TU04 BT Sound Mixing Console Record 48V Phantom Power Monitor AUX Paths Plus Effects 4 Channels Audio Mixer with USB1. All you need is a cellphone data cable to connect to your computer and tune it up when its powered. 2. AUX bus main channel output. 3. One AUX output and backtrack. 4. 2 band EQ for each input channel. Built in professional reverb. 2 bus electronic balanced display. 5. Power: 50W 6. Item size: 185 * 150 * 55mm 7. 3 * 5. 9 * 2. 2in 7. Package size: 230 * 220 * 70mm 9. 1 * 8. 7 * 2. 4in 8. Package weight: 610g 1. 3lb 9. Package list: 1x Sound Mixing