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Profoto 331531 D2 500/1000 Flashtube — main product image
Profoto

Profoto 331531 D2 500/1000 Flashtube

★★★★★4.3 (4 reviews)

OEM replacement flashtube for Profoto D2 500 and D2 1000 monolights with 1000Ws capacity.

$299.00*
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Profoto 331531 Flashtube D2 is the official replacement tube for the Profoto D2 500 and D2 1000 monolights, two of Profoto's high-speed studio flash units known for their extremely short flash duration and rapid recycling times. As a consumable component, flashtubes degrade over time with use — color temperature can shift, output can decrease, and eventually the tube may fail entirely. Having a genuine replacement on hand ensures minimal downtime during critical shoots.

Rated at 1000Ws capacity, this flashtube matches the original factory specification for the D2 series. Its compact dimensions of 2 x 1 x 3 inches and 3.2-ounce weight make it easy to keep as a spare in a gear bag. Because it is an OEM Profoto component, it maintains the precise color consistency and flash performance that the D2 line is built around — an important consideration for professionals who rely on repeatable results across multiple exposures and shooting sessions.

Key Features

1000Ws Capacity

Flashtube D2 500 / 1000

Specifications

Brand
Profoto
Model Number
331531
Compatibility
Profoto D2 500, Profoto D2 1000
Capacity
1000Ws
Dimensions
2 x 1 x 3 inches
Weight
3.2 ounces

Pros & Cons

👍 Pros

  • Genuine Profoto part ensures full compatibility and consistent performance with D2 monolights
  • Fits both the D2 500 and D2 1000 models so one spare covers both units
  • Compact and lightweight at just 3.2 ounces for easy storage as a backup
  • User-replaceable design allows quick swaps without sending the monolight in for service

👎 Cons

  • Premium price point consistent with Profoto's proprietary parts and accessories
  • Only compatible with the Profoto D2 series and cannot be used in other Profoto monolight lines
  • No included instructions or installation guide in the packaging
  • Flashtubes are consumable items with a finite lifespan that will eventually need replacing again

Frequently Asked Questions

This flashtube is designed specifically for the Profoto D2 500 and D2 1000 monolights.
Yes, the flashtube is user-replaceable. Ensure the monolight is powered off and fully cooled before removing the old tube and installing the replacement.
Common signs include reduced light output, inconsistent color temperature between flashes, visible discoloration of the tube glass, or the tube failing to fire altogether.
This is a genuine Profoto flashtube (model 331531), manufactured by Profoto for their D2 series.

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