Very well built. Looks like the former owner replaced the 6C33 tube socket and got it all mucked up. I ordered a replacement and when it arrived, did the surgery. I found a new resistor and replaced. Now, no more noise, soundstage opened up, bass got tighter and midrange came forward.
Units are ugly.
The blue power caps stick out of the chassis. The units are not mirrored. Component quality is very good. Some better parts could have been used, but not many.