Product information: 

Color classification:
6SN7-HQ, Carbon Crystal CV181-H, E-6SN7,6SN7-T,6SN7,E-6SL7,6SL7-T,6SL7, Bodian 6SN7
Features: Transparent and delicate sound, wide sound field

Warranty: 15 months       

Packing list:   

Two electronic tubes and a color box