Smooth metal heavenly tone
I've tried JJs, Ruby and EH 34s in my Marshall 2205s, I have an 1985, 1986 and 1988 heads. I really like high gain in my amps but do not use a distortion pedal, just an Od to compliment the boost on these Marshalls. The JJs sound good and so do the EHs and can't really say which one is better. The JJs have better bottom end but the EHs add more mid and top end. So I put the Preferred Series in my 1985 model. As you know the early 2205 do not have as much gain but WOW!!!! These EL34 tubes not only add real punch bottom end but also smooth percussive highs. So far these tubes have been great for awesome 80s thrash or smooth prog metal tones!