#1
|
|||
|
|||
JJ tubes
My pedalboard has an ART (brand) MP tube preamp on it to a) supply phantom power to my LRBaggs Para DI -- I use this pedalboard for acoustic electric as well as electric -- and b) to get tube sound even if I plug in direct to a house PA system. Anyway, the tube pre is a few years old and I decided to change out the tube before it gives out mid-set somewhere, so I replaced the o.e. cheap Chinese 12ax7 with a JJ Electronic 12AT7XXX ECC881 and am thrilled with the outcome. Once it starts to break up, it sounds so good, better than with the previous tube.
I have another unit I use for vocals and I put a Sovtek 12ax7wa in it. Seems to break up a little sooner than the stock tube, though I haven't tried a guitar through it yet. I never realized that a single tube could change the tone so much. Anyway, thanks to Steve Dirosa for mentioning JJ tubes a while back on another thread.
__________________
As my username suggests, huge fan of Yamaha products. Own many acoustic-electric models from 2009-present and a couple electric. Lots of PA too. |
#2
|
|||
|
|||
12AX7 is one of the longest lasting signal tubes around. Good used pulls aren't at all expensive, or even free by the bucket, if you know where to look. You should get a few and try them. Telefunken made good tubes. It's the boxed NOS that the cork sniffers have driven to stratospheric heights.
__________________
Guild DV4 (Westerly) |
#3
|
|||
|
|||
i believe that the 12at7 would be better for vocal usage than the 12ax7. the at7 has less gain than the ax7, so the ax7 would be better for guitar usage.
play music!
__________________
2014 Martin 00015M 2009 Martin 0015M 2008 Martin HD28 2007 Martin 000-18GE 2006 Taylor 712 2006 Fender Parlor GDP100 1978 Fender F65 1968 Gibson B25-12N Various Electrics |
#4
|
|||
|
|||
That's what all the literature I read seems to say, but I like the sound of the 12at7 in my guitar rig. Maybe I'll have to buy another for the vocal preamp...
__________________
As my username suggests, huge fan of Yamaha products. Own many acoustic-electric models from 2009-present and a couple electric. Lots of PA too. |
#5
|
|||
|
|||
Fore some of the best around, Telefunken, two ECC801S and three ECC81 tubes I have. Found them in an old piece of test equipment that never got used.
__________________
Fred |
#6
|
|||
|
|||
Quote:
play music!
__________________
2014 Martin 00015M 2009 Martin 0015M 2008 Martin HD28 2007 Martin 000-18GE 2006 Taylor 712 2006 Fender Parlor GDP100 1978 Fender F65 1968 Gibson B25-12N Various Electrics |
#7
|
|||
|
|||
Quite the find!
__________________
As my username suggests, huge fan of Yamaha products. Own many acoustic-electric models from 2009-present and a couple electric. Lots of PA too. |
#8
|
|||
|
|||
Yeah, and all I want is a good 12AY7.
__________________
Fred |
#9
|
|||
|
|||
Tried the newer ElectroHarmonix one? I've auditioned them in a few tweed Fender builds, and they compare quite favorably to the Old GE JAN version. The good ones do, anyway.
__________________
"You don't have to be great to start, but you have to start to be great." -Zig Ziglar Acoustics 2013 Guild F30 Standard 2012 Yamaha LL16 2007 Seagull S12 1991 Yairi DY 50 Electrics Epiphone Les Paul Standard Fender Am. Standard Telecaster Gibson ES-335 Gibson Firebird |
#10
|
|||
|
|||
In the affordable range of vintage tubes are probably vintage Raytheon longplate tubes for 12ax7s. Sylvania for 12AT7s.
New production... Probably Sovtek LPS... Very neutral and balanced. For chime, tungsol.. For dark JJ83... For a thick bump in low mids... JJ803 ... For mid scoop with nice present attack .. Chinese.. Sovteks WAs for strong with an edgy cut. Hope this helps! Last edited by Tommy_G; 10-17-2017 at 07:26 PM. |
#11
|
|||
|
|||
Just re-tubed my Vox AC15C1 with JJ's, and I can't believe the difference in tone! It's like a blanket was taken off the amp..
The stock Chinese tubes just weren't doing that amp justice.. I can't recommend JJ's highly enough. |
#12
|
|||
|
|||
There are better tubes than JJ's---these were recomended on this site for my Amper jet ll
http://www.thetubestore.com/Tubes/Preferred-Series
__________________
___________________________________________ 1933 Gibson L-00 2007 Taylor 110 2013 Taylor GS Mini 2018 Eastman E10M 1977 Sigma DR-9 2012 Republic Miniolian 2016 Recording King ROS-G9M |