My Quicksilver Mono 120 amps are six months old. Liking them even more now.
- After 300 hours on the Tung Sol KT150s and the coupling caps I noticed a nice change. While the factory installed EI inputs and JJ driver tubes were okay, the amps elevate to a new level with really good 12AU7s.
- Wow, with a really good 6SN7 based tube preamplifier, the Mono 120s far exceed their price point. Using an upgraded Cary SLP-98 preamp.