Tube CD player and Interconnects

Try a Mullard CV-4004,it is the military 12ax7.It will be a little quicker up-top and more dynamic than the standard Mullard.Or a Telefunken/NOS {800 series=$$}.

IMHO - screw the Mullard, and go for the Sylvania Gold Brand 5751 triple mica blackplates. [What are you using for 5751s?]

I've rolled the Gold Brand Sylvanias (not gold pins), as well as GE triple micas (I've got an extra pair if someone needs - they are very nice tubes but not in league with the pricey Sylvanias), GE JANs, and Sovteks. The Sylvanias are superior in vocals, high end, low end, imaging (I feel you have to hear these to appreciate the wonderful imaging), and soundstage. Sure, they have 70% of the gain of 12AX7s, but who cares? I've got plenty of juice in my system, so SPLs are no problem. The Sylvanias are awesome, pure and simple.

I have found the VenHaus VH Audio Flavor 1 Power Cord works wonderfully with my Jolida JD-100 - throw away that stock cord! After about 120 hours of burn-in, I was surprising impressed with the detail, and blown away at the taut, natural bass my system was producing. Well worth the price of upgrade, and Chris VenHaus is now offering the Flavor 1 cryoed. You can chekc out VenHaus' site, and e-mail Chris V. for sound advice.

For interconnects - I use Gronebergs between my Odyssey Stratos amp and Tempest pre-amp, and for the JD-100. They are everything my system needs. Also use Groneberg speaker cables.

Good luck with your purchases.