You have to read between the lines.

Exactly. In addition, for me there is a special thrill in getting world class sound for less money than some people pay for shipping the tubes.

My desk is a mess, but I can usually find what I am looking for. At 3 o'clock, two inches down - there it is! The problem comes when I clean up and "organize" everything - can't find anything anymore...

The impression I get from reading the above post and references is that some 807 tubes did not meet the most stringent requirements for military use and were relegated to military devices that there less demanding. My question is: Does this makes a difference the way we use the 807 tubes in our...

Do you think that the amp will sound different through a headphone jack than through speaker taps?

How about a smoky donut?

Are these power tubes good with any drivers, or only in specific pairings?

I have a pair of old L63/6J5G that sound very nice in the Ultimate with a warm glow to the tone. As always, synergy is very important.

There was a Philips plant in Adelaide, Australia. If I remember correctly there was a time when tube internals were assembled in England and shipped to Australia and then the tubes were completed there.

I use the list all the time - extremely useful! Thanks!

Is there a problem using line out as a preamp and having the headphones connected at the same time?

I find that I have to balance the two volume controls on the Ultimate and the power amp for the best sound. And yes, you can use the headphones at the same time as the preamp out. And the XLR headphone jack can be converted to a 6.3mm headphone jack with an adapter if needed - the Ultimate can...

My main headphones are 80 ohm. Most of the time I use the Ultimate as a preamp and listen through speakers. Sometimes it occurs to me that certain tube combinations work better with the speakers compared to the headphones. Does using the Ultimate as a preamp change the mu matching of input to...

Eric sent me a 12AV7 that has a mu of 37. I have had good results with a similar tube that has a mu of 47. To me it seems to be more an art than science how to match up drivers with power tubes in relation to the mu - trial and error. On the other hand, it seems to me that some people have some...

It is very likely that the Neotron is a rebranded Visseaux. You can go to Google Images and type in Visseaux 6K6 and see if they look the same...