Check the listing for details. Fosi Audio BT20A Pro Audio Amplifier Bluetooth Home Stereo HiFi Class D 48V/32V. Condition: New. Listed at 79.99 USD. Store CategoriesStore CategoriesMono Amplifiersubwoofer amplifierOtherFosi Audio BT20A Pro 300W x2 TPA3255 Bluetooth 5.0 Home Audio Stereo 2 Channel Amplifier Receiver Mini Hi-Fi Class D Upgraded Integrated Amp for Speakers with Bass Treble Control Product Description Features： 300 Watts x2 Power Output: Provided by the TI TPA3255 chip which features an advanced feedback design and proprietary high-speed gate driver error correction. In addition to excellent audio performance, TPA3255 achieves both high power efficiency and very low power stage idle losses below 2.5W. High Efficiency: A significant upgrade from the BT20A amplifier. There're two plug-ins NE5532 Op-Amps can be replaced by MUSES02/OPA26041P/OPA2134PA Op-Amps etc. To create a different sound quality. SNR≥108dB; THD≤0.005%. Upgraded Bluetooth 5.0 connectivity: By pressing and holding the volume control for five seconds, the Bluetooth pair can be cleared. In addition, it has a Bluetooth memory function, so it can be easily paired the next time. It also receives an alert tone. Sound Control: With its unique design, the BT20A Pro amplifier for home audio has a wide range of bass and treble controls. Alternatively, you can turn the treble and bass effects to a middle point to listen to the original sound without effects. Specifications： Model：BT20A PRO Output Power：300Wx2 @4Ω Terminating Impedance：2-8Ω Input Mode：Bluetooth + RCA Output Mode：Passive Speakers + Pre-out Frequency Range：20Hz-20kHz(±1.2dB) THD ≤0.005% SNR ≥108dB Chip Set：TPA3255 Bluetooth Transmission Distance：Up to 50Ft Bluetooth Transmission Format：SBC/AAC Device Dimension：5x5x1 inches DC Input Range：24-48V Power Supply：32V 5A What‘s in the box？ BT20A Pro Power Amplifier x 1 Bluetooth Antenna x 1 32V/48V 5A Power Adapter x 1 AC Cord x 1 User’s Manual x 1 Copyright © 2023 Dianxiaomi