Hi, I recently bought this dibox on a tomann, the sound is good, but the upper input jacks of the diboxes are not reliable, they are not soldered to the board, but simply glued to the lower through inputs with glue! Yesterday, at work, we accidentally stepped on jacks when they were plugged into the dibox, and the dibox jacks popped out of the bottom thru jacks, and the sound disappeared! I do not recommend using the upper entrances!