Tips: The main power supply must be connected to A70, only connected to the trigger input is unable to work Approximate 3DB channel imbalance may exist at 7-8 clock at very low volume position,make sure you accept this before ordering Product sellpoints 【With PFFB design】The AIYIMA A70 is the first stereo home audio Class D amplifier on the market based on the TI TPA3255 chip with a post-filter feedback loop (PFFB),The A70 Class D amplifier with PFFB implementation,it have no load dependency together with lower distortion 【With 12V Trigger Input & RCA audio input】The trigger input to allow one button power up of the audio chain from the source,Simple and convenient; There is a switch to add 3 dB of gain to RCA input. This gain switch can be used to boost the signal input at RCA inputs； 【With balanced input】the AIYIMA A70 Stereo Amplifier with XLR audio signal input ,This design minimizes interference and reduces noise floor 【With RCA & Sub output】Add the sub output with variable filter output,The sub output is controlled by the volume setting,and Added adjustable cutoff frequency (20-150hz/20-600hz) for low-pass filter output,Easily build 2.1-channel Audio systems to match any of your desktop speakers Product parameter: Chipset: TPA3255+NE5532 Replaceable op-amp chips: RT3609SM, OPA2604, OPA2134, LM4562, JRC5532, OP275GSZ, OPA1612 ect. Distortion: 0.0015% (@ 1W) Signal-to-noise ratio: ≥ 116 dB Frequency Response: 20Hz-20KHz (±1dB) RCA input sensitivity: 1.9Vrms (25 dB)/1.1Vrms (28.5 dB) XLR Input Sensitivity:3.8Vrms (19dB) Speaker Impedance: 4-8Ω Stereo Output Power: 2x300W (@4Ω) 48V10A Input Mode: RCA+XLR Supported devices: decoder, bile preamp, computer, CD, cell phone, MP3, etc. Output mode: 2.0 passive speaker + Active subwoofer Working power supply: 36-48V Product size: 81*146*90mm Packing size: 210*185*115mm Product net weight: 940g Packing（with Product）weight:1170g 48V 10APower Link： https://zanbbel.com/img/XzyIX_KR1pzSGitHwF28dG22ZLOVQWIjrwy3Vg3ZqRXD3dXoWdi-n88PZUNxiq4mFM6Mop9teCzmrRMENGXcXsK8lPCx8ugNohARgdCr10zl.jpg?w=800 Package included: 1Pcs A70 TPA3255 Power Amplifier Warranty：24 Months

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