Splitting and Splicing Pre/Pros and Amps

[cumplong]

I have a question about a set-up in order to A/B the pre/pro section of a B&K AVR-507 and an Outlaw 990.

I'd like to simply use splitters from the power amps to both pre/pro outputs at the same time.I figure that as long as I don't have them both powered up at the same time that there would be no problem.

I've used splitters at one pre/pro output to two amps but never two separate pre/pros to the same amps.

So the question is - is this safe to do? Would the amp read extra resistance from the (off) pre/pro and drop the impedance to an unsafe level? Or would something else unwanted occur?

The amps are Van Alstine 240/3 EX and B&K 1430 II.

Thanks for the advice. I'm sure the best way would be to go buy an A/V switcher, but this seems like this might work, provided both pre/pros aren't running at once. Comments?

 

[agarwalro]

Using Y splitters to combine two sources (in your case pre-pros) is a no no, though the reverse is perfectly okay.

IMO, be safe and get an appropriate switch or mixer.