Lotto 3x E90CC SQ Philips Adzam Mullard testato NOS e usato molto ECC189 Heerlen
1x Adzam SQ E90CC – NOS. The E90CC is a premium long-life industrial/military double triode, often considered the Special Quality version of the ECC189 family. 1x Mullard SQ E90CC – seems used, tests strong.