how get it alone mac adress from Object to String or Array of String

Question

hello,
somebody among you, Do you know how to get only mac adress in string type?

I do follows commands:

$A = get-netadapter -name "ethernet" | format-list -Property "macaddress"
PS U:\users\SalvatoreGallitano> $a

MacAddress : 1C-1B-0D-9F-00-00

PS U:\users\SalvatoreGallitano> $a.GetType()

IsPublic IsSerial Name BaseType

---

True True Object[] System.Array

I wold like only mac code in string type but i do not get it.
it say that it is a array with 5 element but i can't access to it.
i tried this:
$a[0] or other numbers but anything.

Answer 1

$a = get-netadapter -name "ethernet"
$a.MacAddress

Answer 2

right!
Why do not i thing first?!
i tried to do it but i did not delete format-list.

Great!
Thanks!