Mathorn AV PRO 256GB (1800MB/s) v4 MK2 Cfexpress Type A Memory Card - by Angelbird

The Mathorn AV PRO 256GB v4 MK2 is a CFexpress Type A card built for stable 8K RAW recording and high-speed sequential shooting. With sustained write speeds of 800 MB/s and read speeds up to 1800 MB/s, it keeps demanding video formats running smoothly and clears cards quickly at the end of a shoot. It is tuned for consistent performance in modern Sony cinema and mirrorless cameras.

Mathorn AV PRO 256GB (1800MB/s) v4 MK2 CFexpress Type A Memory Card (Angelbird) Key Features:

• Professional CFexpress Type A card for 8K RAW video recording
• Sustains 800 MB/s write speed with VPG400 certification
• Reaches up to 1800 MB/s read speed for rapid offloading
• Supports CFexpress Type A v4 standard for high data throughput
• Stable Stream technology maintains constant performance when recording
• Advanced Thermal Management controls heat during intensive use
• Optimised for Sony Alpha and FX series cameras
• Maximum write speed up to 1650 MB/s for responsive capture
• Firmware updatable via Angelbird Type A reader

What's in the box?

• 1 x Mathorn AV PRO 256GB (1800MB/s) v4 MK2 CFexpress Type A Memory Card (Angelbird)

FAQs

What kind of recording is this card designed for?

This card is designed for high data-rate formats such as 8K RAW video and fast, continuous stills shooting. The guaranteed 800 MB/s sustained write speed supports long takes without dropped frames. VPG400 certification confirms that performance remains stable under video loads. It suits professional hybrid and cinema cameras that rely on CFexpress Type A media.

How does Stable Stream technology help in practice?

Stable Stream technology maintains consistent write speeds across the entire 256GB capacity. In real use, this prevents slowdowns as the card fills during long recordings. This is particularly important for 8K video or high-frame-rate work, where interruptions are not acceptable. The focus is on predictable behaviour rather than peak bursts.

How fast is offloading after a shoot?

With read speeds up to 1800 MB/s and sustained read speeds around 1700 MB/s, large video files and RAW sequences transfer quickly with a compatible reader. This shortens the turnaround time between shooting and editing. For busy productions, it helps keep post-production moving without unnecessary waiting.

Is the card suited to demanding shooting conditions?

Yes. Advanced Thermal Management helps protect the card from overheating during prolonged recording. The solid construction is designed for intensive professional use across long shooting days. Firmware updates via a compatible reader help keep the card ready for future camera updates and formats.