AIYIMA A07 Pro TPA3255 Stereo Amplifier Bluetooth 5.2 300Wx2 HiFi Class D Amp 2.0/2.1 Channel Audio Power Amp for Speaker with Bass Treble Control& Line Output + Power Adapter (A07 PRO)chipset: TPA3255+NE5532+Qcc304X Bluetooth: Version 52 Bluetooth support: 16-24bit 441-48khz Supported format: sbcaacaptxaptx-llaptx-hd Replaceable OP amp chips: SRT3..

AIYIMA A3001 Mini Stereo Amp 200W Subwoofer Amplifier Class D Mono Amp with Full-Frequency & Sub Bass Home Audio Speaker ampSubwoofer Amplifier Full-Frequency Mono Amp Mini Stereo Audio Amp with SUB Frequency control Power Adapter: 36V6A Dc Input Range: 24V-35V Terminating Impedance: 4 - 8 Ohm RMS Power Output: RMS 200 watts @ 2-ohm,RMS 150watt @ 4..