[targa911S]

The power section of this amp is solid state MOSFET, so all the listed tubes are for the pre=amp only. There is a voltage adjustment knob on the amp so I can dial up more or less tube sound. I looked at an Ampeg SVT-CL all tube amp but it weighs in at a whopping 85 pounds and to re-tube it with say Winged C tubes is around $700.00. Too much weight, to expensive to maintain in my book. Besides that I play in a variety of bands with different styles of music. I don't always want a tube sound. It will be nice to dial up the tone I want.