String in the Pre-Strung MG Rads from TW?

[meowmix]

Just grabbed another 2 MG Rads from TW earlier today- according to TW's site, they come prestrung with sonic pro. Any idea regarding tension or how long the string's been in the rackets?

 

[brokenRPM]

i think it's mid +2 so 58? my guess is that they are 93 days old.