All I can say about this handwired amp is that is sounds amazing and looks amazing too. Only selling because I'm buying a head for a new tour in order to transport it on planes. There is something magical in the sonic qualities of the 30W EL84 power stage driving a pair of classic British speakers. The Artisan 30 takes this tone and distils it to a new level of tonal purity. One channel is built around an EF86 with a 5-way Bass Shape switch and the other an ECC83 with the addition of a Voice control for extra tonal flexibility. Class A 30W ComboSwitch for 10W triode mode / 30W pentode mode4 x EL84 output valvesEF86 channel with 5-way Bass Shape switchECC83 channel with 2-way Voice switch and Master VolumeHi and Lo inputs perfect for channel blendingImpedance selector2 x Celestion Vintage 30 speakers