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Class D Switching Power Amplifiers and Power D/A conversion

Hypex UcD best upgrade ?
Hypex UcD best upgrade ?
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Old 24th November 2013, 11:51 AM   #11
doctordata is offline doctordata  Australia
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Hypex UcD best upgrade ?
Quote:
Originally Posted by r100 View Post
hi

I have 1 SMPS 400, 2 UcD 180hg amps

what would make the biggest difference in sound quality?

- second SMPS400 ? 80 EUR
or
- two HxR regulators ? 60 EUR

thanks
Could be depending on the rest of your stuff , in front of your Ucd and probably more what's on the output .

Cheers ,

Rens
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Old 26th November 2013, 05:29 PM   #12
r100 is offline r100
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thank's all, I ordered the HxR's
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Old 26th November 2013, 05:31 PM   #13
r100 is offline r100
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Quote:
Originally Posted by zman01 View Post
I'm with vacuphile on this - treat yourself to some good music!

No experience with HxR, but have 2 x UcD 180HG with 1 x SMPS 400 too, and like the sound a lot.
just out of interest, how did you connect the two amp to the single SMPS ? do you have a photo ?
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Old 6th December 2013, 10:46 AM   #14
r100 is offline r100
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hi,
just put the HxR modules onto their respective slots on the amps and noticed that they are very loose... they actually wobble around quite a bit. Is there a good way of making them sit more firmly ? do they have to be soldered ?

Last edited by r100; 6th December 2013 at 10:51 AM.
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Old 6th December 2013, 07:46 PM   #15
r100 is offline r100
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ok, found out myself .. they are soldered on .. wow that was quit stressing ! but all four HxR's are lighting up
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Old 6th December 2013, 08:17 PM   #16
saurama is offline saurama  Finland
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Quote:
Originally Posted by r100 View Post
ok, found out myself .. they are soldered on .. wow that was quit stressing ! but all four HxR's are lighting up
How does the HxR-version sound compared to basic HG?
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Old 6th December 2013, 09:05 PM   #17
r100 is offline r100
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Quote:
Originally Posted by saurama View Post
How does the HxR-version sound compared to basic HG?
yes, I was just thinking of posting my first impressions. The amp has been running for about 4 hours now. I have been around and about during this time listening to the music on and off. Listening to a 128kbs stream from SomaFM.com and a 192kbs stream from radioparadise.com through a Pioneer N-50, KefLS50 combination. The pre is a simple Alps Blue pot.

At the beginning of the session I had the impression that the sound in the upper frequencies was a bit harsh. Maybe a psychologic effect I don't know since I was quite exited that the four little regulators did light up like tiny christmas trees. The soldering was ok ! Thank G for that.

After a couple of hours and a beer or two the sound really comes across as very pleasant. It is precise and warm at the same time and gives the impression to be more "stable" or "consistent" than prior to the update. There is definitely "more" (density ?) to the sound with the HxR than before.

So, yes i am very happy with the upgrade. Best of all, it seems that these two tiny, 15grs pieces of electronics remove the need for a huge expensive and heavy power conditioner
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Old 6th December 2013, 10:37 PM   #18
r100 is offline r100
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more impressions: I have been listening to Nora Jones for the last hour or two. I am hearing nuances and subtleties that I have never noticed. Another example is a song from "The badly drawn boy" - "Everybody is Stalking" which starts of with a snare drum vibrating in the background... I had never noticed it before.

Last edited by r100; 6th December 2013 at 10:39 PM.
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Old 7th December 2013, 07:35 PM   #19
r100 is offline r100
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best cash I've spent in hifi in a long time.. the diminutive little HxR have got the amps singing !!!
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