A/V failure during a presentation is always an embarrassing and frustrating experience. That is why you need to hire the best audio support Singapore possible. No matter how much you prepare, you may not be ready for everything, especially if you are prioritising the content of your presentation. But, there are ways to avoid this mishap.
If your budget allows, hire a reputable technician to take care of your AV needs. The technician will set up and test the gear you will be using. They can also stay on-site to jump in and take care of any issues that may arise with the gear. Also, it makes sense to have a backup gear onsite. Backup gear like a projector, laptop, or microphone should be prepared on hand as they will help fix the failure in a snap.