Why Would a Turntable Need More than 1 Arm ?

I would love to have a universal turntable with three arms - one for stereo LPs, one for mono LPs and one for 78s. Unfortunately, that would require too many compromises. But a two arm deck is fairly easy to do.

Is that showing off?

Why would a turntable need more than one arm? A turntable is an inanimate object that has no emotions whatever. It does not "need" anything. The owner of said turntable may have any one or two of several reasons for wanting to mount more than one tonearm. These are not hard to imagine.

You need two for stereo (one for each channel)

One arm with mono cartridge for mono freaks.Looks cool too.