[Elecraft] EV 630 microphone

[Ben Dalfen]

I have an Electrovoice EV 630 microphone that I purchased in 1958 during my 
1st broadcast job. I used it for record hops.
For sentimental reasons, I would love to use it with my K2 but the problem 
is the dynamic microphone impedance is 50 ohms.
Anyone know where I could purchase a 50 ohm to 600 ohm microphone matching 
transformer?
I found one in an online Hammond Transformer catalogue, but they are asking 
$45 ;-)
Anyone have any other ideas how I can use the mic with a K2?
Ben Dalfen 4X1BD