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Best Choice Fosi Audio 
Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Spea Immersive Audio Experience - Enjoy rich, detailed dynamics with the Fosi Audio V3 power amplifier, which delivers crystaBest Value Fosi Audio 
Fosi Audio BT10A Bluetooth 5.0 Amplifier Stereo Power Amplifier, 2 Channel Class D Mini Hi-Fi Integrated TPA3116 Audio A 【Bluetooth 5.0】Featuring an integrated Bluetooth ATS2853 chip, this bluetooth amplifier supports streaming up to 50ft (1AIYIMA 
AIYIMA A07 MAX 2 Channel Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Speaker Amp Bridgeable Mono Superior Audio Quality：AIYIMA A07 MAX Mini Hifi amplifier uses TI TPA3255 high-performance, low-distortion Class D ampliRomicta 
Romicta Stereo Audio Amplifier, 600W Home 2 Channel Wireless Bluetooth 5.0 Power Amplifier System, Home Amplifiers FM Ra 【600W POWER】AK45 Digital Audio Amplifier Fully upgraded design, 600W peak power and 40W+40W rated power, perfectly suitaFosi Audio 
Fosi Audio ZA3 Balanced Stereo/Mono Amplifier HiFi with TPA3255 Chips, Mini Audio Amp Monoblock with XLR RCA Inputs and Dual-Mode Innovation: This new generation mini amplifier offers both stereo and mono modes, adapts flexibly to your diveFosi Audio 
Fosi Audio BT20A Pro Bluetooth Amplifier HiFi, 300W x2 Mini Stereo Amplifier with TPA3255 Chips, Replaceable Op-Amps, Ba Unparalleled Audio Precision: With advanced TI TPA3255 amp chip, the BT20A Pro delivers an astonishing 2x300 Watts of poFosi Audio 
Fosi Audio V3 Mono Power Amplifier for Home Audio Speakers, Mini Monoblock Class D Amp with TPA3255, 240W for HiFi Home Mini Monoblock Amplifier: Crafted for HiFi audiophiles, the V3 Mono allows you to drive a single passive speaker with onXICEN AK55 Stereo Audio Amplifier, 600W Home 2 Channel Wireless Bluetooth 5.0 Power Amplifier System, Home Amplifiers FM Radio 【𝗖𝗼𝗺𝗽𝗮𝗰𝘁 𝗯𝘂𝘁 𝗣𝗼𝘄𝗲𝗿𝗳𝘂𝗹】-- This home audio receiver & amplifier is compact but packs a lot of punch! It41% Off Dpofirs AK-160BT Bluetooth 5.0 Power Amplifier, 12V 20Hz to 20KHz 2 Channel Stereo Digital Audio Amplifier, Aluminium Alloy Clea Bluetooth Connection: With Bluetooth compatibility, this amplifier can easily connect to a wide range of devices, such aFosi Audio Fosi Audio V3 Mono Power Amplifier for Home Audio Speakers, Mini Monoblock Class D Amp with TPA3255, 240W for HiFi Home Mini Monoblock Amplifier: Crafted for HiFi audiophiles, the V3 Mono allows you to drive a single passive speaker with onDonner 4 Channel Audio Amplifier, Donner Bluetooth 5.0 Audio Power Amplifier, 440W HiFi Amplifier with USB, SD, FM, Echo 2 Inpu 【440W Peak Power & 4 Channels】Donner Bluetooth stereo audio amplifier has 4 channels independently controlled. It offersAOSHIDA SMSL AO300 PRO Power Amplifier, CS43131 165W DAC Amp, USB/Coax/Opt/HDMI eARC/RCA to 2.1 Channel Speaker/Subwoofer, 4.4mm Hi-Res Audio Support: The SMSL AO300PRO features the CS43131 DAC chip and XMOS XU-316 interface, supporting PCM 32bit/76Fosi Audio Fosi Audio HT4S Bluetooth Amplifier for Outdoor Speakers, 4 Channel Power Amp for Bass Shaker Sim Racing Cockpit, 4.1/5. All-in-One Amp: A mini amplifier that integrates DAC and power amplification. This stereo amplifier supports up to 5 chaLOXJIE LOXJIE A40 165W*2 Digital Power Power Amplifier Headphone Amplifier decoding DSD256,BT 5.1,Optical I2S HDMI ARC PHONO In 165W*2 Digital Power Amplifier &Headphone Amplifier,supports MQA decoding&MQA-CD ;New third generation XMOS XU-316, PCM15% Off AOSHIDA SMSL PA40 Class D Power Amplifier, 165Wx2 Stereo Amplifier for Passive Speakers, with MA5332 