HT-MC is an onboard blender EQ that blends the sounds from a Condenser Microphone and an under saddle Piezo pickup.It features a 4 band equalizer - Bass, Middle, Treble & Presence - with Magnetic-Piezo pickup blender,Low battery check LED, Phantom power LED, Phase reverse switch for Anti feedback and Master volume.It is powered by 9 V battery or 48 V phantom power. Microphone controller is composed with two features - Level controller & Sharpness controller for the fine control. ARTEC provides the finest condenser microphone that attached to the EQ body by 4 pins connector. BASS controls to adjust the amount of gain at 80 Hz, MIDDLE controls to adjust the amount of gain at 800 Hz, TREBLE controls of gain at 3 kHz, PRESENCE controls of gain at 15 kHz and all controls can be boosted or cut the amount of 12 dB. Color:BlackTo enable the Phantom Power feature, a circut board which is mounted , includes a standard 1/4" input jack and XLR jack. This provides for easy installation on the lower bout of your guitar.. This also gives you the option of using a XLR or 1/4" input jack.-Including:1pcs of Condenser Mic 1pcs of Balanced XLR jack.1pcs of piezo pickup artec PP607(Length:70mm,Width:2.5mm)Note:Battery is not inclued because forwarder do not ship battery.