) NJM5532( nice but grainy). Surprisingly OPA2104 sounding fabulous to me (little bass heavy).
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