I can't speak directly about the AQ1001 DT, but I am currently using an ASL AQ1005 300B SET and I think its a great amp. A friend also has an ASL Tulip, and my impression from both these amps is that the build quality if very high and the sound is excellent. No reliability issues with either, although I have replaced one hum pot on the AQ1005.
I've owned the Almarro A318A in the past, and I prefer the sound of the AQ1005....the Almarro was good too, but it didn't have the midrange presence and detail that the ASL has, nor the high end extension. This could just be the 300Bs over the Almarro's 6c33 Russian triodes, but that's what I'm hearing, FWIW. Bass performance with both the ASL and the Almarro is great, from what I remember of the Almarro.
One other thing....I've listened to quite a few tube amps, both push-pull and SET, on my very efficient Klipch LaScalas, and the ASL amps (both the AQ1005 and the Tulip) are among the quietest I've heard in my system.
D.