Quote:
Originally Posted by zimske
that was exactly what i did. if you guys remember, i started talking about low gain option, and i think you told me to try 12at7 or something. then i thought about it for a while, lower or higher gain, but i figured, like, "why? you have a marshall, so have it then." so i have a marshall. 
anyway, a guy here is selling some preamp tubes, says they are brand new:
12AV7 AMPEREX
12AX7 RAYTHEON JAN 5755
12AU7WA GE
12AT7WA GE
this amperex is some $18, the others are around $13...
seems a bit much, don't you think? |
Is the Raytheon supposed to be 5751? It makes a big difference. I've never heard of a 5755. Anyway, these are all low to medium gain twin triodes. A 5751 or a 12AT7 in V1 will knock the gain down and the amp will have more clean headroom aka more Fenderish sounding. Some people like that and I say if you do, buy a Fender. Marshall's were made for tonal onslaught and your amp deserves the right tubes. Try to buy several high gain USA NOS tubes like 12AX7A's. RCA, Sylvania, Raytheon, GE, etc. These are the tubes that will turn your amp around. Expect to pay around $20 to $25 each. Try to get the best tube you can afford, as it will last longer. Try to find a tube that is being sold as NOS. If you don't have a tube tester or access to one, then you are going to have to rely on the seller's reputation.
I suggest staying away from these tubes unless the Raytheon is a 12AX7.
Marty