Audio Note (UK) 4300E / 300B Tubes

Audio Note (UK) 4300E / 300B TubesAfter listening to these new valves, that are Audio Note designed and made, we cannot recommend these valves highly enough. These are a huge upgrade to ANY 300B equipped valve amplifier not just Audio Note amplifiers.Specifications:Uf =5VIf = ca1,3ATypical characteristic:Ua =300V Ug1 =-61VIa =60mAS = 5,5mA/V Ri =700 = 3,85Limiting values:Ua =450V Wa =40WMaximum plate current of average tube for fixed bias:Ia =70mAMaximum plate current formanually adjusted grid bias or self-biasing:Ia =100mACapacitances:cg1 =17pF ca =11pFcg1-a =7,5pF