Enhanced Audio Control: Experience superior sound control with the XR-A901 Tone Board Preamp, featuring dedicated adjustments for treble, bass, and volume to fine-tune your audio output. Versatile Compatibility: Designed to integrate seamlessly with various amplifier boards, enhancing both home and professional audio systems. High-Quality Components: Built with top-grade materials for reliability and enduring performance, ensuring crisp and clear sound reproduction.<br><br>Product name: Preamplifier mixer Product model: XR-A901 Power supply voltage: DC12V-24V DC Number of channels: Dual channels Due to different batches, there may be differences in product appearance and printed text, which not affect use Colour:Blue Material:PCB<br><br>Package Contents: 1 x Preamplifier mixer 2 x cable<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.