Chip/EQ/Bass Treble Control Up to 165Wx2 Output Power: PA40 audio amplifier use MA5332 chip, supports 165Wx2 (4Ω) and 85Wx2 (8Ω)AOSHIDA SMSL PA40 Class D Power Amplifier, 165Wx2 Stereo Amplifier for Passive Speakers, with MA5332 Chip/EQ/Bass Treble Control Up to 165Wx2 Output Power: PA40 audio amplifier use MA5332 chip, supports 165Wx2 (4Ω) and 85Wx2 (8Ω)Power Dynamics PD PV220BT Compact 2-Channel Audio Power Amp, Speaker Amp with High-Fidelity Sound, Mini Amplifier for Home Surround Sys Bluetooth Connectivity: Effortlessly stream your favorite music with this Bluetooth stereo amplifier, offering a seamlesXICEN AK45 Stereo Audio Amplifier, 300W Home 2 Channel Wireless Bluetooth 5.0 Power Amplifier System, Home Amplifiers FM Radio 【𝗖𝗼𝗺𝗽𝗮𝗰𝘁 𝗯𝘂𝘁 𝗣𝗼𝘄𝗲𝗿𝗳𝘂𝗹】-- This home audio receiver & amplifier is compact but packs a lot of punch! ItNobsound NS-10G Bluetooth 5.0 2 Channel Power Amplifier HiFi Stereo Audio Mini Amp Wireless Receiver 50Wx2 for Home Speaker with NS-10G is the upgrade version of our popular NS-01G. It is a 100W Bluetooth power amplifier for 3~8 inch 2.0CH home speaVonyx Vonyx VDA500 PA Amplifier - High-Power Class D Stereo Amplifier, Audio Amplifier for Professional Sound Systems, Efficie Class D Efficiency: The VDA500 employs advanced Class D technology for a high-efficiency amplifier that delivers powerfuAIYIMA AIYIMA A07 Premium TPA3255 Power Amplifier 300Wx2 HiFi Class D Stereo Digital Audio Amp 2.0 Channel Amplifier for Passiv ❶ This AIYIMA A07 small Hifi stereo amplifier adopts Texas Instruments TPA3255 high-performance low-distortion high-poweFosi Audio Fosi Audio M04 Subwoofer Amplifier for Home Theater Mono Channel Digital Class D Integrated Power Amp for Passive Speake Fosi Audio M04 is a subwoofer amplifier mono amp driving passive subwoofer or passive speakers. M04 adopts Texas InstrumWild Power 1200W Stereo Audio Amplifier, Bluetooth 5.0 Power Amplifier, 2 Channel Stereo Audio Receiver with 5-Band EQ Mixer, USB/S Powerful Audio Performance: The AV-660BT amplifier delivers a rated power of 1200W and a peak power of 2000W, supportingFosi Audio Fosi Audio BT30D Pro Mini Bluetooth Amplifier HiFi, 2.1 Channel Subwoofer Amp, with TPA3255 Chips 165W x2+350W and bass 2.1 CH Amplifier: The BT30D PRO integrated amp has two sets of passive speaker outputs and one set of passive subwoofer30% Off Yamaha Yamaha A-S501 2-Channel Integrated, 85 W Stereo Amplifier, Black ToP-ART (Total Purity Audio Reproduction Technology) and high quality parts; I/O (input to output) Direct Symmetrical DeDonner Donner Stereo Receivers Home Audio Amplifier, Premium 1000W Max Power 4 Channel Amplifier with Bluetooth 5.0, USB, FM, 2 1000 Watt MAX POWER: Donner stereo receiver provides a 1000W max power and simplified appearance to level up your audioSpicurity ZK-1001B DC 7-24V 100W Mono Audio Power Amplifier ZK-1001B DC 7-24V 100W Mono Audio Power Amplifier18% Off Nobsound Nobsound G2 PRO TPA3255 Hi-Fi 300W Subwoofer Power Amplifier Mono Channel Class D SUB Audio Amp With PBTL/SUB switch: convenient to use G2 PRO as full frequency amp or subwoofer amp, a SUB output is specially designeDouk Audio Nobsound Mini Bluetooth Power Amplifier, 5.0 Stereo Hi-Fi Digital Amp 2.0 Channel 50W×2 with AUX/USB/Bluetooth Input, Wi This is Nobsound's new power amplifier. Based on our previous product, we enhance its output power and improve its functFosi Audio Fosi Audio MC351 2.1 Channel Integrated Amplifier with DAC, Home Audio Stereo Power Amp with Dual TPA3255 Chips for HiFi All-in-One DAC Amplifier: The MC351 integrated amp features high-resolution decoding