I purchased this specifically to drive my Hifiman Susvaras. It is a beast when it comes to power. Even on low gain, it drives the Susvara's effortlessly. The big surprise was its abilities as a preamp. I tend toward analytical sound and equipment that produces it and I found this to be a good non-tube option for bringing in some warmth. I also used this to drive the RAAL interface box for RAAL Requisite SR1a and it works beautifully. At $2.5k it is a true bargain for me. It's winter so the heat generated is not an issue but if heat generation is an issue then look elsewhere.