Rainbow 2 vs Double Rainbow: Which Quasar Science Tube (and Length) to Buy

Last updated: 7 August 2026. Prices are in AUD and correct at the time of writing, check the linked product pages for live pricing and stock.

Pick the Rainbow 2 if you want the lighter, more affordable everyday tube; pick the Double Rainbow when you need more output and denser pixel effects. Then choose your length. Both share the same RGBX colour science, so this is really a decision about power, pixels and budget. For how the whole system works, see our complete Quasar Science guide.

Same colour, different output

The Rainbow 2 and Double Rainbow both deliver RGBX colour, 1,750 to 10,000K, over a billion colours, CRI up to 95, and both are fully pixel-addressable with the same onboard FX engine. The difference is the Double Rainbow's second row of pixels, which gives it roughly double the output and a denser pixel array for finer chases and gradients.

When to choose Rainbow 2

The Rainbow 2 is the right default for most people. It's lighter, more affordable, and comes in a 2', 4' and 8' range, so it covers everything from a hidden practical to a long wall wash. Choose it for interviews, content, run-and-gun and anywhere you're hiding tubes in shot or edging a set, and when you want the most tubes per dollar to build bigger Ossium panels.

When to choose Double Rainbow

Step to the Double Rainbow when output matters, you need the tube to actually key or push through diffusion, or when you want higher pixel density for smooth pixel effects and gradients. It's the heavier-hitting choice for narrative and commercial work where a tube has to do real lighting, not just accent, in 2' and 4' lengths.

Which length?

2' is the go-anywhere size for practicals, car work, tight spaces and hair/edge light. 4' is the all-round workhorse, long enough to light a person, short enough to travel. 8' (Rainbow 2 only) is for long wall washes, full-length edge light and big vertical sources. Many crews own a mix of 2' and 4'.

Single tubes or Ossium panels?

If you mostly use tubes as accents and practicals, buy individual tubes and a few rigging bits (frame, magnetic feet, baby pin). If you want a proper soft source, plan for the Ossium bank shells or a multi-tube frame with a softbox, that's where several Rainbow 2s gang into a large, controllable panel. Either way, budget for multibank power so you can run several tubes from one source. These are covered in the complete guide.

Quick recommendations

First tubes / most versatile: a pair of Rainbow 2 4'. Practicals & car work: Rainbow 2 2'. Long wall wash: Rainbow 2 8'. Tube as a key or through diffusion: Double Rainbow 4'. Ready-to-shoot set: a Rainbow 2 Quad Kit or Double Rainbow Double Kit.

Frequently asked questions

Is the Double Rainbow brighter than the Rainbow 2?

Yes, the Double Rainbow has two rows of pixels giving roughly double the output of the equivalent-length Rainbow 2, along with a denser pixel array for finer effects.

Do the Rainbow 2 and Double Rainbow have the same colours?

Yes, both use the RGBX Spectral Science Color Engine with the same 1,750 to 10,000K range, over a billion colours and CRI up to 95. The difference is output and pixel density, not colour.

What length Quasar tube should I buy first?

The 4' is the best all-rounder, long enough to light a person and short enough to travel. Add a 2' for practicals and tight spaces, and an 8' Rainbow 2 for long wall washes.

Which Quasar tube is best as a key light?

The Double Rainbow, thanks to its higher output, is the better choice when you need a tube to key or push through diffusion. The Rainbow 2 is ideal for accents, practicals and edge light.

Black Flag is the exclusive distributor of Quasar Science in Australia

Where to buy in Australia

Black Flag Distribution is the official Australian distributor of the professional film, television and production brands featured in this guide. We supply an Australia-wide network of authorised retailers and stockists rather than selling direct to the public, so there is a local dealer who can help wherever you are. To check pricing and availability and to buy, use the Black Flag Distribution store finder to find an authorised retailer or stockist near you. Search our store finder to locate your nearest Australian stockist and purchase from an authorised dealer.