I would spend some time reading different forums as some have suggested. Just search for the type of tube you’re looking for in the application you’re using it. It’s amazing what you can learn from others especially their mistakes. I’m still a novice so I like learning from others. NOS tubes are not always what they’re cracked up go be. I’m not saying to avoid them but it’s a cost/benefit situation. Is that $150.00 NOS tube worth three times as much over good current production tubes? Does your system warrant the expenditure? You’re in the same realm as cables here. My best advice is read, read, read.
Tube rolling newbie- how to choose NOS tubes
I’ve purchased a xDuoo TA-30 dac/amp for my first tube rolling experience. From online reviews, I plan to tube roll in a Matched Pair of Mullard 12AU7.
Looking online, there are new reissued Mullard 12AU7, matching NOS tubes at various price points, years, features (like long plates?), and used tubes like on eBay.. This is confusing, how do I choose? Should the tubes be tested? Who should I purchase from?