Deep and wide soundstage clear and detailed sound
These sound fantastic in my ST120. I got the kit that shipped with the Russian 6550s and after 60-120 hours I wasn’t hearing that wide 3d soundstage I was wanting. The 6550s sounded really good but I felt the right tube could really open up and fill the room. These KT88 tubes do that very well. Amazing clarity across the spectrum without harshness.