No definitions found for 'AF amplifier'
Perhaps one of these:
avon, pa,
aphaniptera,
avon park, fl,
avena barbata,
avon park,
abnf,
a bone of contention,
avonia, pa,
avon-by-the-sea,
apion apricans,
avon-by-the-sea, nj,
avon by the sea,
afampe,
abnepos,
abampere,
affenpinscher,
avena fatua,
abamp,
aphanipterous,
a-bomb