I can't speak to the quality of the tube, I'll let you know when it's received. Not sure why they refer to it as the Dawn tube, but it looks identical to the one you linked to in the photos. The price hike is explainable due to the limited supply.
I have a Synergistic Research PowerCell 12 UEF SE and PS Audio DirectStream Power Plant 12 Regenerator en route to me. I will report back once I've had a chance to evaluate.
@wison Thanks for the info. The following is confirmation from Lukasz with some additional details.
Is the GA TRP 2 auto-biasing so that it will adjust for different spec tubes? In other words, as long as I insert a tube with matching pinout, it won’t cause damage to the DAC? YES, EXACTLY...
I'm going to purchase the ones you suggested and some of the others mentioned in this thread and start my tube rolling journey. Thanks for the guidance!
I've been lurking on this thread for a while now. I appreciate the wealth of information from @Golum and other members who have gone through the effort and expense of tube rolling their GA TRP and sharing the results. Per this thread and others, it doesn't seem like the Shuguang GZ480...