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Post by julesd68 on Jun 1, 2019 21:51:17 GMT
It's a slippery road to follow Which road is that John??
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Post by julesd68 on Jun 1, 2019 21:58:46 GMT
If you just remember the basics, you can try to bring the D50 better matched into your system. Also, as Mike says, it needs to be fully burned-in and warmed up. - Power - Noise - Supports - Cables I leave my power amp on for 30 mins to warm up and the DAC is switched on at the same time. It shouldn't need any longer than that. Burn in I'm ignoring for now, I've no idea how many hours it has under its belt. I'm leaning towards it being power related as it sounds more of a 'profound' issue than supports or cables ... Can't comment on noise yet with the D50 but the D30 is exemplary without any extra gizmos beyond the power regen unit. Will do some more experimenting early next week.
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digititis
Jun 2, 2019 17:53:41 GMT
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Post by julesd68 on Jun 2, 2019 17:53:41 GMT
A question for you chaps.
If I was to purchase a lpsu with twin 5v output, are there any issues to consider with it powering both Digione and DAC?
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Post by MartinT on Jun 2, 2019 19:44:46 GMT
Inside the PSU will be only one transformer and one regulator. Therefore the outputs are shared and the 'dirty' output for the DigiOne will slightly affect the 'clean' power for the DAC. It should work well enough, but buy one PSU with a mind to upgrading with another one somewhere down the road.
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Post by julesd68 on Jun 6, 2019 11:09:01 GMT
An interesting session today.
The D50 is now powered by the original digione smps. An instant improvement on the powerbank, I think we can safely assume the D50 doesn’t like battery power!
The coherence and fluidity is back. First two tracks though, I’m struck by an overall lack of resolution on a couple of 80’s favourites, Starship and REO Speedwagon. The D30 did way better with these. Switching to a more recent recording, Jason Mraz’s ‘Geek in the Pink' everything suddenly springs to life. Makes me think this DAC is more revealing of source material? Moving onto Journey’s ‘Separate Ways’, it does a fab job with huge soundstage and deep, deep bass. Same experience with Scorpions ‘Coast to Coast’ remaster.
But, I still don’t think I’m hearing it at its best, or at least I am hoping I am not! I need more detail, resolution and cutting-edge in the upper-mid and treble. This is confirmed when I move over to the superb Nelsons Shosta 10. The Rachel Podger 4 Seasons has less congestion and more separation between instruments on the D30.
So the jury is still out for me on the D50. I was going to buy a decent lpsu for it the other day but on hearing about the Allo Shanti I will hold fire and see what the price is before pulling the trigger on either.
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Post by Slinger on Jun 6, 2019 12:15:54 GMT
I wonder if it's anything as simple as the amount of current the D50 likes. Any idea of the current put out by the two power sources you've tried, Jules?
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on Jun 6, 2019 12:35:13 GMT
Jules
Would you like to loan a psu that will suit the D50, also how are you connecting it form your digi one? / transport?
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digititis
Jun 6, 2019 13:32:56 GMT
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Post by julesd68 on Jun 6, 2019 13:32:56 GMT
I wonder if it's anything as simple as the amount of current the D50 likes. Any idea of the current put out by the two power sources you've tried, Jules? Hi Paul, the Allo SMPS is 3A and Powerbank 3.1A. I have looked at lpsu with max 3.5A. Not sure about the one I was thinking of buying so will ask. I believe the new Allo product is 3A. No idea if current is a factor here!
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digititis
Jun 6, 2019 13:33:55 GMT
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Post by julesd68 on Jun 6, 2019 13:33:55 GMT
Jules Would you like to loan a psu that will suit the D50, also how are you connecting it form your digi one? / transport? That’s a nice idea Tony. Most kind of you, as ever, will drop you a PM. I’m using a very decent Oyaide coax cable between digione and the Topping.
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Post by MartinT on Jun 6, 2019 14:07:24 GMT
The Pi with DigiOne or Kali idles at about 0.6A so there is plenty of headroom with any PSU rated around 3A.
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Post by julesd68 on Jul 2, 2019 16:25:29 GMT
Many thanks to John for bringing over his new Topping D70 DAC chez moi this afternoon ... A very, very interesting session indeed, I just need to gather my thoughts as there was a lot going on!
