Delta
A
Russian clone of ZX Spectrum+ manufactured in 1991 at a former military plant, near the city of
Zelenograd. Fully compatible with the Spectrum+, the Delta came equipped with 48 kB of
RAM, video output, cassette in/out, two joysticks ports (both
Kempston and
Sinclair), RGB adjustment controls, and its own expansion port for Russian hardware.
The Delta originally sold very well: for a few months it was on the bestseller list in the region.
It has been reported that the machine may have actually been re-baged unsold Spectrums from the UK. Such reports include reports that various stickers cover up hints of made in the UK and official Sinclair badging.
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Possibly related to Delta S-128.