A4 Allroad 2ltr B8 2011 with sonar headlights

[Q19]

We have a 2011 A4 Allroad and the previous owner had Sonar SK5481 + 5482 projector headlights with DRL fitted together with HID kit.

Question: what brand/number bulb should be fitted - as they are now they are not very bright - they are on H7 halogen bulbs.

Thanks