The battle cry of the militant audiophile: 2 ARMS! 2 ARMS!!! I tried it myself 30 years ago with a Micro Seki DDX 1000 but found that I used one to the exclusion of the others. Haven't tried it since and most of the reviewers I trust seem to rely on the single arm approach but there are certainly advantages to multiple arms; ask an octopus. Seriously, I am currently setting up a second table with a removable headshell arm so I can change cartridges fairly easily but I'm not sure how much I will use it. But since my phono stages have two separate inputs it seems a pity not to use them.
