Do Nady amps have built-in rumble filters?

[peted]

I have read that the Behringer amps have a default rumble filter at 5Hz.

Anyone know about the Nady amps?

The specs for the XA-900 are at the link below:
www.nadywireless.com/pdf_files/spec_pdf/XAseriesspecs.pdf

It lists frequency response as -3dB from 5Hz to 50 KHz. Does this mean there is no response below 5Hz?

[ThomasW]

No it means the output is 3dB down at 5Hz so it probably has some abilities below 5Hz. But very few amps are designed to run down to DC (0Hz)