Tube Power Amplifier 3W

Power output 3W/8 ohm - 1KHZ .Input sensitive 600mV for 2W.
Distrotion 3%.Frequency response 22HZ-50KHZ -3dB.s/n 90dB
Part List :
R1= 22Kohm C1-7-9= 100nF 1KV V1= ECC81
R2-3= 1Kohm C2= 220uF 350V V2= 6BX7
R4-5= 1.5Kohm C3= 150nF 400V T1= 220V@2X250V/6.3V/6.3V
R6-7= 470Kohm C4= 100uF 25V T2=Audio transformer
R8-9= 1Kohm 2W C6-8= 2X100?F 350V
RV1= 250Kohm Log. pot. D1-2= 1N4007