RFT is a German brand. The RFT ECC83 / 12AX7 is a durable tube with very low microphonics. The RFT ECC83 is well known as a fantastic hard rock "crunch" tube in Marshalls, Mesa-Boogies, and similar amps. They are slightly darker sounding than many other 12AX7/ECC83 tubes.
Our stock was received in bulk packs so we have packaged these RFT ECC83 tubes in our own white boxes.
Logos may vary from tube pictured, but construction is the same.
I read some reviews and decided to try these in my Marshall 1959 100 watt slp reissue. I swear I have had just about every current production 12ax7 in this beast and these rft tubes may now stay! I ordered a few and one was bad. The tubes store sent me a replacement immediately! The treble in my poleax can be a bit harsh and untamed and these settle that down and really push the creamy miss forward and bring out the best in this amp that I have heard yet. Definite keepers. There are so many good quality tubes on the market that tube rolling can become a bit of an endless obsession. At one point I was changing tubes more than I was playing. Just buy a trio or at least 1 for your V1 Marshall spot and call it a day. Fantastic sounding tubes for crunch!
By JPF from WA
I can't get over how quiet this tube made my JTM 45 head sound. The tone seems to come out like never before, with articulation and sensitivity coming of the guitar i never knew was there. Its a great find and a great tube!!
By Joseph Y from Hickory, NC
Great in Marshall DSL40
Dropped this bad boy in V1 in a Marshall DSL40 and I must say it has superb tone. Highs are nice and round and excellent lows and mids. Even sounds phenomenal in V2 (high gain stage). A great deal for a NOS tube.
By Douglas Robertson from The Yukon
My Rivera amps love these. It's like they were what the designers had in mind when building the amp. Fat, rich, and creamy without losing clarity. Not a dark tube but more a warm tube. If you have an amp you like to push the power section on, put one of these in your phase inverter spot! Been tube-rolling for 30 years and these are some of the best I've used!
By Carl from North Hollywood, CA
Made a great improvement....
I bought 3 of these for a Marshall 1959 Plexi Reissue.I had 3 Tung-Sol 12AX7's in V1,V2,V3. Decided to try out these RFT's and see if I liked them.Replaced only the V1 position first and it made a GREAT difference.(Left the Tung-Sol 12AX7's in the V2,V3 position.) Didn't think changing one tube would make such an improvement. Wish I found out about these earlier.
By Jonathan Newberg from St. Petersburg Florida
After reading so many positive reviews I bought 2. One for my Peavey 5150 with SED Winged C 6L6GC's & one for my JSX with SED Winged C EL34's. Both in V1 & made all the difference in the world. Such a well balanced tube & three-dimensional. I've only been able to set my guitars down long enough to order more since they've been installed. I never thought a preamp tube could make such a difference. 5 stars all the way around!!!!!!
By Paddy Mac from Oshawa Ontario
Work with the Suhr Badger 35 with EL84s Power Tubes
Ended up with all three preamp tubes being these RFT tubes. Mixing not recommended. Much better to go with all your preamp tubes the same when using these. These are quiet, solid, and work perfectly with the RFT power tubes. Really nice stuff. And ... I got a bad one, and the tube store replaced it no problem. nice ...
By Phillip from DC
Perfect for JCM800
Perfect tube for my Marshall JCM1C (50th Anniversary) combo amp running a V10 Vintage speaker. The OEM tubes were OK but dull - I did some research and discovered that RFT valves were used back in the 80s for the JCM lineup. Well that research paid off and these are my exclusive tubes for this amp. They are a little dark, but it tames the highs without sounding like they roll off like the JJs. These also seem very durable. I can see these going up in price in years to come.
By Max from Rochester Ny
The RFT ECC83/12AX7 tube is a bit "under-rated" if you ask me. This tube is dark like a standard JJ, but has an open, full, lovely tone like a good NOS tube would have. This thing is dead quiet for an old tube as well. Cannot go wrong if you have never tried one!
By chris from knoxville tn.
I find nothing dark about them in my tsl100 nos tubes kill the current production stuff if you want your Marshall to scream these are the bomb!
By R.N. from Indiana
I got one.
Oh my god!
I put in V1 of my Vintage Modern, and it completely changed the amp. It's smooth and high gain, with tons of tight low end.