I'm using a Bolder Cable COmpany cable with mine, but it's an older model. I didn't buy it - it came with something else I bought. I'm not really into fancy power cables, but this one certainly seems to work fine. I also liked the even cheaper Iron Lung Jellyfish power cord just as well. And it's $40. I see no reason to spend more than that on a power cord, myself.
Skylab, back to the topic of tubes. I found some vintage Mullards selling for $400+ on Brent Jessee for a pair, so that would be $800+ for a quad set. Are these vintage Mullards notably better than the, say, 60's Mullards? When you recommended Mullards in the LCD-2 thread which ones were you referring to? Many thanks.
That seems like a LOT of money for a quad of EL84's. I paid $200 for a NOS quad of Holland Philips/Amperex and I think they sound great. Also really like the Sylvania black plate which you can get for about the same. I spent less than $200 for the quad of original Mullards I have, but they we used and are branded Rogers. You can save money buying Mullards that were rebranded. They're nice tubes for sure - maybe the warmest of the EL84 but still with good detail. But in the end I stuck with the Amperex.
My Leben CS300 is up and running again. I think the original problem was due to lose tube sockets. That problem damaged one power tube and one preamp tube. I tightened the sockets and got one new power tube (matched with the other 3) and two new preamp tubes, and now it's alive and kicking!