Hey guys, this message is for the guys whom have owned and figured out the dos and don'ts with the Sunfire tube control center. I have never had nor know ANYTHING about tube gear ! Over the weekend I made a long drive to pick up a supposedly original owner unit that was recently overhauled by Roland at -Hi-Fi. The owner said Roland did not like the tubes the owner had put in there. The control center does have the phono section. Ive read that these units (although magnificent), are very finicky to which tubes used. Please help guide me to which ones to use, and where to purchase. Thanks in advance guys !