THD 1.0% (at 12W). Vacuum tube 5881A×4 , 6E2×2, 6N1×4. Input sensitivity 0.25V(1kHz). 2 Missing item or get wrong item or Get damaged items, DOA (dead on arrival).The item "YAQIN MC-5881A vacuum tube amplifier ultra-linear push-pull Integrated amplifier" is in sale since Sunday, July 7, 2019. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps". The seller is "hifimusic2014" and is located in , . This item can be shipped worldwide.