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Group buy: TPA3251_TPA3255 Amplifier board and ADAU1701 DSP Pre-Amp board
Group buy: TPA3251_TPA3255 Amplifier board and ADAU1701 DSP Pre-Amp board
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Old 23rd October 2019, 08:16 AM   #301
Audio Mo is offline Audio Mo
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Join Date: Jan 2019
Originally Posted by grahamgraham View Post
What is the power consumption of this DSP board, please? I folishly assumed it ws a 5v board but it shows it is 7-12v. How many amps is needed to get this running?

I have ordered two from ebay.


200ma, I see. But no way to power the board via 5v other than the Micro USB. Hmm.
You can power it from the amp auxiliary power supply 12v.
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Old 23rd October 2019, 12:45 PM   #302
grahamgraham is offline grahamgraham  United Kingdom
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Join Date: Oct 2016
Location: London
Originally Posted by Audio Mo View Post
You can power it from the amp auxiliary power supply 12v.
Thanks, I have only ordered the DSP boards, tho.

Where is the best place to get support for this item?
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Old 17th November 2019, 05:52 PM   #303
joehung is offline joehung
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Join Date: Nov 2019
Originally Posted by Rolandooo View Post
Hello everyone, I have been playing around with Sigmastudio trying to configure the file crossover to get better quality for my speakers and I question if have bricked my ADAU1701.

I downloaded the DSP source file from 3e-audio website, opened it in Sigmastudio, correctly installed USBi Drivers, and made small changes and link download. I think where I messed up is when I wrote to the E2prom because now I cannot get anything out of it. I noticed that the LED in between the volume and treble pots will light up briefly when I reboot and turn off within 2-3 seconds after it powers up. I have another board that I have not touched and this LED stays powered the whole time.

I cannot find anything in the manual about this LED - Anyone have this happen before?

After hours of playing around with it, I noticed when I write the 3e DSP file to E2prom and "check last compilation vs E2prom" that I get a communication error. I have a hunch that have an issue with using Windows 10 and USB 3.0 ports (is that still a thing with newer Sigmastudio?) I even played around with the "disable USB 3.0/win10 fix" in SS with no avail.

Any help or input would be appreciated.

Did you find the solution? I got my ADAU1701 from 3e this week and I encountered exactly the same problem after writing to E2prom. The LED lit up briefly after powering up, and a communication error from "check last compilation vs E2prom".

My laptop does have USB 3.0 ports. I guess I'll have to dust up my old desktop (w/ 2.0 ports) and try again. Just want know if you've solved this issue. I also emailed 3e and have not gotten their reply yet. Thanks!
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