jim: airtight is indeed a bullet-proof, beautifully made and finished product that is characterized by great sound i've been honored to sup and party several times with airtight's owner and designer, mr. mura. he is a dedicated audiophile and gentleman of the first rank, which shows thru in his tubed electronics. I'm not sure which airtight you're considering, so i don't know your pricepoint aversion. if you have the means, however, i suggest you also consider the nagra vpa monoblocks; these are another great-sounding tube amplification source that are swiss made, and look it. -kelly