Why Would a Turntable Need More than 1 Arm ?

Yes, Iwant to add the second arm to my Kuzma,it would be for monaural cart. Sweet!
Then I already have three turntables...
I only use two of them, but the Rega P5 has a Benz Glider.Mmmmm nice
The Kuzma has a Dynavector 17D3 .. also MMmmmm nice

In addition to stereo/mono reason, one might want different arms/cartridges for different music or/and different experience. How about two turntables with two/three arms each?

Is the use of a Mono/Stereo switch on a preamp/phono stage as effective an alternative to an arm (be it the first or a second arm) mounted with a mono cart/stylus. Is there any trade-off to doing it this way? Is the result the same? Thanks, bird

One arm to play the record and a second arm to flip it over.

Many of my customers have more than 1 cartridge.

A single table with dual arms saves space and offers a degree of flexibility not found in a single arm configuration for the hobbyist who wants to experiment with different tonearm/cartridge combinations.

Dealer disclaimer.