capabilities, supporting Bluetooth,VGOL VGOL TDA7294 100W Audio Power Amplifier Compatible with Hi-Fi Field Applications Home Stereo Self Powered Loudspeakers Replacing OEM number:TDA7294, which is a direct replacement for the old or broken one.Denash Power Amplifier, Bluetooth 5.0 Stereo Audio, 2 Channel Amplifier Receiver 20W x 2, DC 12V Mini Home Power Amplifier Univ Speaker Compatibility: The amplifier supports a range of different speaker sizes, from 4‑16ohms, making it adaptable forAONELAS 200W Bluetooth 5.0 Power Amplifier 2 Channel Hi-Fi Stereo Audio Amp Home Desktop Car Speaker DC8-24V With Bluetooth 5.0 and 3.5mm AUX audio input, achieving more stable and faster transmission. Compatible with most commonS.M.S.L SMSL A300 HiFi Power Amplifier, Class D Integrated Amp SDB Sound Effects Hi-Res Audio Receiver, RCA, Bluetooth 5.0, USB Germany's Infineon's new digiral high-power amplifier chip. Japan's NJRC company electronic volume control chip NJW1194.Fosi Audio Fosi Audio ZP3 Balanced Preamp for Home Audio, 2 RCA and 1 XLR Inputs, RCA/XLR Outputs and Sub-Out, Pre Amp for 2 Channe Home Audio Control Hub: Features 3-in-3-out options for connecting up to three audio sources. Includes a remote controlGeneric Generic Mini 20W 2 Channel HiFi Stereo Bass Power Amplifier Digital Amp for Car, Home, with & 3.5mm Input Support Mobile All aluminium alloy shell, to eliminate all kinds of electromagnetic interference.Aribrnten Aribrnten Power Amplifier Fm Radio Mini Amplifier 400W HiFi Mini HiFi Audio Power Amplifier Audio Amplifier Ak170 Audio Low distortion supplies a clearer, stronger and more powerful sound.Douk Audio Nobsound NS-20G 200W Mini Bluetooth 5.0 Power Amplifier 2.0 Channel Wireless Receiver Hi-Fi DSP Stereo Headphone Audio A Mini Elegant Size But Powerful: ① NS-20G mini compact size suits very well for home and desktop use, and the output poweTbest Amplifier Car Audio, 2/4 Ohm Stable Class AB Car Power Amplifier for Car Sound Systems Matte Black [Powerful Performance] 4 Channels of 50w rated power and 4 channels of 60w maximum power deliver immersive listening expEVGATSAUTO EVGATSAUTO Mini Audio Amplifier, Compact Stereo Amp Small Power Amplifier RMS 2 Channel HiFi Receiver with USB MIC for H 【Versatile Compatibility】: The amplifier supports a variety of speaker sizes from 4 to 16 ohms, making it suitable for aEulbevoli Bluetooth 5.0 Power Amplifier Clear Sound Quality, Aluminium Alloy 20Hz to 20KHz 12V Universal, Mini Stereo Amplifier fo High Power Output: The stereo power amplifier delivers great amplification, with a maximum power output of 20W x 2, makiYUEHISY Bluetooth 5.0 Stereo Power Amplifier, Clear Sound Quality Power Amplifier with Control Panel, Independent Tone Control, HIGH POWER OUTPUT: The power amplifier delivers great amplification, with a maximum power output of 20W x 2, making it i01 Audio Amplifier Module, Digital Power Amplifier Module, High-Quality 5V Digital Power PAM8403, 2Pcs Small Digital Power Strong and to use, ensures a long service life.Altronics Kingray PSK06 14V DC 150mA Plug Pack Injector with PAL Connections 14VDC 150mA Power Supply With PAL Type OutputAOSHIDA Topping B100 Mono Pure Power Amplifier, 100 watt amp, RCA/XLR/TRS to Passive Speakers Amplifier with 3 Gain Control/12V Excellent Audio Performance: TOPPING B100 mono amplifier provides up to 151dB signal-to-noise ratio and extremely low diGeneric Subwoofer Amplifier, Dual Channel Subwoofer Amp Power Amplifier Digital TPA3116D2 Power Amp Board for Home Theater HiFi 【Compact Design】The Subwoofer Amplifier features a sleek and compact