Those amps are a steal at that price. I have not really read anything bad about them. I have had my eye on them for a while. I am about to pull the trigger on a maverick audio tubemagic DAC/Pre for my son's birthday. I bet it would pair nicely with the CDA-254 amp. I was going to buy the Emotiva UPA amp but I bet the class audio amps will out class the emotiva (no pun intended).