I have a matched pair of these incredible sounding tubes from Upscale Audio.
- I am the first owner and bought them last year for a PrimaLuna Premium Dialogue HP
Integrated tube amp.
- I bought this amp from Upscale as well (It is also first owner and for sale),
so the guys there (Kevin/Jarrod) suggested these. I couldn't have been happier.
Anyway, these 12AU7s PreAmp tubes have perfectly matched specs, see pics for the measurements
Also,
- These are Platinum Grade (for the lowest microphonics).
- And for the tube aficionado, these are the coveted "wrinkled glass" British production version.
- For 12AU7, CV4003, 6189 tubes
The price for the pair includes PP fees and shipping at $175.
I paid $250 for them from Upscale, and I have receipts.
They have about 400 hours on them, working perfectly of course.
I only used them in the PrimaLuna amp, and have been given nothing but TLC.
The white printing on the tubes are mostly there, and they are exact design matches.
The PrimaLuna’s are known to be easy on driving the tubes, so that these NOS types of tubes will last longer,
twice as long as predicted, from about 5000 hours to about 10,000 hours.
BTW, I am keeping a separate pair of the NOS Mallards for myself for future use.
I dont have an amp for them right now, but I mean, once you’ve had the good stuff,
it is hard to go back, and the prices of these NOS tubes keep going up.
Ridiculous prices of course, but they really are one of the holy grails of tubes.
I didn't believe it until I listened myself.
I am also selling a pair of NOS Brimars that I also tried with the PrimaLuna.
Same thing at the Mullards here: one owner, perfect condition, erc
Thx
