Here is a Beautiful Vintage Original McIntosh Industrial type K-107 Tube Amplifier Power Supply. Serial Number 1162. This power supply is for use with the MI-200 / A-109.Serial number 1162. It comes with M-147C & M-148A transformers and 4- 5U4 and a solid state 5Y3 as shown. According to the previous owner, This came out of a Tektronix lab and was in operation until fairly recently. This was brought up slowly on a variac and tested with an amplifier and worked fairly well. Note tha...t it will likely need a full tune-up. The AC cord should be replaced as well. I will also be listing an additional MI-200 / A-109 amplifier and Power Supply for parts or repair. This will be well packaged for shipping. Payment expected within 2 days of listing end. Due to the nature of vintage electronics this is being offered "as-is" - no returns. Thanks!