Which preamps use 6922/6DJ8 tubes?

i think this is called the tail wagging the dog

One way is to find a preamp which uses E88CC, many are going to recommend something nice and the list will grow, the other one is to get a preamp that uses different kind of tubes or no tubes at all and sell your NOS stock. Best is to listen what matches your power amp.

I totally get OP’s line of reasoning - don't think it's weird at all 😅

6922 is a great tube for line stages - better than 12AX7 / 12AT7 / 12AU7 imo. But if you’re looking to use valuable NOS, then you have to be wary of designs that use a LOT of matched 6922 - like older high end BAT, ARC, Sonic Frontiers units. BAT and ARC have moved onto 6H30, which is a fantastic line stage tube but without many opportunities for rolling. The lower-end Sonic Frontiers hybrid units used less tubes but IMO these aren’t worthy of holy grail 6922 (I did not like the SFL-1). I briefly had a BAT VK 5i that used a lot of 6922, and it was a pain to find quiet matched ones - not a great experience. I definitely wouldn’t stock it with holy grails.

VAC currently uses an interesting approach where they just use a single pair of 6922 in conjunction with Lundahl line transformers for I/O. That would be perfect for your use case, but most of their current preamp line is above your budget - though you might find a used Renaissance V for ~5K. VAC has used 12AX7 / 12AU7 in past preamps, so I’m not sure if they may have an older 6922 / transformer based preamp that would fit budget.

Thanks for your help. Makes sense it sounds weird but I'm not about to start buying NOS 12AX7's when there are plenty of preamps (at least I think) that use what I already have.

What ARC preamps would you recommend (that use 6922 tubes)?

LS5 (all versions), LS25 (mk1),  Ref1 (mk1), Ref2 (mk1) all these are 6922 based.