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View Full Discussion If anyone were wondering, the best 6922 tube for this amp are the Amperex 6922 PQ Holland pinched waist. Extremely rare and market price is about $400 per tube. These tubes are incredible, the best frequency response, best extension, best soundstage, best bass. If you don't believe me, google it.
There is current 1 of these tubes up for sale on etsy for cheap: https://www.etsystudio.com/listing/501890838/amperex-pq-6922-pinched-waist-holland
I already have two of these so don't need another one. It's my favourite out of the twenty 6922 varieties that I own. Just thought I'd put it out there for anyone that's interested.
Whats the best price to performance tube you'd recommend
Don't spend ridiculous money on tubes. By accounts I've read so far the EH that it comes with offers great bang-for-buck and this amp's sound doesn't respond hugely to tube changes anyway.
That's what makes the pinch waist so great, they are the only tube that transforms the amp you plug them into. The caveat being the amp uses them properly, i.e. as a preamp tube rather than a buffer tube.
It's the kind of transformation that you'd only get by moving price tiers. It justifies the price you are paying for them. Don't diss the pinched waist unless you own one.
The problem with recommending tubes is they inflate prices. Some NOS I would recommend that already inflated (still far cheaper than pinched waist) like the Valvo Red 6922, Bugle Boy 6DJ8, Amperex 7308 (some people say the white label sounds better, i got both the white and orange and i hear zero difference between the two, you might find a bargain on the orange).
Non-NOS generally have a pretty standard price. Problem with non-NOS is they generally only give you small improvements or none at all depending on your preferences. Well for starters the EH that comes with this unit will be great. If also look at JJ, and generally avoid JAN and military types.
Thanks. Will try to get it later once the AMP is delivered.