After dissatisfied with the Sovtek 6L6WGC vacuum tubes in my Leben CS600, I bought a matched quad new reissue Mullard EL34 from ebay. After break-in them for more than 100 hours, they sounded better than the Sovtek 6L6WGC in my system. Although the bass is not as strong as 6L6WGC, they have beautiful forward midrange which focus more on upper mid and high. In my system, they sounded bright. I also heard sibilance. I listened to Jazz and Pop most of the time and some orchestra occasionally. Vocal’s baritone is very important to me but it is barely audible with the Mullard EL34. Too bad. I really thought these tubes will works in my system. Guess I will be doing more tube rolling.
Below are the photos of these tubes.
These photos are taken using Nikon D600 Full Frame DSLR camera with Nikon AF-S NIKKOR 28mm f/1.8G Lens.
Andy's Hangout 