Sharp GF-9090
The GF-9090 was introduced in 1976. Its styling is very conservative, but it's still popular among collectors for its good quality and sound. It has old-school analog VU meters, dual antennas, and APSS (Automatic Program Search System). It was available in both silver and dark gray. There were also two different types of grills, depending which year it was produced. The output power is 2x3.5 watts Sinus (RMS).
A copy of the service manual can be purchased HERE.
Specifications:
Dimensions: 485 x 240 x 115 mm.
Speakers: 16cm woofers, plus horn tweeters
Output power: 2x2.2W minimum, 2x3.5W maximum RMS, and 2x5.5W "music power".
Tape speed: 4.8 cm/sec
Wow and flutter: 0.15% WRMS
S/N ratio: 50 dB
Frequency response: 40 to 15,000 Hz (CrO2 tape)
Model variations: GF-9090C, GF-9090E, GF-9090H, GF-9090HB, GF-9090X