A80 TPA3255 Bluetooth DAC Amplifier, PFFB and Digital VU Meter ESS9038Q2M 2.1 Class D HiFi Stereo Amp for Home Theater,TRS Input,Sub Output,12V Trigger,Tone and Remote Control

All-in-One DAC Amplifier: A80 stereo decoding amplifier uses DAC chips - ESS9038Q2M and TPA3255D2 chips, with RUBYCON capacitors, German WIMA capacitors and professional audiophile grade components. It produces a power of up to 300W at 4Ω, which brings powerful dynamics and makes the sound quality more pure. High Performance: A80 amplifier TRS/RCA signal-to-noise ratio is up to 109dB, total harmonic distortion (THD) as low as 0.006%, to ensure high-quality conversion of audio signals. PC-USB input supports PCM transmission :384kHz/32bit and DSD256 playback, suitable for users looking for ultimate sound quality. Rich input and output: This amplifier supports RCA, TRS, PC-usb, optical, coaxial, Bluetooth, and 12V trigger input modes. Note: The 12V trigger must be connected to a preamplifier and must be supplied with a 12V trigger output. The AUX input can be connected to a passive subwoofer or the following amplifier. Provide users with a variety of connection options, easy to integrate with a variety of audio sources and playback devices to adapt to different usage scenarios. Outstanding Bluetooth Connection: Using QCC3040 wireless Bluetooth 5.1 chip, supports AAC, SBC, aptX, aptX-LL, APTX-HD, 24bit 44.1KHz to achieve lossless transmission, you can easily use your smartphone or tablet PC to transfer your favorite songs lossless. Equipped with remote control, easy to operate, can be combined into powerful hi-fi home audio system. Excellent Design: The A80 amplifier is full of technology, a combination of mode and retro, with electronic UV display design, spectrum analyzer display and 3 different display options, you can change the mode you want. It can clearly display the input status and volume and other information in real time, especially in scenes such as playing games, parties, etc., and enjoy classic songs, showing very good dynamic image effects. PFFB circuit design: A80 uses PFFB (post-filter feedback) technology to effectively overcome the common load dependency problem of class D amplifiers, improve distortion, improve frequency response, and thus greatly improve sound quality and performance. Compatible with a Wide Range of Op Amp Chips: If you want to customize your audio experience with the A80 OP rolling function, you can try to use a compatible eight-pin dual op amp chip, such as: RT3609SM, OPA2604, OPA2134, LM4562, JRC5532, OP275GSZ, OPA2134, LM4562, 1612 and so on. Note: This is to replace the op amp chip of the second board underneath.