[quote name='funkgod' post='880653' date='Jun 29 2010, 08:24 AM']Hello all, bit of a warning and info wanted here.
I have a SWR redhead which uses a 12ax7 (ecc83) in the pre amp.
The redhead has had the valve it came with as new for 10 years with no problems.
so thought it was time for a change.
After a bit of a scoot around i opted for the ones on Ebay, and got a pair, as here....
[url="http://cgi.ebay.co.uk/Mesa-Boogie-12AX7-ECC83-Pre-Amplifier-Valve-tubes-NEW-/230402049361?cmd=ViewItem&pt=UK_MusicalInstr_Amplifiers_RL&hash=item35a5084551"]http://cgi.ebay.co.uk/Mesa-Boogie-12AX7-EC...=item35a5084551[/url]
I replaced my old one, and very first gig, was a sound like loud electrical fault first on louder played notes, then all the time, this was later found to be the valve VERY microphonic, and any amount of vibration would set it off, so on inspection when out it all rattley inside like a spring is bouncing against the inner case when shaken/flicked on closer visual inspection the plates dont look very well supported, and just look altogether flimsey.
I dont even want to try the other one !!!
Are these REAL mesa Boogie ones ??
The valvs say on them, "ENGL tube power ecc83" see pic
should they not say Mesa Boogie ??.
So to the point, has anyone tried these and had problems ?[attachment=53197:IMG_1230.jpg][/quote]
Hi, This is Nic, Proprietor of Voc Rock Guitars. The valve Shown in this Picture was not supplied by us. All our valves are purchased direct from the manufacturer. They are new and tested considerably before leaving our shop, our feedback clearly shows our comittment to Customer service and Item quality. The Mesa Tubes we sell have the Mesa Boogie Logo clearly stamped on the valve. The valve shown in this picture has ENGL marked on it and looks like a second hand used valve from an ENGL amplifier. Here is a link to the Mesa Valves that we sell [url="http://www.voc-rock-guitars.com/Valves-Tubes/mesa-12AX7a-valve.html"]http://www.voc-rock-guitars.com/Valves-Tub...AX7a-valve.html[/url]
Hope that clarifies. Kindest Regards, Nic.