Fangrui Product Details 1. : 2. 10-channel Amplifier: With 10 Stereo High-power Amplifier Sections. Each Output Has Individual Volume Knobs That Can Individually Control Different Headphones Or Speakers. Portable Durable Metal Case,black Appearance,metal Texture. 3. Equipped With 12v Power Adapter: It Has Protection Functions Such As Overheating Protection/overvoltage Protection,so There Is No Need To Worry About Potential Safety Hazards When Using The Headphone Amplifier. You With A Sound Experience. 4. Sound Quality: The Driver Chip Adopts High-quality Njm4556a,which Has Voice Performance,and Can The Sound Quality Even When Used At The Same Time. 5. Compatibility: 10-channel Stereo Headphone Amplifier,each Channel Has Output Level Control,compatible With 3.5mm And 6.35mm Headphones (requires 3.5mm To 6.35mm Adapter). 6. Applicable Scenarios: Widely Used In Studios,,recording Studios,conference Recordings,etc. During Recording,up To 10 People Can Listen To The Main Mix In The Recording Studio. 7. Specification: 8. Input Type: In (voice In) 9. Output Type: Out (voice Out) 10. Built-in Battery: No 11. Type: Home Amplifier 12. Model Number: Headphone Amplifier 13. Driver Chip: Njm4556a 14. Quiescent Current: 85ma 15. Gain: 12db 16. Output Impedance: 16-600 Ohms 17. Input Impedance: 10k 18. Input And Output : 3.5mm 19. Working Power: Dc12-24v 20. Size: 23 X 5 X 3cm/9.06 X 1.97 X 1.18in 21. Plug Type: Eu Plug 22. Voltage: Dc12v 23. Material: Metal 24. Colour: Black 25. Package Contents: 26. 1 X Headphone Amplifier 27. 1 X Audio Cable(note: Random Color,not Accept The Specified Color.) 28. 1 Adapter 29. Only The Above Package Content,other Are Not Included. 30. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.