I also have Duelands Cast in my preamp. The JFX r small & lite. They
have slam & extension at both ends. They r spacious & airy. They may
lack the ultimate body of the Cast. For me, they seem a bit to 'literal' fronting my digital source, a Modwright Transporter. Hence I prefer the
'vocal prescience' of the Mundorf S/G/O. They do seem 'natural' & musical,
They pass what is fed 'em & instruments seem easily discernable within the
mix.
I lived w/all of the mentioned caps in my preamp. When I started to mod the conditioner, I used what I had. It was surprisingly easy to ID each caps
'signature', even though they r b4 the audio signal.
The Modwright Transporter runs both balanced transformer coupled out, &
capacitor coupled RCAs. I get the sense that the Transporter into pre w/Duelands caps via RCAs sounds much like the transformer balanced outs direct into my amp, a Yamaha A-S2000.
I've pretty much given up on getting the CuTF V-Caps to exhibit any sense
of air. Excellent tone & body but I haven't found a place where I think they
shine. I like the Sonicap Platinums as very musical & easy to listen, but
perhaps not as ultimately resolving as others. Clarity MRs r darn good,
neutral & well balanced, airy, but I didn't have enough room in the conditioner to pursue installing the larger values.
One needs to understand I compared all of theses, except the Duelands, in
the power conditioner. I mixed, matched, & rotated these 'dogs' over several months time. As I came to understand the tonal inflections &
character each brought to the filter/feeding of the digital, preamp, & amp
sections, I simply feel S/G/O 'plays well' on digital sources. It's a great cap. Killer vocals. Great soundstage. The JFXs take that & send it out via pre & amp w/aplomb. Now the Duelands may do that ever more so, but i already owned the Mundorfs & the JFXs size & cost made an easy choice for the larger values. They have an incisive spacious sound w/very good attack & decay, require little break in & represent exceptional value.