Marshall Amp Forum - View Single Post - Preamp Tubes?

MartyStrat54 · 05-07-2009, 10:40 PM

Yeah, don't judge the sound and performance of all 5751's with the one you have. It's a dog I'm sad to say. I have two Tung-Sol 5751's and they both tear up the tester. These are 1958 tubes (not for sale) that I bought on Ebay about two years ago. I used the stoutest one when I conducted my tube tests. It gave the amp a different window of tones, but it still had some fire in its belly. With a stout 12AX7 in V2 and the amp in the crunch channel, it was crunch away. It didn't miss a beat. I can honestly say that I could live with that 5751 in V1 with a high gainer in V2. It wouldn't be a problem. A lot of people (like you) tend to like a 5751, because it is a quieter tube than an AX7. That quiet translates into a chiming clean channel. Again, it allows different tones to be shaped because of its design.

Personally, I don't think that I would want to go as low as an AT7. I tested with a real good one and I wasn't pleased with it. It was okay, but the punch seemed to be missing.

Marty

05-07-2009, 10:40 PM	#253 (permalink)
MartyStrat54 Senior Member Join Date: Feb 2009 Location: Formerly Phoenix, now north of KC Posts: 2,581	Re: Preamp Tubes? - Who, What, When, Where, Why, and How? Yeah, don't judge the sound and performance of all 5751's with the one you have. It's a dog I'm sad to say. I have two Tung-Sol 5751's and they both tear up the tester. These are 1958 tubes (not for sale) that I bought on Ebay about two years ago. I used the stoutest one when I conducted my tube tests. It gave the amp a different window of tones, but it still had some fire in its belly. With a stout 12AX7 in V2 and the amp in the crunch channel, it was crunch away. It didn't miss a beat. I can honestly say that I could live with that 5751 in V1 with a high gainer in V2. It wouldn't be a problem. A lot of people (like you) tend to like a 5751, because it is a quieter tube than an AX7. That quiet translates into a chiming clean channel. Again, it allows different tones to be shaped because of its design. Personally, I don't think that I would want to go as low as an AT7. I tested with a real good one and I wasn't pleased with it. It was okay, but the punch seemed to be missing. Marty