Please help, Tube subsitute for 6sn7


I have a Supratek Sauvignon. Can I use the Shuguang Treasure 'Black Bottle' CV181-Z in place of the 6SN7.
Have is their specs.
Shuguang Treasure Series Tube Specification:
Model Number:
CV-181Z
Distributed by: www.grantfidelity.com
Filament Heating:
UH 6.3V
IH 0.6a
Capacitance
No.1
No.2
Input capacitance
2.2
2.6
pF
Output capacitance
0.7
0.7
pF
Muller capacitance
4
3.8
pF
Maximum Ratings: (Class A1, single ended)
Ua 450V
Pa 5W
UH-k
+/-100V

Ik
20ma
Pa(No.1+No.2)
7.5w

Rg1
mohm
DC Parameters:
Ua90 250V
Ug 0-8V

Ia
10
9
mA
Gm
3
2.6
mA
u
20
20
ri
6.7
7.7
Kohm
Ia (when Ug=12.5V)
1.3
mA
Ug (when Ia=10uA)
-7
-18
V
snopro
This is an intresting article,check it out.

http://www.6sn7.com/
It's Marketed as a 6SN7 so I wouldn't get too caught up in the minutea in the specs. Beyond which there is plethora of superb 6SN7s to roll. The Black treasure should cause no harm I would try it. Don't hold me to to it perhaps another roll would be better.
Tpreaves -

Thanks for the interesting link.
The Treasure CV181-Z is a direct replacement for 6SN7. It has identical specs as RCA 6SN7. Many of our customers including tube amp manufacturers have used it in place of other 6SN7 and no one ever reported a problem.

Hope this helps. If you have further questions please feel free to ask us directly if you wish.

Best,
Rachel @ Grant Fidelity
Thanks everyone. I'll shoot you an email.