UR1 and UR1M Input Impedance

FAQ #3439 Updated February 16, 2018


What is the actual input impedance of the UR1 and UR1M bodypacks?


In the UR1, the input impedance is 1 megohm in all three input trim settings(-10 / 0 / +15 dB). All three settings have a capacitor added to mimic the capacitance of a 10 foot (3 meters) guitar cable.

The UR1M Micro-Bodypack Transmitter has a different input stage from the UR1.

In the UR1M, the input impedance is 200 kohms at the 0 and +15dB settings. In the -10dB setting, the input impedance is 900 kohms. Again, all three settings have capacitance added to mimic a 10 foot guitar cable. We recommend using the -10dB setting for guitar.

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