<b>Product description:</b><br> All parts and components of this product are original products, unpretentious and pure in quality; the use of high-quality original parts not only guarantees safety and quality, but also has a long service life, and more importantly, it is a strong guarantee that the actual performance can reach the design goals. The pursuit of quality is our consistent aim<br> <b>Basic Parameters:</b><br> Chip: tpa3221+QCC3034+NE5532<br> Bluetooth chip: QCC3034 Bluetooth 5.0 Support: APTX-HD/APTX/ACC/SBC<br> Replaceable op amp chip: OPA2604, OPA2314, LM4562, JRC5532, etc.<br> Signal to noise ratio: ≥108db<br> Input sensitivity: 0.775V<br> Frequency response: 20-20Khz (±3db)<br> Total harmonic distortion: 0.02% (1kHz 1w)<br> Speaker impedance: 4-8Ω<br> Output power: 105W*2 (4Ω load)<br> Input mode: RCA, /Bluetooth<br> Support equipment: mobile phones, tablets, computers, MP3, TV, etc.<br> Output mode: passive speaker<br> Working power supply: DC24-32V<br> Size: 133*91*43mm<br> Product net weight: 350g<br> <b>Package included:</b><br> 1*amplifier board<br> 1*Bluetooth antenna<br> 1*Power adapter(option)<br> 1*Manual<br>