Amp Shop

Stu went to a real ale festival in Brighton today, so I dropped him at central. The station is in an odd part of town, one that we rarely visit. Among the few shops there, are these two guitar shops, separated by a drum shop in the middle. When the shutters go down at night they look just like amps.

Are all three shops, or any combination of the shops partners, or are they all bitter rivals with exceptionally poor planning skills?