Quick question on 12v power supply

I have electrostatic speakers that use a wall wart power supply . The wires have come loose over time from coming in and out of my rig over the years . I am looking to buy new ones and have ordered a pair of 12v from Audio Advisor . They are the ifi model shown here
https://www.audioadvisor.com/prodinfo.asp?number=IFIPOWER&variation=12V

Looking at all the 12v available for sale ,I do not see what is written on the Kings supplies (12v 250ma) . Is this 250ma number of importance ?

Thanks,mike.