design, allowing it to seamlessly blend into your sBewinner Bewinner Bluetooth Amplifier Board 2x50W+100W Digital Power Amplifier for Speakers 15-100W 4-8Ω DC 12-24V INPUT AND OUTPUT: The power amplifier board supports AUX + BT sound source input and supports subwoofer + left and rightRoutledge Audio Power Amplifier Design Audio Power Amplifier DesignBehringer Behringer Europower EPQ304 Power Amplifier Accelerated Transient Response technologyYIFAN YIFAN Zigbee 3.0 Range Extender with Built-in Power Amplifier, Tuya Zigbee Signal Amplifier, Long Range up to 7600 sq.ft Extend your Zigbee network range: With the Zigbee repeater, you can not only extend your wireless network to every corneSpacnana 5pcs PAM8403 Digital Audio Amplifier Board 3W+3W Class D Power Amp Module 5V Mini Amplifier for LCD TVs Monitors Laptops [Powerful Performance] High efficiency of 90%, delivering 3w (left channel)+3w (right channel) with 5v power supply, ideYIFAN YIFAN Zigbee 3.0 Range Extender with Built-in Power Amplifier, Tuya Zigbee Signal Amplifier, Long Range up to 7600 sq.ft Extend your Zigbee network range: With the Zigbee repeater, you can not only extend your wireless network to every corneCerlyiont 30W Handheld Power Amplifier 15W 30W Adjustable Output Power Half-Duplex Operation Low Reception Loss for Communication [INCREASED TRANSMISSION POWER] Increases power from 0.1-3W input to 30W output for enhanced communication capabilities wzolyet zolyet 4-Channel Car o Amplifier 5800W High-Power Amp 12.0V Ultra-Thin Four-Way Power Amplifier Class A/B Black 5800W high-power car amplifier can effectively imp the sound quali of car o and bring a nice experience to users.ASHATA TPA3116 Power Amplifier Board, 5.1 Channel Class D, 4x50W Surround, 2x100W Sound System, Digital Amplifier, High Sensiti HIGH SENSITIVITY INPUT: TPA3116 power amplifier board adopts high sensitivity input, which can be directly connected toGeneric 4-Channel Car o Amplifier 5800W High-Power Amp 12.0V Ultra-Thin Four-Way Power Amplifier Class A/B 5800W high-power car amplifier can effectively imp the sound quali of car o and bring a nice experience to users.BaotyJie BaotyJie Mini Audio Power Amplifier Audio Amp, Mini Subwoofer Amplifier, for Car Audio System Car Speakers Phone 【2.1 Channel System】: Mini Audio Power Amplifier is equipped with a 2.1 channel system, 12V power supply, and output powEMSea EMSea 5PCS PAM8403 Super Mini Digital Amplifier Boards 2 X 3W Class D Dual Channel 2.5V-5V Power Amplifier Board Efficie This module is a 3W, class-D stereo audio amplifier. It offers low THD+N, allowing it to achieve good quality sound reprReland Sun Rectifier Filter Power Supply Board / 8A Rectifier Power Amplifier / 8A Rectifier with red LED Indicator/AC Single Power Reland SunRoutledge Designing Audio Power Amplifiers Designing Audio Power AmplifiersFloolinct 30W Handheld Power Amplifier Adjustable Output Power Stable Performance for Communication Devices [ENHANCED POWER & FREQUENCY]: Boosts transmission power from 0.1-3W to 30W, expanding communication ability in the 400MHHaofy Haofy RF2126 RF Power Amplifier Mini-Size 1500-2600 MHz 2.4 G 1W Amplifier with Heat Sink for Positioning/mid-Power Rein [Compact and yet powerful] Mini design with high performance, ideal for limited rooms.Comimark Comimark 2 Pcs Mp3 Lossless Decoders Decoding Power Amplifier Mp3 Player Audio Module Mp3 Decoder Board Support TF Card Support MP3 format, playing power on automatically, LED indocator light when module is working.Changor Changor 5pcs LM386 Amplifier Module, 200 Times Gain Audio Power Board with