Electro-Harmonix 6CA7EH big bottle

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Author Message   Dutch Leo Posted on Thursday, June 30, 2005 - 10:30 am:    Just put a matched quad in to replace the scabby old Shuguang EL34's: What a blast!! These are well built and sturdy, not rattling like the chinese were. My '77 One-Thirty combo has a B+ of 754 Volts. Adjusted grid-bias to 0.43 Volts. No problemo, great sound. Recommended.   vcamargo99 Posted on Thursday, June 30, 2005 - 12:21 pm:    I retubed my '76 HD130 with the same tubes. It sound soooo goooood!!   Steve Kennedy (admin) Posted on Saturday, July 23, 2005 - 08:08 pm:    Thanks for the real-life experiences! I bought a pair of these when they first came out but I haven't needed to put them in and couldn't give much of an opinion. However, I DID physically compare them to an original Sylvania US made 6CA7 and they are obviously a physical copy of the original! Steve   c. Posted on Tuesday, July 26, 2005 - 12:27 am:    ive very happy with the sound of these - but ofcourse they rattle! i am yet to try the jj el34L and the american groove tube steve speaks of. take care all, keep making music - man.   Mike H Posted on Wednesday, August 10, 2005 - 08:24 pm:    I've tried both the JJ E34L and the 6CA7EH. I used the JJ's for several months and have had the EH's in for about a month. I've found that the 6CA7EH have a bit more bass, a bit less mids, and maybe a bit more highs, but I think they chattered at me 1-2 times, I think. The JJ E34L have tighter bass, a bit more mids, and a bit smoother highs. Both seem to break up at about the same rate -- unlike what you might expect when comparing 6CA7 to EL34. I don't think either tube sounds bad, and the differences are minor, but I think I probably prefer the JJ E34L because they have a smoother sound, more musical. But, I like the look of the fat bottle 6CA7 tubes!   Cameron Kinsey (gibson175) Username: gibson175 Registered: 09-2007 Posted on Wednesday, November 14, 2007 - 05:32 pm:    I put in some 6CA7EH's in my 210 sixty-five yesterday and biased it. They replaced a pair of 30 year old phillips tubes. Okay - so the phillips were old, so I am not tying to compare the tubes to anything else. The EH's sound fantastic! Titanic bass response, and more clarity than i need, with a hint of breakup with my pick attack. Awesome! -of course, the amp was pretty tasty to start with.