One of the Holy Grail’s of boombox collecting is the Sharp GF-777z or GF-777. One of the first boomboxes with double cassettes it was also produced in Japan as model GF-909. The GF-777 has six speakers – two woofers, two “sub” woofer’s and two horn type tweeters. It weighs almost 27 pounds (12.2 kg) not inlcuding the 10 D sized batteries required to power it.
The boxes routinely sell for $500.00 to over $700.00 depending upon condition. I recently saw one sell for $19.99 via buy it now. LOL. Perhaps the seller didn’t know what they had? Someone got a good deal!