Adjustable Volume and Power Indicator, lm386 [Versatile Audio Enhancement] - Designed for portable speaker setups, DIY electronics projects, and home theater systemsZGUZMCMK ZGUZMCMK Mini Audio Power Amplifier Mini Subwoofer Amplifier Audio Amp for Car Audio System 【Easy Installation】: Audio Amplifier is easy to install. Whether it is fixed installation or temporary placement, it canSenzooe 3pcs XH-M562 TPA3116D2 Digital Audio Amplifier Board Class D Power Amplifier Board Dual 50W (TDA3116D2) 3pcs XH-M562 TPA3116D2 Digital Audio Amplifier Board Class D Power Amplifier Board Dual 50WGeneric Generic Mini Audio Power Amplifier, Audio Amplifier, Stable, Strong Bass Reinforcement Function, Mini-subwoofer Amplifie 【Wide Range of Application】: Subwoofer Amplifier supports multiple audio source input, supports phones, computers, TVs,Bingfu Bingfu Universal Car Stereo Amplified FM Radio Hidden Antenna & Signal Booster Amplifier Amp 12V Power Supply DIN Plug f Car Stereo Antenna Amplifier: Universal Car Stereo FM Radio Antenna Signal Booster Amplifier Amp, 12V Power Supply DIN PFocal Press Class-D Audio Power Amplifier Design Kingray Kingray PSK06F 14V DC 150mA Plug Pack Injector with F-Type Female Connections Output Voltage: 14V DC 150mAKingray Kingray PSK06F 14V DC 150mA Plug Pack Injector with F-Type Female Connections Output Voltage: 14V DC 150mACHICIRIS CHICIRIS High Power Audio Amplifier Board Module, TDA7498E 160W+160W Stereo Power Amplifier, Ideal for Car Home Use, Mod [HIGH OUTPUT POWER DIGITAL AMPLIFIER] - Experience powerful and clear sound with this high power dual channel audio sterCHICIRIS CHICIRIS High Power Audio Amplifier Board Module, TDA7498E 160W+160W Stereo Power Amplifier, Ideal for Car Home Use, Mod [HIGH OUTPUT POWER DIGITAL AMPLIFIER] - Experience powerful and clear sound with this high power dual channel audio sterJDFHFGB 4 Gauge Amplifier Wiring Kit, Complete Car Audio Installation System with Power Cable, RCA, Fuse Holder & Terminals for Complete 4 Gauge Wiring System: Features all essential components for a professional car audio installation, including pMarantz 2CH 100W Integrated Amplifier A masterpiece of audio architectureMarhynchus Marhynchus DC-5G RF Power Splitter 6dB High Gain Low Noise LNA Amplifier Power Divider 1 to 2 Way ✎【INSTRUSTION FOR USE】: This microwave power divider uses a professional microwave power splitter, 1 input to 2 outputs.Create idea Create idea 20pcs 2SB772 2SD882 Transistor Switching Amplifier TO-92 Low Power Electronic DIY Project Microwave Communic Model: 2SB772 2SD882; Length: 24mm; Voltage: 100V;AIMALL AIMALL High to Low Frequency Car Audio Converter, TD-22 Speaker Wire to RCA Output for Amplifier, Clear Sound Conversion 🔊 Enhanced Audio Clarity: The TD-22 ensures clear sound reproduction by effectively reducing signal interference, makinCryfokt Cryfokt 2 Channel Car Stereo Subwoofer Audio Converter for Enhanced Sound Quality with Power Amplifier Control Wire, Eas [ AUDIO CONVERSION] Convert high audio signals to low frequency for improved sound quality and reduced signal weakness.XUMIUZIY XUMIUZIY Power Amplifier Module,Precise Cut and Interface,HW-433 Dual 5W Digital Double Channels Stereo Power Amplifier The product adopts materials, effectively avoiding corrosion and wear, durable to use.Marhynchus Marhynchus Digital Amplifier Board, Digital Power Amplifier Board Channel Volume Adjustment Fine Workmanship Power, [ Channel] XH-A157 channel digital power amplifier board, with an input voltage of DC5V and stable output, is very practViaGasaFamido ViaGasaFamido NRF24L01 + Power Amplifier + LNA Radio Module Electrical Accessories for 1100 Meters [Highly efficient transmission]: The radio module is a high-performance, highly sensitive radio data transmission moduleHyuduo Dual Channel Digital Amplifier Volume Control Board for Home Theater Audio Speaker Systems, Featuring Bass and Treble Co [Good Practicability] This amplifier volume control board can adjust volume, treble, bass and volume balance ,the soundConext Link Conext Link 25 ft Red 4 Gauge Amplifier Power Ground Wire 25 Feet 4 GA AWG Amp Cable Roll Stranded CCA ( Copper Clad Aluminium ) Conductor with PVC JacketAcademic Press Doherty Power Amplifiers: From Fundamentals to Advanced Design Methods DOITOOL DOITOOL Dual Channel Audio Stereo Amplifier Board Kit with Plastic Construction DIY Power Amplifier Module for Car and H Power amplification board:achieve sound clarity and precision through the use of a dual-channel design,amplifier boardJiawu Jiawu Power Amplifier, Amplifier Board 12V-26V Reduce Distortion Stable for Home for Electronic Equipment Amplifier Board - Adopts TDA3116D2 MONO chip, ensures sound.LABRIMP LABRIMP 30w Wireless Subwoofer Amplifier Board Digital Audio Amplifier Power for Wireless amplifier--with connection, this amplifier board is easy to use and can be quickly paired with your devices forPyhodi Pyhodi Power Amplifier Module, 5.0 Digital Power Amplifier Board Stereo Adjustable Volume with for DIY Speakers WITH AND ADJUSTABLE VOLUME: Power amplifier module can adjust the volume, with a , easy to control the volume, ideal forArtec House RF Power Amplifiers for Wireless Communications, Second Edition (Artech House Microwave Library (Hardcover)) VGOL VGOL 20pcs KSC945 PNP Transistor Switching Amplifier Low Power Transistor Electronic DIY Project Microwave Communication Model: KSC945 ; Voltage: 100V;IJPDXOLBQ IJPDXOLBQ Power Amplifier 12V, 19V DC, 10-18V to 19V, Power Regulator for Laptop and Car (12V to 19V 10A) Signal ConvertersVroomoto Vroomoto Digital Amplifier Module Dual Channel Power Amplifier Board with Cable, TPA3116D2 Class D, 120W x 2 Output Powe [High Efficiency Digital Amplifier Chip] Utilizes tpa3116d2 class d operation with over 90% power efficiency and low idlZEZEFUFU 600W Digital Power Amplifier Board High Power Stereo Bridged Mono AMP Superior Sound Quality: Utilizes oxygen-free copper wire to significantly enhance sound quality, delivering a pure and dYsyaxsyt Ysyaxsyt Power Amplifier Board High-Sensitivity Mono TPA3116 Subwoofer Amplifier Module with NE5532 OPAMP With 5.5mm power interface. 100W mono subwoofer, outstanding effect.Oreilet Oreilet 30W Shortwave Power Amplifier Board, CW SSB Linear High Frequency Power Amplifier with Universal Interface B for Universal Interface B: Features a universal Interface B that allows for direct connection of the power line to the pads,KOMBIUDA KOMBIUDA 30w Digital Power Amplifier Board Home Audio Subwoofer Amplifier Stereo Module Sub amp board--the dual-board design of this digital amplifier board enhances the stereo effect, providing realistic andMerlin Blencowe Designing Power Supplies for Valve Amplifiers, Second Edition Designing Power Supplies For Valve Amplifiers, Second EditionJiawu Jiawu Power Amplifier Board, Mono Channel Amplifier Board, High Power Component for Equipment The module uses electronic components, stable performance and high output powerAnneome Anneome Amplifier Board Power Supply Stereo Amp Module DIY Soldering Kit Audio Power Amplifier Digital power amplifier board--can be easily powered by a 12v source, making it convenient to connect to a 12v battery,s