Vintage Logan Laboratories PAIR Mono Tube Amplifiers valve stereo mono block amp

Here is an extremely rare Pair of Logan Laboratories a1-70 Monoblock Amps. These were designed and hand built by Ed Logan, a brilliant engineer at Martin Marietta. All parts are military grade as he bought them from his workplace. These have 4 Yugoslavia Ei Kt90 tubes on the rear each with it's own gain control knob and a 6336A on the front side.

One huge transformer and two smaller ones. Then there are the 6 ridiculously large capacitors.

On the front is a meter with various settings. The rear has a standby switch, gain control and two fuses. These take a common 3 prong computer type plug. Some paint loss on top of the large transformers.

The "L" on Laboratories missing on one amp. I estimate these to weigh around 60lbs each.