🚀 go-pugleaf

I had an idea to design and build an FET small signal amplifier based on 
a class B transformer coupled valve amp design, basically to see what 
an electric guitar would sound like through it.

However, in the electronics catalogues I have available (and a couple of 
shops I tried),  it appears that small audio frequency (AF) matching 
transformers are not readily available.  

Is this the case ? Is there any technical reason why small signal AF
transformers are a problem - I don't understand transformer technology very
well. The small transformers that are available seem to have frequency
responses way above audio. I saw some post here about why HF transformers can
be smaller than AF transformers, although the original post has expired on this
site. Does this imply that AF transformers *are* readily available, albiet 
physically large ?

Thanks in advance,

Luke