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)

[Upgraded Power]This AK45 Pro Home Audio Amplifier Receiver has been chip upgraded compared to our previous AK45 Audio Amplifier, and the power rating has been upgraded to 100W, which can support higher power output devices, such as speakers, CD players and so on. Let you enjoy the high quality home audio experience. [Multiple Input Modes]The audio amplifier supports various external signal sources：Connect your music streaming devices such as PC/mobile/laptop with Bluetooth, RCA & MIC input. It also supports USB port, SD/TF card port & FM radio. Just enjoy your music the way you want. (NOTE : Please keep the distance within 16.4ft/5m between the device and amplifier without any wall blocking. But if you connect with PC devices, please keep the distance within 6.5ft/2m). [Wide Application]The AK45 Pro Audio Amplifier compatible with cell phones, computers, tablets, notebooks, etc. Recommended for home TV audio, computer audio system-game, tower speaker, garden speaker. Small simple compact design also for car audio system. [Easy Operation]Conveniently change audio settings from a distance with the included mini remote control. (NOTE: Remove the battery cover on the remote control upon receipt for it to work, the 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 amplifier that comes with a built-in digital LED display. [Hi-Fi Amplifier]Designed for users who demand high fidelity sound quality. Built-in 2 upgraded audio processing chips, powerful sound processing technology ensures low distortion output and high fidelity sound quality, and also minimizes the impact of noise by eliminating the current sound as much as possible.

[300W Power]Daakro AK55 Audio Amplifier is a multi-function home stereo amplifier, compact and powerful,that provides 70W + 70W 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. [Multiple Input Modes]In addition to the Bluetooth function,our home theater receiver Bluetooth amplifier also supports multiple inputs including USB (Maximum 32G), SD card (Maximum 16G),RCA audio inputs for for CD player and DVD player,2*1/4 inch(6.35mm) microphone inputs for karaoke or event hosting,Opt and Cox digital signal input. [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,and high fidelity sound quality,and also minimizes the impact of noise by eliminating the current sound to the greatest extent possible.Treble, bass can be adjusted according to personal preference. The equalizer optimizes the sound for better output through a speaker. [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 AK55 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.

[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.

[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.