Successor to Sinclair ZX Spectrum +3 in Amstrad Lineup

This article examines the final evolution of the Sinclair ZX Spectrum brand under Amstrad ownership, specifically identifying the model that followed the ZX Spectrum +3. It details the release of the ZX Spectrum +3B as the final revision and explains how Amstrad eventually discontinued the 8-bit line to focus on IBM-compatible personal computers.

When Amstrad acquired Sinclair Research’s computer line in 1986, they inherited the popular ZX Spectrum range. The Sinclair ZX Spectrum +3 was launched in 1987 as a significant update, featuring a built-in 3-inch floppy disk drive and a redesigned case. While it was a commercial success initially, the home computer market was rapidly shifting towards 16-bit architectures and PC compatibility. Amstrad needed to streamline their production and align with emerging industry standards.

The direct successor to the ZX Spectrum +3 within the Amstrad lineup was the ZX Spectrum +3B. Released in 1989, the +3B was not a entirely new machine but rather a cost-reduced revision of the original +3. It featured a redesigned motherboard that consolidated chips to lower manufacturing costs and included a modified disk interface. Externally, it remained nearly identical to its predecessor, maintaining the same form factor and functionality.

Following the +3B, Amstrad did not release any further models under the Spectrum branding. By 1990, the company began to phase out the 8-bit computers entirely. The strategic focus shifted to the Amstrad PC range, such as the PC1512 and PC1640, which offered greater processing power and software compatibility. Consequently, the ZX Spectrum +3B stands as the final model in the lineage, marking the end of an era for the iconic British home computer.