Sounds like you're pretty happy! I can't wait until someone replies with info on the remote controlled volume. I have an Anthem Pre 1L and can't stand getting up to change the volume!
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I'm trying some JAN Philips 12AT7 driver tubes, and will probably be ordering some Ei 12AX7s shortly and perhaps some EHs as well.
RE: the remote volume, I think she's about to go 'under the knife' again but a bit more drastic, perhaps to the extent of modifying the front of the chassis (either lengthening it or fastening a new faceplate similar to the one on the 302b) to allow room for the ALPS and remote unit etc... I'm lazy and want a juice-up-juice-down button ;) I'll probably perform a few other mods while I'm in there and post what I've done and the results.
I am still waiting to hear from Jolida re: the parts for the volume control, but I'm actively persuing it. FWIW, I hear they are coming out w/ a remote volume control themselves, probably be in-line like the Creek (basically a passive pre-amp) but I am not fond of the idea of introducting another set of interconnects and an entire other device inline with the signal path.
I re-re-wired the inputs a couple of days ago replacing the factory 4-pair shielded line from the RCA terminals with 2 pairs of audioquest coral (triple-balanced perfect-surface copper) with some impressive results, which makes me want to consider rewiring much more of the inner workings with yet better wire (probably 2 runs of shielded 2-pair silver for the inputs and unshielded silver-in-teflon for the rest of the point-to-point wiring. I'm considering the cost of all of the above plus the ALPS project and am almost leaning toward something like a Rogue integrated or moving to monoblocks with a separate pre-amp.
I've got a 302 I'm trying to convert to a 502. I cant get any clear info. Any ideas? I know the basics, but actual resistor chages and bias adjustments have me concerned. By the by bypassing the ballence controll and the little board on the volume pot makes a big difference. This amp loves to be moded, the transformers are powerful and can take anything I can throw at them. Feel free to email me with any info, I can use the help.