- You cannot add another "Behringer HA 400/Micro-Amp 4 channel Stereo Headphone Amp" to your cart. View cart
Martin Porta-Con Acoustic Pre-Amp
$100.00
This is a Martin Acoustic guitar pre-amp that has volume, bass and treble controls that is in excellent working condition it runs on a single 9v battery. See photos for they are part of the description. We will let this unit go for $100.00 plus shipping (US Only) or in store local pick up.













