Well James, I was smitten by its looks and I simply had to have it ;-)
Actually, I did not actually purchase the Chord...it has been on long term loan until I can get a matching tube preamplifier built to match my custom power amps. The owner of the Chord bought it with its matching power amp in an attempt to upgrade from the Naim 112/150. Which it wasn't as the Chord preamp was not a match for even the low-hanging fruit of the 112. I remember plugging in the Audio Research LS25mk2 preamp in place of the Chord one, also into the Chord power amp and was taken by how much more the AR pre had to offer over the Chord in terms of extension, dynamics and projection.
Listening a bit more to the RSL preamp today after about 7 hours of warm up shows it to be further improving to a point that even 128kps streams are very satisfying to listen to as its compression artifacts seem less offensive than those of the Chord.
Here's an amusing anecdote....before the Chord preamp was borrowed, I had a cheap (maybe $200) Sony AV receiver hooked up between the NAT01 tuner, the CDS3 and the very large speakers I use. And it sounded warm, inviting and quite musical and I spent hours a week listening to 'Performance Today' etc on the tuner.
But when the Chord preamp arrived, I sold off the Sony on eBay within a week, just knowing that this blingy preamp coupled with my NAP500-beater power amps (and yes, I did compare these two side by side) simply HAD to be better than an entry level Jap receiver. Except it wasn't. The Sony receiver was actually more fun and more musical to listen to!. So I changed the tubes on the power amps....nope...still wasn't as good as the Sony. Got some Chord Anthem interconnects-that actually were significantly better than the Cobra ones I had been using. But still it could not match the Sony.
As YWOAN said above, the RSL to the Chord was more an A to Z comparison. Except that the price was more a Z to A-the Chord cost $5,000 back in 1999!!!!
But the reviews at the time were very favorable
http://www.stereotimes.com/amp110599.shtml
So is this a glowing testimonial of the RSL preamp, or an excoriation of the Chord...well, its both actually. In absolute terms the RSL ticks all of the right buttons and gets very deeply into the music, allowing it to flow without the impediment. I look forward to spending the next couple of weeks getting to know it better before it heads off to the Lone Star State.
I wonder if the next home demo-er will notice if he got a Chord preamp instead?