[quote name='ikay' timestamp='1389810033' post='2338178']
From this review - [url="http://www.bgra.net/2004/review.php?id=746&type=bass"]http://www.bgra.net/...d=746&type=bass[/url] - the controls are master volume, pan pot for P-J pickup blend, bass and treble boost/cut, a preamp on/off switch, and a pan pot for the P-J and piezo blend.
[color=#282828][font=helvetica, arial, sans-serif]Yes, made in Japan.[/font][/color]
[/quote]
I think the switch actually changes the mids. There's no mid control on the bass, but the switch switches in a pre chosen cut or boost at a frequency already in there.