Tag Archives: CV181-Z

‘it really beats all other 6SN7 I have tested’

from Sylvain in France by email:

the CV-181 is doing good after ~200h. IMHO this tube is quite perfect. As a simple driver tube, It provides a lot of control to the sound.

It took some time to get the voice-midrange right though. But now i think that the “rounding off” the notes is just occuring at a later state because of its prononounced articulation. After 5 hours burn in i was able to hear more but not that “rounding off”. Now, the voices are sounding much more natural and fluent…

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‘these are the most closely matched tubes I have ever bought’

by customer originally posted on AudiogoN:

Just recieved two pairs of CV181-Z ‘A’ Tubes from Grant Fidelity. They came in nice boxes, way over packed, and quick. I then tested them on my own Amplitrex 1000 tube tester, and, folks, these are the most closely matched tubes I have ever bought.

full thread here:


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‘These tubes well worth the price premium for those seeking the best’

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Join Date: Jul 2009
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‘Now I can concentrate on music instead of equipment’

Feedback provided by email:

Hi Rachel,

I got the tubes Monday afternoon and installed them Tuesday AM. They have about 26 hours on them and sound very, very nice! The Treasures have about 160 hours on them and the combination of the two brands compliment each other very well. The specificty and weight of individual voices or instruments is unbelivable! I sat a few feet away from the sweet spot and the soundstage changed very little! I expected a little more detail but what blows me away is how natural and realistic the soundstage sounds. The air around Triangles and Cymbals and Brushes  is the best I have heard in my home. The Midrange and Bass is also astounding. I have owned some nice equiptment over the years including Watt 3 and Puppys driven by a Classee DR9 amp and DR6A Preamp and numerous Plinius products but this little combo is the best by quite a margin, that I have heard in my home. You would think the Harbeths cost megabucks! I can now concentrate on the misic instead of the equiptment.  I could go on and on but You get my Drift.  Thank you very much!
Best Regards,
David H.
Posted in CV181-Z / CV181-T (6SN7)/TII, KT88-Z / KT88-T/TII | Tagged , , | Leave a comment