Square 2.0
![OLA Logo_2-0](/content/dam/messefrankfurt-redaktion/prolightsoundguangzhou/image/plsg21-fringe/OLA%20Logo_2-0.png)
Participating brands:
4-Acoustic, Alcons, Amate Audio, CODA AUDIO, Harmonic Design, LiSA, Martin Audio, ProAudio Technology, SE Audiotecnik, Soundking, TSA Audio
Square 4.0
![OLA Logo_4-0](/content/dam/messefrankfurt-redaktion/prolightsoundguangzhou/image/plsg21-fringe/OLA%20Logo_4-0.png)
Participating brands:
FANE, TK SOUND, HZ, MZ AUDIO, WAVK, ZMSAudio, at audio, TPA, LDH Audio
Square 6.0
![OLA Logo_6-0](/content/dam/messefrankfurt-redaktion/prolightsoundguangzhou/image/plsg21-fringe/OLA%20Logo_6-0.png)
Participating brands:
ADMARK, FDB, Real Sound, TASSO Audio, YMESYSTEMS, DE ACOUSTICS, ERIC, Seer, Jazzpro audio, ZSOUND, DMIX, MORIN, XYCAD