peckoon

Then, how can I listen to the track with 'Make Send' as a solo?

Unlike the pictures I saw before purchase, there are only MS buttons and no M buttons and S buttons. They only come out when I press the MS button. S is a useless feature that allows you to only listen to tracks that send audio signals. (It's just a function that you can do on a track.) Press M and nothing changes. I like this device. However, I hope there will be a button to listen only to the sound of the track with the MAKE SEND.