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Post by John on Jul 2, 2019 19:19:08 GMT
I have a few thoughts Jules DAC is pretty good and for the time being, might be worth keeping. The Sonus Faber do pretty good bass. But I might of scared Jules and his neighbours, due to the amount of rattling it caused to doors etc The D70 sounded great in his system with rock and orchestral music. However, solo piano sounded muddy. I think this is down to issues in the chain and might not be an easy fix. I think Jules need to think very carefully before making his next step if he makes it all as Jules really enjoys his system First of all we played Separate Ways by Journey It has been a while since I heard this. For me, the D70 adds a lot more depth and resolution to the track. We also played a modern song that is really well recorded it sounded good on Jules DAC and great on the D70. Sorry, I do not know the name. Next was some Orchestra piece I did not know and that sounded excellent. The 3 solo piano pieces just sounded muddy
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Post by MartinT on Jul 2, 2019 20:16:10 GMT
What was the source? CD, Spotify or something else?
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Post by John on Jul 2, 2019 20:17:57 GMT
Spotify so a supercaped PSU would help with that
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digititis
Jul 2, 2019 20:19:57 GMT
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Post by julesd68 on Jul 2, 2019 20:19:57 GMT
Thanks John!
So the question was how would the D70 compare to my D30? I hooked up the D70 to my passive using same cables as the D30 and with a bog standard kettle lead.
Firstly, I played John a couple of tracks with the D30 so we both had a good reference point. Opening track was a favourite of mine, ‘Separate Ways’ by Journey. It’s pretty damn good for an early 80’s recording but John noted it sounded a little compressed and I had to agree. So we moved onto to a more modern recording, Mr A-Z by Jason Mraz - not my usual kind of music but it’s a superb recording. We both thought this a big step up in quality - very dynamic and easy to follow the mix of instruments. Immediately went to the same track on the D70 and the differences were not difficult to spot - bass digs a bit deeper, there is more clarity, attack and bite to the midrange; improved dynamics too. A bit more of everything you might want. Next up we tried an Yngwie Malmsteen track which is a great favourite musically but as a recording it only sounds ‘ok’ with the D30. With the D70 it fared worse, much worse, sounding like it was recorded by Fisher Price in a wind-tunnel. It became patently obvious that the D70 is MUCH more critical and revealing of source.
It was John’s turn to choose something next and he came up with ‘Arsis’ by Gordian Knot. I’ve got to say it scared the shit out of me. The bass was so prodigious and low, that I could hear my frickin’ front door rattling! I kid you not. John felt that whilst my speakers were doing well with depth of bass, the higher instruments in the mix could have been better defined in my system. He knows the track very well so I’m not going to disagree!
Next up I wanted to see how it fared with my favourite classical test track, the live recording by Andris Nelsons of the Allegro from Shostakovich 10. It sounds epic on the D30 but here it went up a worthwhile notch or two, bringing even more sparkle out of this stunning track. John is going to try this track out on his system to see how it fares. Finally I wanted to try some solo piano, and this is where things started to fall apart. I tried three favourite modern recordings, but each time the piano tone and timbre was just not right, sounding rather muddy and murky. So I need to investigate why this might possibly be. John spotted the horrible jumble of wires behind my kit and thought this could be an issue. I have *very* little room to work with, so it’s really difficult to be neat, but what I’m going to do is to remove all the cables associated with my analogue system which is just not being used at the moment. After removing them I will do some further tidying to try and separate the cables. Will be interesting to see if this improves things.
Conclusion - the D30 is superb VFM but the D70 is a very decent step up for a relatively modest price (around $499) but it WILL show up any issues with your system, so I have some detective work to do. I really feel that when I buy the D70 I am truly going to be opening up Pandora’s Box!
Thanks again to John for an excellent session.
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Post by jandl100 on Jul 2, 2019 20:36:01 GMT
A definite step-up from the D30, but seemingly less critical of poorer recordings than the D70 is my Benchmark DAC1. It's a fuller, bolder sound than the D30 and might well be worth looking into, Jules. It's the best DAC I've had in my system by a fair way and can be found used around the £500 mark.
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Post by julesd68 on Jul 3, 2019 0:00:31 GMT
Yes that's certainly an option Jerry!
Before upping the rez any further I want to try and work out what is going on so I can fully enjoy the system.
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Post by John on Jul 3, 2019 3:50:24 GMT
The bass track for testing out how the bass is interacting with Piano and Drums is
Another scary bass track that also rattled Jules front door.
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seanm
Rank: Trio
Posts: 169
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Post by seanm on Jul 3, 2019 5:04:06 GMT
Gentlemen,
Thank you for the interesting read.... I do like a good detective story.
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Post by MartinT on Jul 3, 2019 5:29:31 GMT
Conclusion - the D30 is superb VFM but the D70 is a very decent step up for a relatively modest price (around $499) but it WILL show up any issues with your system It was not for nothing that I wrote this and your system is yet another example, Jules. I've been through the journey and come out the other end, but an increase in resolution without taking care of other issues just shows them up more obviously than before. theaudiostandard.net/thread/4972/pursue-hi-res-caution
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