Eurolite AKKU Bar-6 Entry QCL RGBW Bar

We ordered 4 of these lights for using in video studios and conferences.

In general the lights are really good:
- The build quality is solid
- During testing over 2 workdays on 30...50% brightness we couldn't drain the battery below 50% according to the LED battery-indicator.
- At 80...100% you cannot see any flickering on camera when using full 1/50 or 1/60 shutter speeds
- Dimming below 80% you might see a very slight flicker depending on the conditions. Most probably it can be solved by using a clear scan shutter mode.
- The IR remote is responsive and comfortable to use

Unfortunately there is one big drawback which meant we couldn't comfortably use these lights in quiet spaces. The lights emit a high-frequency whistling sound that is quite audible above 50% brightness depending on which LED-s have been turned on. B and R where the "loudest" colors: turning them off or dimming the lights down to 50% eliminated most of the whistling.

For spaces with louder interiors (eg. concerts or bigger restaurants with people chatting) this will not be a problem, but for us this was an unfortunate deal breaker, which is why we have returned the lights to Thomann.