Bose 551 Spatial Control Receiver Model 108787+ 901 Series IV + update Drivers!

Description

Recently acquired from the original owner.  I have cleaned and conditioned everything, although it did not need much as it had been in covered closet storage for over 15 years. The condition on everything is amazing, like a time capsule at least a 9.5/10.  Everything seems to function properly (not the "touch BOSE" on/off?) and it sounds amazing. This unique amplifier was made specifically for these Series IV speakers and the amp already has the EQ system built in, no need for the stand alone box.
I connected the 3rd speaker wire and the spatializer seems to do something to the sound, but I have no reference so it sounds kinda like a phase shift to me???  Zero hum or distortion.
Here is the sweetest aspect.  The owner shipped these speakers to Bose around 1996 and paid them to upgrade ALL the drivers!!!!  Better than a pair of series IV that have had the foams replaced, these are 15 year newer drivers!!  See the label on back of one in my pics.  He had no record, but I randomly checked 2 speakers in each cab and they are all '96.
Own and enjoy a piece of very COOL Mid Century Modernism that sounds and looks fantastic and will continue to appreciate too.
Sold As-is no return simply due to age and weight, however,
You can
PLEASE
read my 21 year 100% feedback and bid with confidence.
G
round
insured shipping
to the lower 48 ONLY!! and
professional packing
by me.