I have a Mint pair of these Excellent+ 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. they also recommended NOS Mullards,
which I Tried as well, and they are also excellent. Depends on your speakers.
These 12AU7s PreAmp tubes have tightly matched specs, see pics for the measurements
Also,
- These are Platinum Grade (for the lowest microphonics). TOTL: Top of the Line
- For 12AU7, CV4003, 6189 tubes
- NOS, Made in Britain
The cost include PP fees and shipping at $120 for the pair.
I paid $180 for them from Upscale, and I have receipts.
They have about 250 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 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.
If I can't sell these Brimars at my asking price, then I will just keep them for future use.
These NOS are just like the Mullards, the prices keep going up year after year.
Its a good investment.
SOLD: I am also selling a pair of NOS Mullards 12aU7/CV4003/6189
