Vintage Rare Yamaha TA-70 Solid State Amp and Cabinet VERY Rare! #28870

Vintage RARE Yamaha TA-70 Solid State Amp and Cabinet VERY RARE! 
Cosmetic Condition This amp is in good condition and works well.  There are visible signs of use with some discoloration on the tolex and grill cloth.  There are some scuffs and gouges in the tolex of the cabinet and head (see pictures)  This amp has been thoroughly tested and checked out by our master electronics technician.
Now here is one for the collectors out there. I have never seen one of these in the flesh before, and once it goes I doubt I ever will again!
In the early 1970s Yamaha decided to enter the guitar amplifier market, and in doing so introduced what would be amongst the most individual amps ever made. Not only were they amongst the first solid-state amps offered (with no fewer than 28 transistors and 10 diodes!), but their shape, with an upright stance and a very narrow triangular profile, is their most striking feature.
This shape was largely made possible by the use of Yamaha's new "Natural Sound speaker", which was a very large, flat, irregularly-shaped diaphragm made from polystyrene, driven by an off-centre standard voice-coil/magnet assembly.  They were also used in the well-regarded Yamaha Electone organs of the time.
The speakers are not to be pushed too hard, coils can heat up and melt the cone