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4pcs Max9814 -microphone Amplifier,automatic Gain Control for ArduinoPrice: 362.0

4 Input 6 Output Dsp Audio Processor Car Dsp Car Power AmplifierPrice: 2125.0

2 PCS XH-A232 Dual-Channel 20W High Power Digital Board MP3 Audio Power Amplifier Board Module, 2...Price: 551.61

2CH Channel Optocoupler Isolation Relay Module 5V/12V/24V SCM PLC Signal Amplifier ... (VOLTAGE: 5V)Price: 354.0

Star Sound SSA-JS-9000.4 JigSaw 4-Channel Amplifier (9000W)Price: 849.0

ISOLATING AMPLIFIER DIL I=4-20mA O=4-20mA T1100NPrice: 350.88

Hd Tv Antenna,4k Hdtv Antenna 50miles Range with AmplifierPrice: 340.0

YS-AS21 2.1 Channel bluetooth 5.1 Digital Power Amplifier Board 220W2+350W High Low-pitched SubwoofePrice: 1292.75

Reference Audio TIVO-9000.4 100rms x 4 Class D Amplifier - Car AudioPrice: 2095.0

BlackSpider BSA20.4 20000W 4 Channel AmplifierPrice: 1249.0

RF2126 400MHZ-2700MHZ Broadband RF Power Amplifier 2.4GHZ 1W for bluetooth Ham Radio Amplifier withPrice: 473.98

DY-AP3015 DC 8-24V 30W x 2 Class D Dual Channel High Power Stereo Digital Amplifier Board with AdjusPrice: 419.0

XH-M573 High Power 2.1 Channel TPA3116D2 Digital Amplifier Board 80W+80W+100WPrice: 416.42

Board Only - ZK-MT21 100W+2*50W 2.1 Channel Subwoofer Digital Power Amplifier Board AUX 12/24V AudioPrice: 462.32

Targa TA-K19500.4 Killa Series 19500w 125rms 4 Channel AmplifierPrice: 989.0

FSA 2x Mono Class-D 44W Power Amplifier BIGJOE4Price: 6000.0

TPA3116 PBTL DC 11-26V Dual Channel 2x100W Digital Power Amplifier Board 2 Chips Stereo High Power APrice: 498.0

(D800) D800 D900 2.1 Channel Bluetooth Audio Amplifier Board 50W Subwoofer 100W HiFi Wireless SpeakePrice: 864.01

Geekcreit TPA3110 bluetooth 4.2 Digital Amplifier Board 15Wx2 Class D Stereo Power Amplifier DC 8VPrice: 441.0

BlackSpider BSA80.2 8000W 2 Channel AmplifierPrice: 795.0

Shell - TPA3116 50W*2+100W bluetooth 5.0 High Power Audio Amplifier Board 2.1 Sound Channel Bass SupPrice: 307.22

Bluetooth 4.2 Subwoofer Audio Amplifier 100w Hifi Stereo Tpa3116Price: 1169.0

Renesas (CA3140MZ) Operational Amplifier, 1 AmplifierPrice: 225.0

DAHUA ANALOG 4 CHANNEL FULL-CHANNEL AI-CODING 4K RECORDINGPrice: 1002.54

Starsound SSA-G-9400.4 Gladiator Series 65rms x 4 AmplifierPrice: 1149.0

DIGITAL AUDIO POWER AMPLIFIER 120W 4.5-26V XH-M543Price: 493.88

Digital Audio Power Amplifier 120 W 4.5 26 V Xh M543Price: 619.84

Renesas (CA3140EZ) Operational Amplifier, 1 AmplifierPrice: 229.0

YS-E100L 2.1 Channel bluetooth 5.1 Audio Amplifier Board 50W2+100W High Low Pitched Subwoofer AmplifPrice: 473.98

Targa TG-H26500.4 Hitman Series 26500 175w rms 4 Channel AmplifierPrice: 1699.0