Note: this list is for one Assembled and tested Tube preamp board.The circuit is base on the famous D.KLIMO MERLIN



Input voltage:  0-AC250V     50mA

                        0-AC9V        1A


For 2 boards will need 2 X 250VAC   and   2 X 9VAC



Use Tube:  6DJ8   6922  6N11  E88CC  6H23 etc   (list price not include the tubes)


Each PCB Size: 188mm*86mm    height about 70mm


Gain:  about 10 times





Package include:  AssembledTube Preamp board     X 2pcs




We are not have the Schematic for this board!!!