I have a Cat SL1 mkIII and did a little bit of NOS (telefunkens) rolling and would agree with Ken. I had much more noticeable results tube rolling on my power amp input (and to a slightly lesser degree, power) tubes.
Tube Rolling for Convergent Audio SL1 Preamps
just wondering if anyone has experience in experimenting with different tubes in a convergent audio sl1 preamp....ken stevens, the preamps designer, will tell you that premium nos tubes like old telefunkens, mullards, amperex, etc will make NO DIFFERENCE in the sound quality....that his design works with todays current tubes just fine.....i find that hard to believe since they can make a HUGE difference in other pieces of gear.....does anyone have an opinion that they can offer?.....many thanx!
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