Because it is not balanced... (though one can option it).
From the LTA User Guides Section:
I don't get why this info isn't in LTA's main page for their Preamp. For example, a list of Inputs and Outputs.
Even worse is not including a photo of the rear panel on the same page.
From the LTA User Guides Section:
Inputs: There are 5 inputs to the microZOTL Preamplifier. All are single ended (not balanced). Four are RCA stereo pairs. Input 5 uses combination XLR/Phone Jack inputs. These are not true balanced inputs unless the optional True Balanced Input option has been purchased and configured at the factory. Connect your DAC, CD player, Phono Preamp or other line level device to these inputs.
Preamp Outs: There are two identical preamplifier outputs. These are also single ended (not balanced). Connect your amplifier or subwoofer to one of these outputs.
I don't get why this info isn't in LTA's main page for their Preamp. For example, a list of Inputs and Outputs.
Even worse is not including a photo of the rear panel on the same page.