new year's goodies - mixing NDX+XS2 into 172/200DR/S400
Posted by: catalinmetal on 04 January 2016
hello everybody and a happy new year from Bucharest!
this turning of year brought me some extended listening session with 2 (already) classic Naim products: the NDX and the Nait XS2.
as some of you know, (and is stated into the title of the thread) my own setup consists in 172+200DR+OvatorS400 speakers, with Naca5 cable and Fraim lite.
for starters, i thought to give the NDX and XS2 a short warm-up before getting to some real comparisons and mixes, and i immediately noticed the following (NDX+XS2 vs my own 172/200DR):
- superior step in refinement and resolution: seems the NDX punches way-way above the streamer + DAC existing into 172, and after all, it is no wonder! i enjoyed the textures of the instruments and voices, and particularly the acoustic guitars sounded really really wonderful.
- the whole tonal balance was getting a few degrees warmer. on some albums, this was a treat.
- the sound was slightly fatter/rounder. at this stage, i could not really tell if this is dued more to NDX or XS2.
- the bass control was slightly lacking, even though there was more bass, it was less controlled, not damagingly uncontrolled but anyway, easily spottable
- better separation at "crowded" passages, like on heavy metal records. easily to put the blame into limited capabilities of the DAC inside 172
after days passed, i could make the following mixed combos:
1. NDX+XS2+ chord power cables
2. NDX+PS audio AC12 power cable + XS2+ chord power cable
3. NDX+AC12+XS2(as preamp)+chord+NAP200DR+chord
4. NDX+AC12+172(as preamp)+chord+NAP200DR+chord
5. 172(full)+chord+NAP200DR+chord
6.+7. NDX+XS2(or172) as pre+ 200DR with PS audio AC12 at preamp level
8. NDX+chord+XS2 as pre+chord+NAP200DR+AC12
some short descrition of the most important differences:
- AC12 power chord seems to have similar effect at all 3 levels, (albeit with slight different amplitudes), it does increase the resolution and precision, and somehow "purifies" the sound making ot "cleaner" or more free of distorsions, BUT, with slight loss of musical flow, not great but easy to sense...
- swapping back and forth from 2 to 3, the 200DR revealed a bigger and more dynamic sound stage, better resolution, BUT, the power amp section of the XS2 is admittedly, more "friendly" , has a rounder/warmer sound, and is more forgiving to bad records, and it has a ease of musical feel that actually made one of my friends visiting to prefer the setup without the added 200DR. i wound say that if performance and neutrality is desired, then the added 200DR makes the thing, if just sheer musicality, the XS2 is a good and fluent performer in itself.
-swapping back/forth from 3 to 4, more tricky comparison, since i think the performance in itself was rather in the same ballpark, but with a slight different character: the XS2 preamp is like it's power amp, rounder in presentation, and has a slight superior musical fluence, while the 172 (as preamp) tends to be more precise, more on the spot, and while feels more solid, is also slightly more inexpresive compared to XS2 preamp. in the end, i preffered the XS2 preamp to 172 preamp, but on sole ground that i found it more pleasant... i will retry this test in the following days, see how it gets...
- from 4 to 5, it was obvious that streamer+DAC inside NDX is way superior to the ones in 172... here no doubts about... does it worth the extra cash? if you have it, it probably does. i am very fussy with sources and the NDX wound have been for a while my companion if i could afford it in a setup that would do it justice (FWIW i think that - let's say a 152/200DR/s400 really starts to bring the goodies out of NDX, since no 152 in this session, a XS2 as preamp will do in the following days)
- probably the best so far combo, to my taste, was no 3... since i will have the NDX and XS2 for the next few days at home i will probably make further comparisons, since i really enjoy having as many Naims in house as possible and swapping between them
- i cound not compare the streamer sections of NDX and 172 since the 172 has no digital out... i haven't compared strictly the DAC sections of NDX and 172, since i do not have at home a BNC to RCA adapter, nor a coax BNC digital cable... but i don't expect weird results on this one, the superiority of the NDX comes from it's better DAC, no doubt.
- also tried some PCM 24/96 files vs the same recording in DSD64... to me the differences are rather of colouration, and not only performance wise... like the DSD record was slightly "sweetened" to make it sound rounder and nicer... after all, most of market's DAC are multibit, so no one really offers pure DSD decoding (which will really assume a 1 bit DAC, or rather, a filter, as also no pure DSD encoding of mixed material actually exists (all mixes are done in high rate PCM, and then back to DSD). we can encounter however pure DSD recordings if some analogue recordings are transferred "as is" onto DSD format. if a mixing stage is involved though, at least one high rate PCM conversion is needed. (so DSD is - for now - rather a gismo to me, we will see in the future how it fairs)
that's it for now, more goodies in the following days! since i will keep the "things" for a few more days...