All I can tell you is that I have a quad and they sound quite good and were very dependable over the time that I used them, more so than a quad of NOS RFT's that I bought from a well known dealer. I've not compared them to NOS Mullard's, nor Psvane's.
All I can tell you is that I have a quad and they sound quite good and were very dependable over the time that I used them, more so than a quad of NOS RFT's that I bought from a well known dealer. I've not compared them to NOS Mullard's, nor Psvane's.
The Mesa valves are in fact made by RFT (in the 80's). I have several sets (from various sources and labels, such as Siemens, Mesa, Rivera, RFT, etc.), acquired as stock for my guitar amps. Generally, my experience suggests they don't respond well to higher voltages (as found on some vintage Marshall guitar amps) and sound a bit drier and less rich in the midrange than say an xf4 Mullard in the same amp. As I have collected a large number of NOS valves over the years, enough to cover my needs anyway, I have no experience with the current production ones.
