From: The Bernadettes Date: Mon, 07 Feb 2000 21:32:47 -0500 Subject: Re: 7025 vs. 5751's
> ------------------------------ > > From: "William Grogan" > Date: Mon, 07 Feb 2000 18:12:47 -0500 > Subject: 7025 vrs 5751 JAN > > Steven Rousseau said: > "A few years ago, someone on this list > suggested trying 5751 pre amp tubes as > a replacement for 12AX7. > I bought a few Joint Army Navy (JAN) > 5751 made by GE / USA. > These tubes have an amplification factor > of 70, compared to 100 for the 12AX7. > In 2 words, very smooth. The tone difference > is noticeable and the slightly lower gain > helps to control feedback. I like it so much > that I have switched the first pre amp tube in > all my mid sized and larger amps to 5751. > > Thanks to whoever made the suggestion." > > Steve et al., > > I'm glad that you have been able to find a source for 5751 pre-amp tubes Steve. Atta boy. > BTW, it was none other than lister and amp guru Don DeStefano who first enlightened me on 5751's. I'd like to try them someday, especially if they perform as well as you've indicated. > > Bill G.
Yup, that was me, I'll confess. I was getting ready to respond to the earlier request by my fellow Conn. Yankee harper and proud Concert owner Garry Segal about my love of 5751's and to give them a try in his Concert when I just caught this post. I would recommend that any amplified harpers on the list try swapping out 12AX7's with 5751's. They don't cut the gain signifigantly but they have a much smoother tone and a lot less of a feedback prone treble response. My favorites if you can find them are the NOS RCA brand black plate "Command Series" versions. These are absolutely the best sounding pre-amp tubes for harp IMHO. Check the usual NOS tube dealers for them. Command Series 5751's are extremely rare and usually pricey if you can find them. I'm also a fan of late 50's early 60's vintage NOS RCA brand 12AY7's tubes. Another great sounding tube. These were the tubes that Fender used as the first gain stage pre-amp tubes in their tweed amps.
