Technics ST-G900
Little is documented about the Technics ST-G900. It was the top tuner in Technics' G-series, and it was built for the Japanese market. That second fact drives almost everything known about the model. The G-900's Japanese FM band makes it all but unusable in Europe without a conversion.
The one well-documented account is a Belarusian collector's write-up of exactly that job. To run an ST-G900 on the European FM band, he used a donor Technics ST-G90 and a screwdriver. The donor's internal boards drop straight into the G-900. All mounting holes are identical, and no modification is required. He also swapped the power supply for 230 V operation. That means taking the donor's metal rear panel as well - or keeping the original panel and doing a little soldering. The ST-G70 is reported to be fully compatible as a donor, too, and appears on the market more often. Cosmetic condition of the donor doesn't matter, since only its internal boards are needed. He found a donor ST-G90 for $40-50, with delivery to Minsk under $100.
Beyond the conversion story, the record is thin. No specifications survive - no dimensions, weight, sensitivity figures, or output levels - and no production years, original price, or period review coverage has surfaced. One forum user asked for other ST-G900 owners to get in touch.
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