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FS Quantity of five JLester TPA3255 and power supplies MAKE ME AN OFFER!
FS Quantity of five JLester TPA3255 and power supplies MAKE ME AN OFFER!
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Old 21st April 2021, 09:13 PM   #1
stretchneck is offline stretchneck  United Kingdom
diyAudio Member
 
Join Date: Mar 2018
Location: Oxford
FS Quantity of five JLester TPA3255 and power supplies MAKE ME AN OFFER!
Default FS Quantity of five JLester TPA3255 and power supplies MAKE ME AN OFFER!

Up for sale, a total of five pairs of unfinished TPA3255 amp boards and power supplies. All brand new. MAKE ME AN OFFER!

Each pair includes
One TICORE260BTL TPA3255 STEREO PFFB 48V (PARTIAL KIT) AMPLIFIER MODULE with the four premium coilcraft VER2923-103KL inductors installed.
One AliExpress 800w 48v low noise power supply (KAYPW Switching Power Supply Light Transformer, as used by XRK on his builds)

FS Quantity of five JLester TPA3255 and power supplies MAKE ME AN OFFER!-tpa3255-board-jpg

FS Quantity of five JLester TPA3255 and power supplies MAKE ME AN OFFER!-800w-power-supply-jpg

To complete each amp board all you needs is:
One ATS-TI1OP-519-C1-R3 heatsink (available on mouser, costs just over 5)
2 pcs OPA1656 or LME49860 on SOIC-8 to DIP-8 adapter ENIG PCB - readily available on the internet
4pc tank caps: 1800uF 63V low impedance (e.g. panasonic EEU-FC1J182, about 2 each)

Plus other ancillaries and chassis etc... which are not included.

You will need to make the following easy amend to the boards as TICore260BTL Version "V1A" has a small fault that when right channel exceeds certain power output, the module goes into protection mode. This is overcome by lifting C17, then connect the ground of C17 to ground plane on C16. (Picture attached)

Good performance from these. Any questions please ask.

Gavin
Oxford, UK
Attached Images
File Type: jpg TPA3255 board.jpg (163.9 KB, 331 views)
File Type: jpg 800w power supply.jpg (98.1 KB, 327 views)
File Type: jpg BTSB-Bal-Input-Noise-Floor.jpg (162.3 KB, 299 views)
File Type: jpeg fix.jpeg (764.1 KB, 97 views)
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Old 22nd April 2021, 09:40 AM   #2
reddish75 is offline reddish75  United Kingdom
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Join Date: Aug 2006
Hi Gavin,

Shoot me a price via pm for one that I can't turn down.

Regards

Chris
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Old 22nd April 2021, 01:03 PM   #3
reddish75 is offline reddish75  United Kingdom
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Join Date: Aug 2006
Should have asked this before, can a pre be used with these?
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Old 22nd April 2021, 01:06 PM   #4
stretchneck is offline stretchneck  United Kingdom
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Join Date: Mar 2018
Location: Oxford
FS Quantity of five JLester TPA3255 and power supplies MAKE ME AN OFFER!
Yes of course - active for, perhaps better a passive
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Old 22nd April 2021, 01:17 PM   #5
reddish75 is offline reddish75  United Kingdom
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Join Date: Aug 2006
Would be an active, a Sony ta-e901 just for testing.

Did you have a chassis in mind for these?
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Old 22nd April 2021, 01:52 PM   #6
stretchneck is offline stretchneck  United Kingdom
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Join Date: Mar 2018
Location: Oxford
FS Quantity of five JLester TPA3255 and power supplies MAKE ME AN OFFER!
The amp modules will work with any preamp, but some active preamps may have too much gain (meaning only using a small proportion of the volume range available). Perfectly fine for testing though. Passive preamps can also be sourced very cheaply, you can also use software volume control (but be careful).

Chassis - Cheap ones from RScomponents or Audiophonics (probably not as popular now that Audiophonics require a minimum order of 150 post-Brexit).
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Old 23rd April 2021, 10:17 PM   #7
stretchneck is offline stretchneck  United Kingdom
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Join Date: Mar 2018
Location: Oxford
FS Quantity of five JLester TPA3255 and power supplies MAKE ME AN OFFER!
3 pairs sold - 2 remaining
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Old 24th April 2021, 06:30 AM   #8
stretchneck is offline stretchneck  United Kingdom
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Join Date: Mar 2018
Location: Oxford
FS Quantity of five JLester TPA3255 and power supplies MAKE ME AN OFFER!
By the way, PSU is 170-250v, so no good for America. But I will sell the amp modules separately.
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Old 26th April 2021, 11:01 AM   #9
stretchneck is offline stretchneck  United Kingdom
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Join Date: Mar 2018
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FS Quantity of five JLester TPA3255 and power supplies MAKE ME AN OFFER!
1 pair left!
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Old 26th April 2021, 12:15 PM   #10
ml48 is offline ml48  United Kingdom
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Join Date: Nov 2007
How much would the last pair cost sent to West Sussex,thanks.
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