I've had the half stack for probably a year and half. The tubes have been upgraded to some vintage Mullards from the 1970s (Mullard ECC83 / 12AX7 is the type, I believe; my friend was fortunate enough to be doing research in a physics/EE lab and had some spares lying around). The amp is in great condition, never knocked over or thrown around. It sounds great, I'm just ready to buy a Vox AC15 and don't have a need for two amps. PM me for pictures/ if interested.