I've had my TL2.5 preamp since new in '97
It's an early one with 12AU7's & 6350's
I ran a couple sets of JJ's that VTL sells.
I ran a set of Amperex Bugle Boy 12AU7's for the last 3-4 years. There was a significant improvement over the JJ's.
I just got a set of NOS 1959 Telefunken long plate 12AU7's. Another significant improvement over the Bugle Boys. Improvements are soundstage width, separation. Huge improvement in timbre - drums & cymbals.
I've just installed them today & started listening to them but it is a pretty huge improvement.
It's an early one with 12AU7's & 6350's
I ran a couple sets of JJ's that VTL sells.
I ran a set of Amperex Bugle Boy 12AU7's for the last 3-4 years. There was a significant improvement over the JJ's.
I just got a set of NOS 1959 Telefunken long plate 12AU7's. Another significant improvement over the Bugle Boys. Improvements are soundstage width, separation. Huge improvement in timbre - drums & cymbals.
I've just installed them today & started listening to them but it is a pretty huge improvement.