Thanks to you both for the information on the manuals and the bulbs, much appreciated. And the kudos on the 2205, It is definitely on my short list for amps, and have to admit, Macs appear to be well documented, well supported, and parts plentiful I should have gone with the Mac months ago--I bought a used Aragon 4004 Mk2--a well respected amp mind you--the owner said the amp was in great shape. NOT. When I opened it up due to a channel cutting out, I found 2 of the PS Filter caps had leaked severely, corroding and eating up the PCB the 4 are mounted to--I found the "bleeder" resister NOT EVEN soldered to the board! Goo film everywhere--caps are proprietary and made of "unobtainium" so I have to make some mods to use standard replacements. If I had bought the Mac, I would have been listening to sweet music at this point. Now I will continue searching for the right one while I repair this. It sounded quite nice mind you for the few short hours it played....Happy Thanksgiving, Pete