Comparing Phono Pre-Amps

Oh Boy, here I go...

Do you all feel there is a easier way to compare Phono Pre-Amps besides connecting/disconnecting each one?

I have thought about if there is a way to take the output from a TT and send it to 2 Phono Pre-Amps and from there, those 2 pre-amps could be connected to an Integrated and from there, you simply switch back and forth?

I have been looking but have not come across such a device.

From what I have researched, most comments have stated to simply have long listening sessions with both back and forth and I get that but wish there was a ability to switch immediately between two.

I know the thought is doing so would introduce all kinds of unnecessary variables that would ultimately degrade the sound and defeat the whole purpose.

But I guess from a technical standpoint, can it be done?

Thnx