Audio Asylum inmate davehg has written a nice review of the now-discontinued Air Tight ATM 3 tube monoblock power amps. According to the reviewer, these are EL34 monoblocks with 55wpc in triode mode and 110wpc in ultralinear that retailed for $15,000/pair when new. Here’s an excerpt:
With my VAC Avatar SE, ultralinear mode meant more power but at the expense of that “you are there” sense you get with with triode. With the Air Tight, the difference between UltraLinear and triode much less apparent. Just a greater sense of solidity, and a slight but noticeable loss of presence.
Read the entire review, then check out a different opinion of these amps from Audiogon member Jadem6.
Jonathan Valin just gave the ATM3’s a rave review in the Dec. edition of TAS. Check it out.