New Tube Quiz

[JOEY B.]

The 6FQ7 GE tube should work in the LIMIT section of a Coliseum Boogie.

 

[212Mavguy]

12bz7 is a wonderful v1 tube in my silverface Franken-Champ. Noticed what looks like a 7591a box, output pentode used by both guitar and hifi amps. Vintage strong or NOS 7591a tubes will bring decent money on eBay.

 

[stokes]

The 6FQ7/6CG7 is used in some Ampegs.

 

[lyman]

i've got a couple GE 12ax7 tubes. they sound good to me, actually i compared them to a unlabled chinese 12ax7 and a jj ecc83 and it sounded better than both (more detailed, fuller, etc.)