What interface?
What input?
Motu 828es. The front inputs are a Hi-Z jack/XLR combos.
Was it a High Impedance instrument input or just a line input? An impedance mismatch would reduce the highs on the interface so that could easily account for the difference you described.
Like I said it's not the highs that are impacted, rather the lows.
On the Kemper, did you use Analog DI or DI High/DI Low? Analog should literally be like plugging into a DI box wheres the others go through A/D converfirst.
With the Kemper player I could only select DI High or DI Low (and picked Low as it seemed the right match level-wise)
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