Anyone familiar with Air Tight ATM-1S?


I’m looking at an ATM-1S power amp, but haven’t owned an EL34 based amp before. Right now I’ve got an Elekit TU8600S with WE300B’s pushing some Volti Razz. I’m digging it, but I’ve been curious about Aor Tight gear for a very long time. 

If anyone had experience with Air Tight ATM-1S or el34 vs 300B would be much appreciated 
yomaha
I have LOTs of experience with AirTight el34 based amps.  They are outrageously good.

my favorite is the ATM-3 mono blocs.  

but the 1s is nice.  Just not the ATM-3 performance.  NOTE: I am thinking about the prior version of the ATM 3's.  not the newer vertically oriented very expensive ones.  The older version are basically bomb proof and can be had for a very reasonable price on the used market... a few pairs come up every year.  But you have to be patient. 

if you want to know more, send me a private message.

NOTE: they respond well to tube rolling.. especially vintage NOS Mullards or Telefunkens.  Tube life is quite good.  And easy to bias.