Hello, I have an Alesis M1Active 320USB studio monitor. It got bad, it is not producing any sound. I was told my amplifier was damaged. stories short. The original amplifier has only 4 numbers written on it as the other numbers were rubbed off in the course of repair. the numbers left are: TDDA20 . Please can you confirm the complete number for me so I can go for a replacement?

Music - Alesis - M1 Active 320 USB Speakers