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e_fortier 28th February 2010 05:12 PM

SureElectronics TPA3123
Hi Guys,

Has anyone purchased and tried this bords from Sure, it is based on TI model TPA3123. If so any comments...

2*25W @4? TPA3123 Class-D Audio Amplifier Board on (item 110497396432 end time 22-Mar-10 03:54:53 EDT)


e_fortier 1st March 2010 09:44 PM


Should I understand that nobody has worked with this IC or that the sound from TI chip are not good ?


theAnonymous1 1st March 2010 11:57 PM

I've used a couple of these low power TI class-d chips. I think they sound just fine; but I'm not a critical listener. I have a pair of BTL TPA3122D2 powering my mains right now (PhaseTech PC80).

I'm not a fan of SE outputs through output capacitors though. For the price of this board I would just get a low power Tripath amp.

lq_sunshine 30th June 2010 07:32 PM

I bought one of these amps and the have a very audiophile sound (the thd is very low when operated below 3 W @ 8 Ohm).I couldn believe.

Rikdee 20th May 2011 10:21 AM

Do these boards have any fuses on them? If not, what size fuse should i have to protect the board from shorting out?

lost eden 20th May 2011 11:26 AM

I bought one of these to replace the TA2024 2x15W board in my first boombox build, with the intention of getting more volume from it, but have yet to properly test it. TBH I think 50W is actually too much for the enclosure & it'll just rattle apart if I crank it... It's certainly not an audiophile testing environment anyway, a pair of car speakers in a flightcase on the beach!

becki200 20th May 2011 07:05 PM

Didnt buy the 2*25 Watt, they also sell a 2*8 Watt version with the same chip. And they sound good, yes. And they are very very cheap

kec 20th May 2011 07:47 PM

I've had my TPA3123 for a year or so. Sounds excellent to me.

macky 21st May 2011 01:37 AM

me too! here's my build:

lossfound 4th September 2011 01:16 PM

Not a lot of talk about the TPA3123 boards here so I will throw in my two cents. I have one of the Sure 2x"25"w TPA3123 boards, have had for nearly a year. I've only run this board so far with 12V power supplies. It sounds OK, but I don't know why you would choose this board over Sure's TA2024 board or similar. The 2024 sounds markedly better side-by-side on the same supply and costs a bit less. The TPA3123 board is noticeably harsher and hashier in the treble on most speakers than the TA2024 board, at least when running on 12V, and at that voltage it seems to offer no more power on tap than the 2024.

I recently picked up the Meanwell 24V/6A supply and one of Sure's TK2050 boards, and I'll be trying the TPA3123 board briefly on that supply to see if it does any better. But given the THD figures on the TPA3123 board at full "rated" power, again, if you were shelling out for a bigger supply I don't know why you wouldn't just go straight for the TK2050.

I had hoped the TI chips might be a step forward from the Tripath stuff since, who knows, the Tripaths might eventually become scarce at some point. So far, at least to my ears, they are actually a step backward.

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