Hiya
Those are bi-xenons using a d2r bulb for headlight/main beam. There's a seperate halogen bulb for flash and also comes on with main beam (the round one in the corner)
There are modern d2r osram bulbs available that claim to be a good bit brighter, but depends on the age of the bulbs in there as they do dull and change colour temperature with age
What you might also notice is that the sidelight bulb is both pathetic and very yellow. There are led options but unless you want to see a pcb through the front of the headlight your options involve some dismantling to modify the reflector to accept a chunkier housing bulb. I've done this on mine with detailed pics, so worth looking for a thread on headlight refurb 
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===SOLD===2002 Audi S8 D2 Final Edition (yes, really) in Avus Silver with purple extended leather===SOLD===
2011 S5 Sportback in Phantom Black with black Super Sports leather, 9x20s, tech pack high, adaptive xenon plus, intelligent key, memory seats pack, sunroof, B&O, Audi Drive Select & quattro Sports Diff, DAB, parking system plus
2015 VW Golf GTI Performance Pack in Carbon Grey with black Vienna leather, tech pack (Discovery Pro nav & Dynaudio), DCC, factory towbar and retrofit RVC
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