Noisey tube problem in ET3

[dtb300]

Originally Posted by ronenash

Just ordered a Matsushita PCC88/7DJ8 from upscale. They are highly recommended by Kevin. I hope it works out well.

So far Matsushita has GOBS more midrange than the Tele 7DJ8, with very similar frequency extremes - Tele maybe a little more high end. But still breaking in Matsushita (about 25 hours now) so highs could open up more.

[Puma Cat]

Hmmm....interesting. I might have to pick up a set of these for the Pr17.

[dtb300]

The Matsushita 7DJ8 - so far (50 hours) - sound is towards the bass side of neutral - 5 Neutral, this would be 3-4. The highs are there, but subdued...not sure if the highs are rolled off or if the low mid/ bass tilt is masking it. More hours to run on it before final thoughts.

[ronenash]

Originally Posted by dtb300

The Matsushita 7DJ8 - so far (50 hours) - sound is towards the bass side of neutral - 5 Neutral, this would be 3-4. The highs are there, but subdued...not sure if the highs are rolled off or if the low mid/ bass tilt is masking it. More hours to run on it before final thoughts.

Interesting, I have heard the highs are very clear.

This is what Kevin from Upscale had to say about them:
"The sound? I used them here in a Cary SLI-80 Signature F1 and it was just like I remembered. The midrange is similar to a real Telefunken 6DJ8, but with better extension on top and bottom. There is a sense of humanity that is exhibited by the best in new old stock (NOS) tubes."

50 hours sounds like enough breakin with every other tube I have used.

[dtb300]

Originally Posted by ronenash

50 hours sounds like enough breakin with every other tube I have used.

My experience with my other pre (ARC) was around 100 hours and I would get the final sound - or very close.

It will be interesting to see if the Matsushita changes any more. To me this tube exhibits the "stereotypical" tube(y) sound so far. Great mids...the highs are there with this tube and sweet...but they are subdued compared to the rest of the sound.