2. amps-preamps
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Anyone try modern 6sn7 Shuguang WE type vs NOS RCA,Ken Rad

I just bought a KT-88 amp that uses 6sn7’s and the matching preamp uses the 6sn7 tube also. It came with kt88 Shuguang WE plus and all 6sn7’s in the amp and preamp both came with the same Shuguang WE plus.
 

I have a huge stash of old 6sn7’s Ken Rads vt231, gray glass rca, Sylvania vt231 and many others. I am going to pull them out this week and see what these new production tubes can do.

 

I’ve never used new production signal tubes. To be honest the Shuguang sound pretty good but have never compared them to anything. 

 

What are your views on these new tubes are they even close or as good or even better? Are they cheap and will go up in smoke, thanks for any insight.

paulcreed

Showing 4 responses by invalid

invalid
1,271 posts
 

The shuguang CV 181 tubes are a 6sn7 drop in replacement, the Mullard cv181 tubes are not they have a higher heater current of 900ma.

invalid
1,271 posts
 

That is blatant misinformation. It has to be also deliberate as you have clearly read the quote I provided which mentions Mullard (drawing 950mA, by the way).

Care to explain to the community?

You must have read my post wrong, I acknowledged that the nos mullard's are not drop in replacements, but the shuguang CV 181's are, as they are not the same as the Mullard cv181's. I have no idea why shuguang labeled them this way.

invalid
1,271 posts
 

 

invalid
1,271 posts
 

This would clear up any issues and I’d be happy to shut up and buy some should they be 600mA

 

They are 600ma, the only thing you have to be concerned with is if your tube sockets are to close together they might not fit as the glass envelope is much larger than the 6sn7.

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