Read the reviews, you will not be disappointed. Nighthawk is a pretty good step up from Blackhawk, it uses all their higher end caps. Also has a higher quality four step powder coat finish. Warm-up is no big deal, turn on when you get home, let it run however long. People who obsess over every hour as if their precious tubes are dying minute by minute are OCD. Besides, Raven, first 30 seconds stone cold sounds better than any ss amp. And it only gets better from there.
Incredible build quality. https://www.youtube.com/watch?v=Gcd76DZmbdY&t=302s
Incredible build quality. https://www.youtube.com/watch?v=Gcd76DZmbdY&t=302s