Gustard R26 - different sound signatures in different units


The Gustard R26 was recommended to me this year by reputation through a guy who hadn't heard it but knew people he trusted who recommended it. 

Now I've listened to a few R26's now with mixed results. It's been a journey and I made some dumb mistakes by not paying close enough attention. 

The first R26, new from Amazon, sounded dull and uninteresting, not extended on top. I was driving it through USB. I exchanged that R26 for another one, which sounded similar, but then I discovered driving it from the U18 DDC through coax (I have a very good coax digital cable) and the sound signature was totally different.. lively and extended on top. 

Then I found a used R26 on EBay for much less than I had paid for the new one from Amazon, so I returned the one to Amazon and purchased the one from EBay. It sounded brighter than the one I had returned, but at first I didn't mind. Maybe was more detailed. Strangely, the display had a micro font compared to the first two I had.

For a time I didn't do any serious listening. I was more involved in my piano playing and composing hobby. I eventually went back to the R26 I got from EBay and realized it was much too bright. I wondered if it had old firmware, given the micro font on the display. I tried upgrading the firmware, but there was no change in the display or sound.

I ordered another R26 from Amazon. This one sounds completely different than the one I got from EBay. It has about 120 hours on it so far. The problem is that it has shrill/unpleasant sibilance. I'm not saying it's particularly bright. The R26 from Ebay is brighter yet doesn't sound shrill. So the this new R26 probably still has some burn-in time needed, but the shrillness hasn't diminished at all over the first 100 hours. Maybe it's even worse.

Anyone have a similar experience with any of these?

magon

I don't think we can make generalizations based on a bad unit.  There are too many rave reviews on the product.  Is it perfect? No, it's a $1500 dac. But, many reviewers believe it competes with more expensive dacs. 

System matching also plays a role. 

@sls883 Yes I've tried all menu settings on all units. The basic sound signatures didn't change. 

The one I got from Ebay had a very tiny font on the display and it put all options on one page. The other ones had a larger font and put the options spread among two pages -- you scroll down to the second page. I tried updating the firmware on the one with the tiny font but there was no change.

I noticed that the new price on an R26 has dropped a lot from about $1650 to $1450 in the time I've been exploring it. Not sure if this indicates a drop in review quality or excitement in general about the unit.

Mine has the tiny font. I updated the firmware and I thought it would enlarge the font, but it didn't. 

I suspect the price drops are a result of competition and the fact that their development costs are covered. And like you said, it's no longer a new exciting product. 

Maybe they've made product changes over time. I don't know.  I suppose anything is possible. Gustard will reply to emails if you send them one. It would be interesting to get their opinion on what might be happening. 

For every DAC I had 100 hours break in is nothing. Most of them need more than 200 hours of playing music plus 3 weeks be plugged in.

 

I received a new r26 2 weeks ago. It started sound just OK after 1 week (160 hours) and high frequencies oped up after 10 days. And the sound is still changing...

You got one r26 and didn’t like it. So you decided to pick one more up. Now you have two DACs you don’t like. 
For that price you could have purchased a really nice non Chi-Fi DAC.