the modding guide, sorry if the write up is not good enough, i tried
Attached at the end of this post (#2) are the guide for modding in pdf by our sifu
jazzy939 BEGINER STAGE-the easiest modding and makes the most difference will be the input capacitors, those thing covered in black.
get the best capacitor you can afford here, higher value will enhance the bass and roll off the highs, 2.2uf and 3.3uf are recomended here, non polarize.
-change the supply capacitor, those 2 small caps in the middle just beside ta2024 chip, higher value will enhance the charity and bass, low esr caps are recomended here, panasonic FM seems to fit this job well, 3300uf 16v will be enough, change both of them ofcause...
here a review from 1 of the guru here on power supply cap
QUOTE(Y.C. @ Sep 28 2008, 04:12 PM)
I had the opportunity to compare my own T-amp against my colleague’s T-amp last night when we were troubleshooting some buzzing sound together.
As mentioned previously, I have changed the 4 stocked caps of my T-amp to Vishay/ERO MKT 1813 2.2uF 63V polycarbonates and Panasonic 1000uF 16V electrolytics whereas my colleague has only changed the input caps to the same Vishay/ERO MKT 1813 caps. My T-amp is with a 24-steps 50K ohm Dale resistors attenuator whereas his an Alpha 50K ohm carbon potentiometer. PSU used is a 12VDC 2.5A SMPS, source a Sansui CD-X310 and transducers Q Acoustics 1010.
I would report the difference in sound of our T-amps described above as very substantial and prefer the unit with Panasonic
low ESR PSU caps. The overall tonal balance and scale of music is both more balanced and larger. The low frequencies have more weight and this adds to the foundation of music making. I would not describe sound as dry-sounding but contrary to this, we thought both T-amps sounded moist enough but we arrived at the conclusion that the stocked PSU caps must be replaced so as to attain a more balanced tonal back and a weighty foundation to low frequencies. There is no
pop/thud sound to both our T-amps.
these mod will probably be enough for some, but i bet most will not stop here as once you start modding it you dont wanto stop, the diferences are just amazing
ADVANCE-input resistor and gain resistor, smd component are never known for sounding good, the input resistor on the board are probably 5% tolerance, i measure 19.6xk to 19.8xk on them, changing to 1% metal film or better will improve the sound, espcially imaging.
-as you can see some biascap and others being change as well in the picture, not sure how much they effect the sound, jazzy939 did this mod in 1 shot and are quite surprise by it
-bypass cap for power supply, just beside the power supply cap, c6 and c7. good power supply make a noticeably difference in t-amp
-soldering copper wire directly from 12v terminal to chip, again, a good power supply is important in any amp, since the original root is quite thin in size, soldering 2 copper wire to the ta2024 pin will let the chip have plenty of power to work with, espcially with bigger panasonic FM in. sorry for the lousy pic, it is solder to pin 25,26,29 and 30
-output filter capacitors, c22, c25, c27, c28 (sorry no pictures yet), some say these are as good as changing the input caps, polyester 5% or better are recomended here.
-output filter coil, those 4 black thing, ferite coil gives dynamic and vivid signature to the t-amp, while aircore gives smooth and relax feels to it, up to the listener. other then that shielding the coil will make the amp sounding clean, haven try it tho, but good feedback from those who has done it.
bellow files belong to bro jazzy939, i upload it here for the convenient of others..
This post has been edited by xtorm: Jan 19 2009, 12:49 PM Attached File(s)
TA2024_mods_draft_STAGE1.pdf ( 1.35mb )
Number of downloads: 425
TA2024_mods_draft_STAGE2.pdf ( 1.4mb )
Number of downloads: 339
Nov 24 2008, 07:23 PM, updated 13y ago
Quote
.. replacing to bigger sized resistors and caps is in practice, dirtying up the sound and increasing the distortion figures.
both boards exhibit the same simptom. considered dead.
), white and blue LEDs, the famous jp volume pots - they have plenty of both linear and log types, you have to `debate' with them on the use of these before buying or they'll just give you the linear ones. 
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