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Upgrade version AK-45 digital audio amplifier. Fully updated design, 40 W + 40 W rated power, perfectly suitable for 4-8 inch passive speakers. Function extension, add a microphone jack. Besides, the sound quality as a digital amplifier receiver is perfect than ordinary analog amplifiers. With built-in power transmission board that supports AC 110-240V power input and DC 12V/5A power input, ready to use. HiFi stereo effect amplifier receiver▶ 2.0 channel Bluetooth 5.0 stereo digital amplifier receiver can 400Wx2 P.M.P.O (Peak Music Power Output), with powerful audio processing chip, distortion rate: ≤0.5%, signal to noise ratio: 85db, strong anti-interference ability, shielding makes inductance, Low-noise amplifier, Hi-Fi sound effects, you can experience the effect of immersive. Multiple input and multipurpose: this home audio power amplifier, with Bluetooth, AUX, MIC, SD, USB input, audio from external devices, such as CD, DVD, TV, PC, computer, tablets, notebooks, phones, MP3, and projectors with AV audio etc., mini size with FM fraction, ideal for indoor/outdoor, party, car, lesson. With microphone function: the home audio amplifier receiver with microphone input jack, you can sing karaoke with families or friends at home, amplifier with echo and reverb delay function, you get more perfect hi-fi sound quality output. In addition, the audio amplifier with FM function, FM mode can set up more than 20 stations. Easy to use: Bluetooth audio amplifier compatible with two 4-16Ω passive speakers. Power amplifier with remote control for remote audio settings, can read SD card and USB MP3 player, support BT wireless connection, with US plug for easy use, ideal for home theater system.; Product description Features: 1. Bluetooth5.0 RCA SD USB input, 2.0 channel stereo output, little sound distortion. 2. Hi-Fi sound quality, you will enjoy a perfect sound quality experience. 3. Microphone volume and volume control, treble and bass controls. 4. With 2 mic jacks, you can sing karaoka at home. 5. With remote control and US plug for easy operation. 6. U disk and memory card, plug and play. 7. With FM fraction. AK-45 audio amplifier widely compatible with mobile phones, computers, tablets, notebooks, MP3, MP4, TVs and projectors with AV audio etc. Use occasion: AK45 audio amplifier is widely used indoors and Outdoor use, such as family, party, bar, concert, carnival, etc. Specifications: Product Name: 2.0 Channel Bluetooth Audio Power Amplifier Product model: AK45. Version: Bluetooth 5.0 (5 meters when unhindered) Input sensitivity: 500 mV. Signal-to-noise ratio: >85 dB. Frequency: 20-20KHZ Distortion degree: ≤0.5%. Audio input: BT RCA SD USB. Channel: 2.0CH FM fraction: support adapted speaker: 30W and more, 4-16Ω Power range: DC12V/5A, AC 90V-240V, 50-60Hz. Output power: Rated power: 40W-40W, peak power: 300W+300W. Product size: 7.1 x 5.4 x 2.7 inches. Package weight: 1.76 lb. Package includes: 1 x AK45 Audio Power Amplifier 1 x remote control. 1 x EU plug. 1 x FM antenna.; Product description Features: 1. Bluetooth5.0 RCA SD USB input, 2.0 channel stereo output, little sound distortion. 2. Hi-Fi sound quality, you will enjoy a perfect sound quality experience. 3. Microphone volume and volume control, treble and bass controls. 4. With 2 mic jacks, you can sing karaoka at home. 5. With remote control and US plug for easy operation. 6. U disk and memory card, plug and play. 7. With FM fraction. AK-45 audio amplifier widely compatible with mobile phones, computers, tablets, notebooks, MP3, MP4, TVs and projectors with AV audio etc. Use occasion: AK45 audio amplifier is widely used indoors and Outdoor use, such as family, party, bar, concert, carnival, etc. Specifications: Product Name: 2.0 Channel Bluetooth Audio Power Amplifier Product model: AK45. Version: Bluetooth 5.0 (5 meters when unhindered) Input sensitivity: 500 mV. Signal-to-noise ratio: >85 dB. Frequency: 20-20KHZ Distortion degree: ≤0.5%. Audio input: BT RCA SD USB. Channel: 2.0CH FM fraction: support adapted speaker: 30W and more, 4-16Ω Power range: DC12V/5A, AC 90V-240V, 50-60Hz. Output power: Rated power: 40W-40W, peak power: 300W+300W. Product size: 7.1 x 5.4 x 2.7 inches. Package weight: 1.76 lb. Package includes: 1 x AK45 Audio Power Amplifier 1 x remote control. 1 x EU plug. 1 x FM antenna.; Features: 1. Bluetooth5.0 RCA SD USB input, 2.0 channel stereo output, little sound distortion. 2. Hi-Fi sound quality, you will enjoy a perfect sound quality experience. 3. Microphone volume and volume control, treble and bass controls. 4. With 2 mic jacks, you can sing karaoka at home. 5. With remote control and US plug for easy operation. 6. U disk and memory card, plug and play. 7. With FM fraction. AK-45 audio amplifier widely compatible with mobile phones, computers, tablets, notebooks, MP3, MP4, TVs and projectors with AV audio etc. Use occasion: AK45 audio amplifier is widely used indoors and Outdoor use, such as family, party, bar, concert, carnival, etc. Specifications: Product Name: 2.0 Channel Bluetooth Audio Power Amplifier Product model: AK45. Version: Bluetooth 5.0 (5 meters when unhindered) Input sensitivity: 500 mV. Signal-to-noise ratio: >85 dB. Frequency: 20-20KHZ Distortion degree: ≤0.5%. Audio input: BT RCA SD USB. Channel: 2.0CH FM fraction: support adapted speaker: 30W and more, 4-16Ω Power range: DC12V/5A, AC 90V-240V, 50-60Hz. Output power: Rated power: 40W-40W, peak power: 300W+300W. Product size: 7.1 x 5.4 x 2.7 inches. Package weight: 1.76 lb. Package includes: 1 x AK45 Audio Power Amplifier 1 x remote control. 1 x EU plug. 1 x FM antenna.