CnoEvil said:
Gareth, how are you getting on with your Renew DS.....are you getting to the bottom of what is going on?
Hi Cno,
Yes, the plot thickens a little . . .
I got the hard wired connection working as I think I outlined in a previous post. I also tried various cable changes including some £350 XLR cables and some RCA's to see if the different connection made any difference. I noticed a slightly different sonic signature with the different XLR's, but too small to tell whether it was real or perceived, and it was just different, not better. RCA's were very very close also, maybe just the slightest rounding off of the finest details, so essentially very slightly worse than via XLR. (Incidentally I also grabbed the Lumin iPad control interface - significantly better and easier to use than Kinksy!)
Switching back and forth between the Sonos (remember, via digital coax into the Primare SP32, not using the Sonos DAC) and the Klimax Renew (analogue out from the Renew into the SP32), by teeing up the same track on both systems (which makes for very good and quick A-B testing) over a number of tracks and probably 5-6 hours of listening, there was still only perhaps 10-15% improvement with the Renew over the Sonos/SP32.
As I said before, the Renew provides better rythm and timing and makes music more engaging and 'foot-tapping', there is a slight increase in detail and seperation of instruments and vocals, and a thinner more neutral but defined sound (possibly a little too thin) through the lower mids and bass, where as the Sonos/SP32 is more full bodied in the lower mids and bass (but probably too much so, making tracks a little bloated and muddied in that region). I also download a few hi-res albums from the Linn store, and tried those - they sounded incredible through the Renew, probably the best I have ever heard an acoustic guitar through my system. Whether that is the better mastering or the 24bit file type is for another discussion, but it certainly sounded very very good!
So, by way on conclusion, all I could deduce was that the DAC in the SP32 (which is not a cheap bit of kit at £4k) was bringing the performance of the Sonos up close to that of the Renew - which kind of makes sense given that all the Sonos is doing is pulling the digital file from the server, decoding it, and spitting it out (still in the digital domain) to the Primare. The dealer I bought it off agreed that this was more than likely the case also. It seems that most people who have compared the Sonos to the Renew/Akurate/Klimax, have (understandably) done so using the Sonos's internal DAC, where obviously you would expect a huge difference given that it is a £279 device.
Clearly, to me, where the performance differences appear to be the greatest are where different DAC's come into play. Which got me thinking . . . what sort of DAC could I get with the money I had spent on the Renew, and would using this with the Sonos give equal (or better) performance than the Renew? My plan was therefore to home demo a Chord QBD76 HDSD DAC to see whether it could close the gap on the Renew, at a cheaper price.
However, yesterday I took delivery of a NAD M51 DAC demo unit, (though I still plan to get a demo of the Chord QBD76 HDSD DAC also) following a very strong recommendation to try it. To be honest though, at £1500 before discounts I wasn't holding out too much hope.
After hooking up the M51 I spent a couple of hours doing A-B testing with the same tracks, between that (Sonos/M51) and the Renew, both via XLR into the Primare . . . . All I can say is 'Wow!', I was more than a little surprised and impressed - the M51 is quite something - in my system it gave a decent step up over the Renew, perhaps to a similar extent than the Renew did over the Sonos/SP32. The M51 revealed detail in the tracks that the Renew simply didn't recover - it gave a clearer sense of the acoustic space the artists were performing in; there is a natural audible decay and reverberation to the instruments and vocals that is clearly there in the recordings that the Renew simply didn't resolve. It also added even greater separation, detail and texture to vocals and instruments than the Renew achieved, and added significantly more three dimensional depth to the sound stage, whilst really striking the ideal tonal middle ground in that lower mid/bass region - fuller and more balanced than the Renew, and tighter and more defined than the Sonos/SP32.
As I say, I was more than a little surprised, and took the demo really only on a recommendation. I certainly didn't expect it to best the Renew, but hoped merely that it might close the gap a little.
Given its £1500 price tag, the fairly extensive feature set (HDMI inputs, re-clocking etc) compared to most DAC's, and of course the incredible sound quality I experienced last night, it's an absolute steal.
Needless to say, the I have decided to send the Renew back for a refund, and will be getting an M51. With the £2,500 change, I will probably get the matching M50 streamer that is due out shortly, which will give me 24bit streaming and possibly another step up in sound quality over the Sonos - plus I'll still have change!
Don't get me wrong, this has been a pleasurable experience, and a real eye-opener to me, on the huge importance of the DAC in a digital streaming set-up. The Renew is a fabulous sounding piece of kit in its own right, and for someone adding this to a system with lesser DAC's, the improvement will be substantial. But given the existence of the M51(and possible other DAC's out there up to the value of the Renew/Akurate), one has to question the value for money of the Linn offering - and that is even without considering the full price Klimax DS.
Many thanks for all your help Cno (and others), as always, the journey continues...
- Gareth