ESPectrum review
A focused, cycle-accurate Spectrum emulator for dedicated ESP32 hardware.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
ESPectrum is an open-source ZX Spectrum emulator for hobbyists using compatible Espressif ESP32-powered boards. It emulates the ZX Spectrum 48K, 128K, Amstrad +2A and Pentagon 128K, along with Microdigital TK90X and TK95 systems. The project is aimed at people building or operating dedicated hardware with VGA or CRT displays, PS/2 input devices and SD storage rather than users seeking a desktop or mobile application.
Its strongest area is emulation breadth within that hardware setting. Cycle-accurate emulation is paired with realtime TZX and TAP tape loading, SNA, Z80, SP and custom ESP snapshot loading and saving, plus Betadisk emulation with TRD and SCL support. SD-card navigation includes folders and search, while custom ROM flashing from the SD card adds flexibility for hardware-based collections. VGA and CRT 15 kHz output modes also suit different display setups, and the project includes PS/2 keyboard, joystick and mouse support, DB9 joystick support and audio input compatibility.
The main trade-off is platform access. ESPectrum runs on compatible ESP32 hardware, so choosing it involves a self-hosted device and the peripherals needed for the intended configuration. That makes it a good fit for dedicated Spectrum recreations, CRT-focused setups and users who value hardware control, but a poor fit for anyone wanting quick access on a conventional computer or mobile device. Choose ESPectrum for cycle-accurate emulation and physical hardware integration; choose a different emulator if broad operating-system availability is the priority.
ESPectrum pros and cons
- Where it wins
- Cycle-accurate emulation across several Spectrum variants
- Tape, snapshot and Betadisk support with multiple formats
- VGA, CRT, PS/2, joystick, mouse and SD-card support
- Where it doesn't
- Requires compatible Espressif ESP32-powered hardware
- Not designed for conventional desktop or mobile operating systems
- Peripheral and display support depends on compatible hardware
ESPectrum fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update