I'm selling a Harrison labs FMOD 900073. It's a subsonic filter @ 20Hz. It's basically used with amps that don't have a subsonic filter and you'd like one. I bought this from theZEB a while back, but then bought an amp with a SSF so I have no need for this. Took it out of the box to test once.
$15 shipped. Paypal confirmed only.

$15 shipped. Paypal confirmed only.
