UT LAW
I do not know how much of what Marbles wrote you will understand,but this might help.
smART and MENSA DAC's are names given to the ART DAC's after they are Modified through Wayne at BOLDER CABLES.
Seeing that you are new at this I will tell you what my experiences are and why you lucked out by coming here.
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First off I have been an off\on audio buff for approx. 25yrs and what I realised about 15yrs. ago is that you get more bang for the buck by buying stock units that have a good capability for bing upgraded using better parts.If you think of the old Phillips CD Player's ,other manfactures like WADIA(I think)\MADRIGAL would take the stock Phillips Transports and DACS then replace them with premium parts and cosmetics then sell them for outrageous prices to the consumer ,you and me.
You are able to get close to SOTA performance or actual SOTA performance,depending on who you listen to,for a greatly discounted price
going the Modified route.
Other things you might want to checkout are Dan Warrens Mods listed as ModWrights here at AC.He does Mods to Pioneer CD Player's which are suppose to be superior to stock versions.Using his Modded Transport with the MENSA which might be an option if you are looking for a quality CDP\DAC combo.
I have had my speaker's and amp modified and would have to spend $3-$4K for which I paid $1K for them.So the savings and performance ratio is quite large
This can be a most rewarding and fun hobby if you go about it right and do your homework and I think there are great advantages to getting modded equiptment.
The smART\MENSA DAC is said to be a better DAC then the SONY 777 CDP's DAC that goes for $3K so that gives you an idea of the savings that you can expect when looking to go this route then following the consumer crowd!
Good luck and any Q's don't be afraid to post here or anywhere else as there are many people that love to help it's there hobby and somes bisiness.
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One last thing is that .You had mentioned that you wanted to go the purist route.You will find my system listed here and I have been redoing my system.The FT Audio Preamp is a great bargain and you'd have to spend alot more $$ to find equal quality.There are things to know when matching with an amp .Listed is FT Audio's site and Paul Lam will answer any Q's you might have if you wish to go that route.Tell him Larry sent you .
If you need a unit with remote capability do not let it deter you that it does not have one because I know they are working on one that should come out soon and you will just need to add it to the existing unit by plugging it in.
My system
http://cgi.audioasylum.com/systems/3684.htmlFT Audio sites
http://www.ftaudio.com/FT Audio BB
http://harmonicdiscord.com/forums/viewforum.php?f=7&sid=Good luck and happy hunting!