I wouldn't even call it that. It sounds pretty transparent and airy where you want it to, in a solid state way, but without the edginess. Further down, there's a lot of midrange detail, with maybe a tiny bit of valve character present, but less than you'd expect. The bass goes deep and is as tight as I've heard in my room. It also seems totally effortless, but that could just be into my 93dB 15" DCs, which are an easy load.