The Luxman selected tube set 12AX7 x 3/12 AU7 x 5 (with LUXMAN logo) 12AX7 is a GE print with the same structure as Siemens from the same period made in Yugoslavia, and the 12AU7 is a high-reliability type (6189) measuring instrument made by GE and seems to be an unused item due to the state of the tube measured by the TV-7 measuring instrument TV-7 made by GE! (KOJIMA Yosuke)
Accessories: original box, warranty card