great for hifi
I got these to put in an old Silvertone stereo console. They replaced a set of JJ'S which sounded best out of what I had on hand. Sovtek, JJ, and Mullard reissue. I liked the JJs a lot in my Fender amp but the were a bit harsh at higher volumes in the hifi. These TADs were like pure silk by comparison. They now have a permanent spot in my hifi equipment. I imagine though that I would still prefer the JJs for guitar.