How can I use this Transformer?

[LeoJar]

Hi All,

I just got a pair of a AF Matching Transformers. The P:S ratio is 600/150ohm to 600ohm. This means it is a 1:1 or 1:4 transformer.

Can I use this as a matching transformer between PCM63k and tube buffer?

Or other usage that you may suggest?

Thanks in advanced,

Leo from Hong Kong