Mbox2 - Line vs DI inputs

[improvpwnd]

What is the difference between the DI and Line (TRS) inputs on my Mbox?

[markjazzbassist]

i believe there ARE preamps in the XLR Ins and there are NOT preamps in the 1/4 Line In. Also the line leve is balanced in the XLR in's, and unbalanced in the 1/4 line ins.

[improvpwnd]

There are 3 jacks (XLR, 1/4" DI, and 1/4" Line (TRS)) on each input...

So, there are preamps in the XLR and DI (1/4") inputs, but not the Line (TRS) (1/4") input? So if I plug an bass into the DI it should be hotter than plugging it into the Line (TRS) input? What's the Line input for?

[eb76]

The line in would be for hooking up an external preamp or other external device that ouputs a balanced signal on a 1/4" jack. This way you're not running a signal through a second preamp.