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Original Message
RE: I don't know anyone vertical biamping but
Posted by pictureguy on May 28, 2017 at 09:36:21:
You are 100% on that. The preamp in use, a Parasound P5 has vanishinglly low output impedance and would be somewhere North of unlikely to have a problem with the halved input impedance of the A21 / 23 series amps.
Do you know how much SPACE is around the attenuator? On my 'dream list' would be replacing it with a stepped attenuator. I know I can fit in a pair of fixed resistors, but would like to preserve full adjustability.
The sub output of the P5 is too good to pass up, so no additional connections needed. Or splitting.