Thor Audio TPA 30 MK I Monoblock Amplifiers. This is an earlier Thor with brass top cover. It is in excellent condition cosmetically and functionally with the exception of a very small scratch on the top plate of one amp (which is barely visible, you have to look very hard to see it). All the signal caps have been upgraded with Audio Note Copper Foil capacitors. The Binding Post and RCAs have been upgraded to WBT Nextgen Silver 0210 Ag MS for the RCA and 0705 Ag for the binding posts. The serial numbers are not cosecutive (153 and 159) but they came that way from Thor Audio. Paypal + fees.