Tube for aesthetix pandora / romulus

Manufacturers HAVE to use reliable tubes that are available in quantity, most likely current production models. These are rarely the optimum tubes for the application, but the best ones are likely to be (1) not available in quantity and/or (2) too pricy to be a practical choice. This simply makes sense and is not a criticism of the manufacturer.

Does anyone know what specific tubes Aesthetix supplies with their Signature models?

Aesthetix uses the same tubes whether its a standard, signature, or eclipse model. In my Pandora dac I love the Mullard 10M gold pin 12AX7 and 6922. The 10M are rated for 10.000 hours and are more open sounding than the standard Mullard UK tubes. You will pay a premium for these and they are very hard to find.

JMW, you sound very knowledgeable about tubes. Are you sure he doesn't use different tubes in the sig versions? I only have read their site on the Rhea signature vs regular (my new unit) and this is what they said about tubes:

Any tubes that can be bettered by our special stock of graded and matched tubes are replaced.

I'm assuming that Jim has a special stash of tubes for signature users. Not saying that they are lower noise, add less static, open the soundstage, image better, have tighter bass or anything else that folks feel tube rolling does for a piece of equipment.

I just had this tube rolling discussion with an audio engineer who is highly respected by this board who disagrees with MOST tube rolling for a variety of reasons. I don't know the specifics, but it deals with coatings being burned off in the beginning and folks hearing what they want to hear after that. I personally haven't tube rolled as I said. I've heard friends gear when they have done this and didn't hear such huge differences for the costs involved, but I do think it's great that some of you have a subculture of audio and love doing this.

I honestly wasn't trying to slight you KNG. Just trying to give OP another side of the story since he has no idea what he's doing. Has he been back to post yet? I'd love to hear his thoughts on this and which tubes he decides on using and why. Always interesting conversation over here.

Guiche,
For the 6dj8 there are CCa, E188CC, E88CC and ECC88, 6922 and 7308, possibly others.

I honestly wasn't trying to slight you KNG. Just trying to give OP another side of the story since he has no idea what he's doing. Has he been back to post yet? I'd love to hear his thoughts on this and which tubes he decides on using and why. Always interesting conversation over here.

Ctsooner, I'm just offering my .02 and participating in the discussion.

I spoke with designers of my tube components. They all encouraged tube rolling and not one emphatically insist design only works with any particular tube.