I do not know where the seller has this information forth. On the package and the part itself is anyway nothing "stabilized" by or "regulated".
The actual model number is MW3N06GS and originates from the manufacturer Minwa Electronics. There is probably a mistranslation. Because with "regulated switching" means the manufacturer that you can regulate the voltage levels with a rotary switch, but that has nothing to do with a stabilized output voltage (regulated power supply): [...]
Who so therefore sensitive equipment and musical equipment (amplifiers, pedals, etc.) wants to operate - AWAY !!!!
Dear seller, please delete the "stabilized" or replace with "Independent".