Responses from richardmathes

Fathom subwoofers?
1) Deeper, more visceral bass.    2) At present, I'm confined by "domestic considerations" as to sub placement and size, as my system is located in a Living Room rather than a dedicated listening room. (The room is approximately 14 x 24, with tw... 
CD Transport with XLR Out
I'm using the IIS/I2S a.k.a., HDMI, input on a Matrix Audio Element X, fed from the same on a PS Audio CD transport. I credit the IIS as a significant factor in improved clarity. Just my take.  
I've had a Cambridge Audio and Audiolab. Both were capable. I noticed a quantitative difference with a used  PS Audio Perfect Wave Transport. I wouldn't consider any player without an I2S (HDMI) input. Best wishes.  
best SACD player
I bought a used PS Audio transport that radically improved the sound of all of my CDs, including SACD. I'd also argue for the importance of the I2S/IIS (HDMI) output on any CD player. (Of course, your DAC will have to have that input.)  
Dynaudio Heritage + Gold Note IS-1000 Deluxe
Two more cents: the Sugden's power is Class A, and comparable to that of the Pass Int-25. Just sayin'.  
Dynaudio Heritage + Gold Note IS-1000 Deluxe
I’ve driven a pair of the Dynaudio Heritage (as well as Sonus Faber Maxima Amators) with both a PrimaLuna Evolution 400, and a Sugden A21SE. The latter is a lesser known British integrated. There is a YouTube video comparing it favorably to the Pa... 
DAC for second system
Consider a Topping DAC.  
Budget re-cabling
If you're curious about going old school, look at 10 gauge Blue Jeans Cables at a little more than a couple of bucks a foot would be worth a comparison.  
Law Of Diminishing Returns?
The expectations curve keeps rising. Where does your friend go after spending $100K, and the old restlessness returns? $500K for that next 20% of satisfaction? Perhaps climbing the cost/benefit ladder rung by rung would be wiser.  
What should my heirs do to dispose of my vinyl and CDs?
There must be Discogs merchants who would be interested in extensive LP and CD collections (regardless of the cynicism of some elitist LP owners!) I'm wondering if there are affordable barcode scanners and software for the purpose of cataloging.   
What is the VERY BEST CD album you've ever heard?
Any SACD on a PS Audio SACD player. And standard CDs shine brighter as well. Agree with the above regarding Live at Fillmore East, and Take Five.   For the category of great live CD performance and mediocre recording quality, I would nominate De... 
What is the VERY BEST CD album you've ever heard?
"Ella and Louis"  
un-becoming an audiophile
What a healthy discussion. Thank you all.  
What speakers work with low wattage class A amps
My personal experience: I've driven a pair of Dynaudio Heritage Specials and a pair of Sonus Faber Maxima Auditors with a Sugden A21SE with the volume at 9 o'clock with no issues at all; that said, there is also a REM subwoofer in the system. The ... 
Tube amps - what 3 things…
Bias adjustment has been mentioned. Decide whether it is worthwhile for you to be engaged in that task. If you're ambivalent, a lower maintenance amp such as a PrimaLuna may be suitable. I've been happy with my Evo 400, and sleep soundly knowing t...