Apple MacBook Pro 13in i5 2.9GHz (MF841LL/A), 8GB Memory, 256GB Solid State Drive, MacOS 10.12 Sierra (MF841LL/A 2.9GHz / 8GB Memory / 256GB SSD) (Renewed)

🎤【HiFi Stereo AMP 】This Dual channel stereo digital amplifier offer 300W+300W peak power and 40W+40W rated power. Amplifier can input 12-240V. 🎤【Wide Application】Compatible with mobile phones, computers, tablets, notebooks, TVs and projectors with AV audio etc. Recommend for home TV audio, computer audio system-game, tower Speaker, garden speaker. Small simple compact design also for car audio system. 🎤【Cardioid Dynamic Karaoke Microphone】This handheld dynamic microphone features a cardioid pickup pattern captures source signal such as guitar amplifier or vocalist, while shunning off-axis sound minimizing background noise & feedback reproducing audio without interference from instruments or speakers on stage.It is perfect for live recordings or performances. 🎤【Suitable for Various Settings】The dynamic cardioid microphone delivers an low distortion for clean sound output, precise reproduction of speech and vocals with excellent intelligibility.This karaoke microphone system is ideal for professional KTV, stage performances, business meetings, public speaking, family or friend gatherings, outdoor performances, and more. Whether you are a beginner or a professional user, this microphone is suitable for all. 🎤【Bluetooth 5.0 】Built-in bluetooth 5.0 core, no pop, no audible noise when Bluetooth connection is established, designed for the customers who pursue HiFi sound. (NOTE: Please keep the distance within 30ft/10m between the device and amplifier without any wall blocking. But if you are connecting whith TV or PC devices, please keep the distance within 15ft/5m.)

[300W Power]Daakro BT-298A Audio Amplifier is a multi-function home stereo amplifier, compact and powerful,that provides 50W + 50W rated power and a maximum output of 300W + 300W. perfectly suitable for 4-16 inch passive speakers.This little BT amplifier which is perfect for karaoke, home theater, and acoustic sound systems. It's great for small apartments, bedrooms, offices, basements, and garages. Its compact size design fits easily into your bookshelf or A/V cabinets. [Various Input Options] Connect your music streaming devices such as PC, mobile, or laptop via Bluetooth, RCA, or MIC input. It also supports USB, SD/TF card ports, and FM radio. You can enjoy your music the way you want to. (Note: Please keep the distance within 16.4 ft/5m between the device and amplifier without any wall blocking. If you are connecting with PC devices, please keep the distance within 6.5 ft/2m.) [Hi-Fi Amplifier] Designed for those seeking high-fidelity sound quality, this amplifier features 2 enhanced audio processing chips and powerful sound processing technology for low distortion output and high-fidelity sound quality. Treble, bass, and echo can be adjusted according to personal preference. The equalizer optimizes the sound for better output through a speaker or subwoofer. [Easy Operation]Conveniently change audio settings from a distance with the included mini remote control. (NOTE: Remove battery insulating sheet on remote upon receipt for it to work,Remote control can ONLY remotely control the volume of MP3/BT/FM.) Set the desired output of music with bass and treble control knobs. Enjoy a clear and detailed display with our amp that comes with a built-in digital LED display. [Wide Application]The BT-298 Pro audio amplifier compatible with mobile phones, computers, tablets, notebooks,and projectors with AV audio etc. Recommend for home TV audio, computer audio system-game, tower Speaker, garden speaker. Small simple compact design also for car audio system.

[20W+20W POWER]This is a multi-function home stereo amplifier, compact and powerful, offer 20W+20W rated power output. You can enjoy clear and clean sound with stereo effect from this small amplifier.Which is perfect for karaoke, home theater, and acoustic sound systems. It's great for small apartments, bedrooms, offices, basements, and garages. Its compact size design fits easily into your bookshelf or A/V cabinets. [Bass, Treble and Subwoofer Volume Controls] Daakro's ST-838 audio amplifier is designed with master volume, treble and bass control knobs for finer adjustment of sound effects, fun and playability. In addition to the master volume, treble and bass control knobs, a sub volume control knob is specially designed. You can adjust the volume of the passive subwoofer and the two passive speakers separately as needed. [RCA and AUX Inputs]The car audio amplifier is equipped with standard stereo RCA and 3.5mm AUX inputs, which are compatible with a variety of devices such as mobile phones, MP3, MP4, CD players, TVs, computers and more. You can enjoy music the way you want. In addition, there is a blue subwoofer alert when the subwoofer jumps. [Mini Elegant Size But Powerful]Ultra small size (5.9*3.5*1.3 inch) with metallic colorful shell, advanced technology and chip, our Bluetooth stereo amplifier has good sound quality, no distortion, no hum or hiss and sounds clear, crisp. [Service Guarantee]Please note that our audio amplifier does not come with a power supply, you need to equip your own DC 12V 3A power supply. If you have any questions about our products, please feel free to contact us. Our professional customer service staff will respond to your email within 24 hours.

[Dual TPA3116D2 HiFi Chip]Daakro ZK-TB21 Bluetooth Amplifier Board uses the original imported TPA3116D2 HiFi amplifier chip with PurePath technology for ultra-high resolution, ultra-low distortion and high-fidelity sound quality. Supports 2.1-channel configuration, including left channel, right channel and subwoofer output. The left and right channels each provide 50W output power, and the subwoofer can reach a maximum output power of 100W, creating an immersive sound experience. [Dual Audio Input Modes] This amplifier board integrates AUX and Bluetooth 5.0 input methods. You can seamlessly connect with the latest Bluetooth 5.0 technology and enjoy the convenience of wireless, or you can choose the traditional AUX input connection to access the audio source. The vast majority of devices can be used, such as mobile phones, TVs, laptops, etc. It is very easy to connect and use, enjoy the fun of music. [Wide Application]The Daakro ZK-TB21 amplifier board supports a wide input voltage range from 12V to 24V DC, and can be powered by 12V, 15V, 18V, or 24V. This adaptability ensures that you can easily find the right power source. The board is suitable for 30-200W, 4-8Ω speakers, and can be perfectly matched with speakers of all sizes. This means you can choose the right power supply and speakers according to your actual needs. [Comprehensive Protection]The Daakro ZK-TB21 Bluetooth Amplifier Board has a comprehensive built-in protection mechanism, including over-voltage protection, under-voltage protection, over-temperature protection, short-circuit protection and reverse connection protection. These smart protection features ensure that your device is protected in every situation, so you can enjoy your music with confidence. [Optimal Power Matching]Note that optimal audio output requires the correct combination of adequate audio input with appropriate power supply voltage and current. Different loudspeaker impedances affect relative sound power. A loudspeaker with a higher impedance will produce less relative sound power with sufficient voltage and current. Please be aware of these factors to optimize your audio experience.