About The ProductNowadays, many hard disk recorders and computer audio interfaces dona??t have condenser microphone amplifier and microphone power supply, so that the condenser microphone cannot be used directly upon insertion. To address this problem, we provide you with LINEPAUDIO Two-channel Condenser microphone Amplifier. LINEPAUDIO A961 provides two high-quality microphone PreAmps, XLR balanced input, with gain control and 48V phantom power supply, so that any device only with line input port can readily use after connected to the condenser microphone. In addition, A961 also provides 2X 6.35mm high-impedance input ports, you can record by directly inserting the electric guitar, bass or other instrumentFeatures1. 2x balanced XLR microphone input port, with independent 60dB gain switch knob and 48V phantom power switch. 2. 2x high-impedance TS input port, with independent 40dB gain switch knob. 3. 2x TRS balanced /non-balanced output port. 4. The lowest SNR in similar products, 48V phantom power supply, ultra-compact architecture 5. Frequency response range: 5hz - 50khz, +0, -3dB 6. MIC gain: Up to 60dB 7. MIC input impedance: 1K Ohm 8. Line input gain: Up to 40dB 9. Line input impedance: 100K OhmsSpecification: General Model A961 Material Metal Frequency 5Hz-50kHz Input Impedance 100K Ohms Line, 1K ohms Mic Size 140 mm x 83mm x 42 mm Weight 625g Package Include Package Contents 1 x Amplifier 1 x AC Power Adapter Charger Package Weight One Package Weight 0.90kgs / 1.97lb One Package Size 20cm * 18cm * 5.5cm / 7.87inch * 7.09inch * 2.17inch Qty per Carton 20 Carton Weight 15.93kgs / 35.12lb Carton Size 42cm * 38cm * 30cm / 16.54inch * 14.96inch * 11.81inch Loading Container 20GP: 556 cartons * 20 pcs = 11120 pcs40HQ: 1292 cartons * 20 pcs = 25840 pcs