The CP-67 preamp and DI for acoustic guitars.
To avoid overloading the Acoustic Guitar EQ use the INPUT knob of this DI  to reduce the volume.
Turn on the ANTI FEEDBACK Footswitch and adjust the ANTI FEEDBACK Knob to avoid volume feedback.
3. Turn on TREBLE BOOST Footswitch, to increase the brightness of the tone.

Features:
1. True Bypass design, with aluminum alloy casing
2. Power Requirement: 9V DC center negative
3. Current consumption: 30mA
4. Product Dimensions: 11.9×9.4×3.8cm
5. Weight:0.42kg