This listing is for an unfinished, homebrew 4CX1000A twin tube HF amplifier. Construction began in the 1980's -1990's era. It was never completed due to the designer/builder's death (my father) in the year 2000. It has been kept in dry heated storage. There are some blemishes on the front panel. The silver plating has tarnished from exposure to the air and as you can see from the pictures, an occasional cobweb. It is constructed with all new components. Here is a list of the major items. Eimac 4CX1000A (x2) ---- Eimac SK-806 chimney's (x2) ---- Eimac SK-800B sockets (x2) ----- Jennings Radio UCSL-750 (150pf @ 5kv) capacitor. ---- Superior Powerstat variable transformer. ---- RF plate chokes (x2) marked "800" (measures 100uh each) ---- Air variable capacitors (x2) ganged in parallel that read 2000pf when fully meshed. ---- Barker & Williamsons tank coil mod # 852 with three switchable taps and the full coil position. ---- 1000pf @ 5kv doorknob capacitors (x6) ---- Triad F-21A filament transformers (6.3volt CT @ 10amp each) (x2). --- dual custom panel mounted gear drive reduction for plate and load controls. ---- Jennings Radio RB1D vacuum relay. ---- Amphenol BNC type RF switching relay. As you can see by the parts list, it is constructed with the very best quality components. The two SK-800B sockets alone are worth over $1200 each. Even if the amplifier is never completed, it is a smorgasbord of parts. I will consider parting it out if it does not sell as a complete unit but that will be quite sometime later. The air variable capacitors are twins. I do not know the mfg. due to the name plates being obscured. Its overall dimension are19w x 12-1/2h x 22d. it has been designed as the RF deck portion of a rack mounted amplifier. It has the standard 18-inch-wide rack mounting panel as its faceplate. I am selling the amplifier "as is". I ship U.S.A domestic only. The amplifier is a heavy, bulky item so shipping cost will be substantial. I do not ship outside the U.S. I am not enrolled in the global shipping program, nor do I want to be. I give feedback on an item when I receive feedback on an item. ALSO NOTE THAT EBAY WILL REQUIRE A SIGNATURE UPON DELIVERY WHEN THE VALUE OF AN ITEM IS OVER $500. IT IS EBAY'S MANDATORY POLICY TO DO THAT. THANKS FOR LOOKING !