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Old 1st November 2013, 08:02 PM   #1
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Default New HiFimeDIY USB Digital Amplifier

HiFimeDIY UD20 USB Digital Power Amplifier

Alright, I'll admit, I just want to be the first one posting about this. Since, I dont know about DDX, nor do I begin to understand the implications of PCM to PWM conversion.
The primary differences are USB input vs SPDIF, OPTICAL on the previous DDX320v2. Which is presently out of stock. Lower power output. 20W at 8 ohms vs 75/65 at 4 and 8 ohms respectively for the DDX320v2. Might be sufficient for the system I presently looking into. The output stage is a STA335BW, presumably a lower rung model compared to the STA510A on the DDX320v2. The USB receiver is a savitech SA9023. The DDX320v2 had a wolfson WM8805. The UD20 takes 24/96 from USB, compared to the 32/192 that the DDX accepts. It's stereo while the DDX is 2.1. Finally, it comes fully assembled in a case with a volume pot.
No word on the pricing yet. It says they will start shipping in the beginning of december on the site.
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Old 21st November 2013, 10:16 PM   #2
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It seems to be ready for shipping now, and it is priced at €60.25. I'll probably order one and compare it to the DDX320v2.
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Old 2nd June 2014, 06:55 PM   #3
fando is offline fando  Ireland
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Hi all,
I've been lurking on the forum for a while now - I admire your knowledge and work being done guys.

I was wondering if anyone was testing UD20/UD80. My question is: are these amps sonically a step up from say; 1) entry level NAD, Marantz Yamaha 2)himediy T1 amp+sabre dac? Thanks
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Old 9th June 2014, 05:18 AM   #4
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Quote:
Originally Posted by electropura View Post
It seems to be ready for shipping now, and it is priced at €60.25. I'll probably order one and compare it to the DDX320v2.
so, how does it compare to the ddx320
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Old 24th June 2014, 05:35 PM   #5
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Location: Cambridge, England
Hi Fando,

Sorry no one has replied to you.

I am very certain that the UD20 is an improvement to the list of amps you have mentioned.

It seems to be excellent value for money. If I was not busy on other projects at the moment, I would not hesitate buying one.
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Old 26th June 2014, 05:00 PM   #6
fando is offline fando  Ireland
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Thank you.
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Old 28th June 2014, 10:33 PM   #7
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All Hail the Great AMT Heil!

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UD20 USB stock, then upgrade!
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Old 28th June 2014, 11:26 PM   #8
kp93300 is offline kp93300  Malaysia
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Hello AudioLapDance,
You have so many amps and preamps !!!
How does the sound of UD20 compared to your TPA3116 amp ?
I am interested in the UD80 and would like to hear opinions before jumping in .
cheers
kp93300
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