Thanks for your suggestion. I am also in the process of looking a CDP or DAC for my second unit. I might actually use my single Bendix 6900 in this case. I am checkign with MHDT right now to see if Bendix 6900 will work with his DAC ... it is not one of his recommended tubes.
Anyway, thanks for your valuable information.
P.S. do you know any other DAC might utilize a Bendix 6900 tube? and you would recommend it?