changer

noun
1
a person or thing that changes something, usually in order to improve it
تغییر دهنده, دگرگون کننده
see also game changer
2
a piece of equipment that holds several discs, etc. and is able to switch between them
تعویض‌کننده, تعویض‌گر دیسک, دی‌وی‌دی چنجر, دیسک‌گردان
The car comes with white leather seats and a 6-CD changer.