100w 0.01 ~ 100k caixa de metal de alumínio resistor enrolado 0.1 0.5 1 1.5 2 6 8 10 20 100 150 200 300 1k 10k ohm rx24

Audio Power Stereo Amplifier AV-568BT Bluetooth Amplifier 2.0 Channel 50Wx2 With 2 RCA Inputs USB SD Readers EU/US Plug

Bluetooth Digital Power Amplifier Board Module TDA7498E160W+160W+220W High and Low Tone Subwoofer Amplifier AUX/USB ZK-HT21

Bluetooth 5.0 Digital Amplifier Board 2.1 Channel 50W*2 100W Large Power Output for Home Sound Systems Adjustable Bass Treble

Whizzer DA1 Portable DAC USB C Amplifier, Mini USB C Dongle with Mic Volume Control for Headphones Smart Phones Earphones

SUNBUCK 4.1 Channel 500W Bluetooth Remote Control Amplifier 14 Segment Balanced KTV Home Karaoke USB SD Audio Power Amplifier

Nobsound HiFi Hybird Stereo Valve Tube Amplifier Bluetooth 5.0 Audio Receiver COAX / OPT Power Amp USB Player

AK45/AK35 800W Home Power Amplifier 2 Channel Bluetooth 5.0 Mini Hifi Digital Stereo Sound Amplifier Support FM USB SD Mic input

DC 12V Digital Car Speaker Mini Digital Car Auto Amplifier Hifi Audio Music CD DVD MP3 FM Player Aluminum Alloy

AK380 Bluetooth-Compatible Amplifier 2 Channel Mini Audio Amplifier HIFI Bass 40W+40W Music Player USB AUX for Home Car

200W 1943 + 5200 High Mono Power Tube Finished Amplifier Board Electronic Component Kit