Had to change out my 8 year old Svetlana's in my DSL100 last year and replaced them with Mullard's Russia made EL34. What a difference!

RICH harmonics, glorious feedback; wonderful, powerful bass and overall tone! I cannot think of another valve I would want powering my DSL100 from this point forward.

I do not move my amp around, or transport it, so I cannot comment on durability issues brought up on transporting amps with Mullard valves.

I am a Mullard man for life as I cannot imagine a better tube for this amp. This is as close to perfection, at least for my needs, as I can get. I was and still am astonished every time I crank up my Les Paul and DSL ... when those tubes light up, so does my soul.

I bought the mullard el34 for my Marshall dsl50. they really sound smooth and I think they were a great replacement for the wing C. I had a hard time holding a bias at the begining but then I gave them some time to break in and now they are fine and sound great.

Great sounding tube, no doubt! But not worth the trouble since they only lasted 6 months. And thats with zero gigs, just band practice! These came stock in my Splawn Quickrod but after 6 months it started to souund like crap. I checked the bias and two of the four Mullards were dead. I'd avoid these at all costs, or it'll cost you anyway! Would be great to buy these and save them for the studio.

I replaced my tubes in my Hughes and Kettner DuoTone head with these ( the previous tubes where the Winged C el34's) I liked the sound...well balanced but these tubes have a rather low output. My amp tech and I talk about them for awhile when I had them installed. 6 months later and one of the tubes went out. I don't push it really hard, haven't been traveling very much in the last few months so I don't see much reason for it to have blown. I am sure it was just a bad tube. Still costs to have fixed. I am going to put the stock tube brand back in ( Ruby/Shugaung EL34B-str) and be done with it. The only other tube I might experiment with is the GT Dual getter reissues... just a tad pricey for me right now.

I just put these tubes in my Oldfield Marquis 50 Amp w/ 2x12 Tone Tubby Hempcone Speakers. The sound is awesome!!! The sound being produced out of my amp now is so unique and satisfying. If you try these tubes you probably will never use another brand of tube.