Alpha-Tek
Here is a list of known Alpha-Tek stereo / ghettoblasters. Most of them were sold in Italy.
Alpha-Tek RK-88
Alpha-Tek RR-1000 (this is an AKA of the Silva Jumbo DS-6006 and the Rexcel JCX-1000)
Alpha-Tek RR-1500 (this is an AKA of the Fujika BPRC-1500, please visit that page for details)
Alpha-Tek RR MX-9 (this is an AKA of the Qualimax MX-9 discolite, please visit that page for details)
Alpha-Tek RS-380