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There isn't much information out there about the Aiwa CS70 boombox. It was produced sometime around 1979 in Japan by Aiwa which was a very successful company in the 1970's and 1980's. In fact, they produced Japan's first cassette tape recorder and stereo cassette deck.

The CS70 was flanked by the CS80 and the upper end and CS50 at the lower end. It retailed for 54,800 Yen when it debuted.

It features an Auto Music Search system that works with up to 9 songs. It also has a Karaoke Mixing Mechanism.

Inputs include:

Line IN
Recording Mic
Mixing Mic
Phono
Ground terminal
Player sync terminal
External antenna terminal for FM

Outputs include:

Line OUT
External Speaker
Headphone

The CS70 has two 12 cm speakers and measures 490 × 320 × 135 mm. It weighs 6.2 Kg.

The back of the box includes the battery compartment and an antenna selector switch.

The Aiwa CS70 isn't an easy boombox to find. If you see one at a reasonable price - pick it up.

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Sharp GF-1000

I think this is easily one of the best looking boomboxes out there. It's the Sharp GF-1000 and is part of the famous Sharp four woofer family of boomboxes including the GF-767, GF-777, and GF-999. It was only offered for sale in Japan in the early 1980's so it is very rare to find one in the U.S. While it looks good with the cobalt blue speaker grills on, it looks even better with them off.

sharp-gf-1000-front-no-grills

The white speaker cones and chrome dustcaps really stand out and give it a sophisticated and clean look. The GF-1000 has four 16cm woofers and two horn tweeters. It also has two cassette decks both capable of playing normal, chrome and metal cassettes.

sharp-gf-1000-corner

It features:

29.6 x 14.9 x 6.5 inches
AM/FM Stereo Radio-Tape Recorder
Double-Cassette deck
APSS (Auto Program Search System)
Normal, Metal, Chrome Tape Capability
30-18000Hz (Metal)
Speakers: 2x 160mm Woofer, 2x 160mm Sub-Woofer, 2x Horn Type
Power Source: DC 15V or 10 "D" battery
Weight 28 lb

Sharp GF-1000 Boombox
It has a four-channel power amplifier with adjustable bi-amping and Per-channel power control for super-woofers. Another interesting aspect of the GF-1000 is that it's FM tuning range is from 76MHz to 108MHz which is not normal for a domestic Japanese boombox as their FM dial only reaches 90MHz.