Ah, I see. Makes sense. I've a 25R with some DIY mods - 4 x bulk foil input resistors in the input circuit, and main HT electrolytic cap replaced with a Clarity Cap. Big upgrade. I also use these tubes in first 3 tubes -not in regulator. In your case with the 12BH7A, you'd only need a pair. Look at replacing the buffer tube with an ECC99. They take about 20 hours to open up but I find them exceptional. http://psvanetube.com/wordpress/store/products/shuguang-custom-12ax7-lx-special-edition-pair-low-noise-triple-mica/
@noromance I dunno my single chassis RS is just phono and the REf5 is only line stage. I probably could have bought an ARc ref something phono for what i have into the Croft, Long story including a trip back to Glen. I am hopeful it will sing !!!
@gdnrbob Poverty Bay yes named for the lack of much to eat year round, probably also code for bad fishermen ! No RtR in that listening room - brought that experiment to a halt for a variety of reasons - mostly lack of source material at anything less than insane $$$$. The mobile rack has a high speed B77 half track that gets used for a variety of projects. I guess I should edit the system.
You are using the Naim UnitiServe 2 TB as a source into the Aesthetix DAC. I guarantee way, way better results if you upgrade to a UnitiServe SSD and then use a streamer in front of your Aesthetix DAC. I had your set up and now have an SSD/UnitiQute 2B going into an Aesthetix DAC. I use a Sonology drive and by the way the Eclipse upgrade on the DAC is unreal.