Originally Posted by gurus
So which one you think is the best sounding one in this group? 7236-6528A-6520-5998-6AS7G-6336?
Need to get one of the above for the Wheatfield Audio HA-2.
I think its more a matter of who made the tube. These tubes are all similar or you couldnt generally substitute them for one another. But be careful because some tubes in this group are just different enough you will want to verify your Wheatfield can use them.
The Bendix and tung sols made tubes are my favorites from this group. I like the tung sol 6080 as well and this 6080 tube is the one actually listed in all the tube manuals as the drop in replacement for the 6as7. The 6080 is a better made tube than the 6as7g IMO, but I think the tung sol 6as7g sounds a little more open in the circuits I have heard them in. Mostly you will find RCA, GE, JAN Philips or Sylvanias available for sale. From that group I like the RCA's and Sylvanias best. The 6336 is a highly regarded tube that I have never used. They are around but you pay a premium for them; expect $50 or so per tube for a 6336. The 7236/6528/5998 can all be tough to find.