Does GLM have a mono mode to allow use with only one monitor? December 29, 2020 12:24 Yes, there is a mono mode in GLM 4 and yes, you can use only one monitor. Related articles What is safe operating temperature that is shown in GLM software? I am used to a high level of bass in the monitoring, can I boost bass with GLM? What are the advantages of GLM 4 over other types of calibration systems? I'm using MacOS and I get error "Could not upload setup file to the Cloud!" with GLM. What to do? Why does GLM not fix dips on frequency response? Comments 0 comments Please sign in to leave a comment.