UM Smart Sound App firmware files

 

Fully supports the IOS operating system

 

ClassAB_v2.2.5    

 

ClassD_v6.2.5    

"ClassAB_v2.2.5" refers to a Class AB amplifier, while "ClassD_v6.2.5" refers to a Class D amplifier. Class AB amplifiers have better sound quality but slightly higher power consumption and shorter battery life.

"ClassAB" is the default firmware for the product.