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Overview:
HiFi headphone amplifier, delicate, compact, lightweight, and portable, which make it convenient to carry, can output remarkable sound without distortion.

Feature：
1.16-150ΩHiFi headphone amplifier, it is delicate, compact, lightweight, and portable that it can be carry conveniently.
2. 3.5mm AUX input and output, SNR>120Db and THD+N 0.0003%, make it possibility to output not just louder sound, but a sharper and more real stereo sound without distortion.
3.Two-stage gain switch enhances the signal input into the amp circuit for optimal performance of the headphones
4. Aluminum matte surface, fashion design provides you a comfortable handheld feeling while the aluminum matte surface makes it durable.
5. Rechargeable lithium battery, it adopts a rechargeable lithium battery with 1000mAH capacity, which allows it to stay working more than 8 Hours.
6. Universal compatibility, it can remarkably compatible with a various of digital devices, such as MP3 MP4 mobile phone computer.

Specification：(Black，Grey)
Maximum power output:250mW in Impedance 16Ω
Load impedance: 16-150Ω
Amp Internal Voltage: ±4V
Charging voltage: DC5V
Frequency response: 20Hz-20kHz(±3dB)
Battery capacity: 1500mAh (3,7V) Lithium-Battery
Amp Using Time: More Than 8 Hours

Package Content:
1 x Headphone Amplifier
1 x USB Power Cable
1 x Audio Cable
1 x User's Manual

Silver (BLUETOOTH ) Overview：
This HiFi headphone amplifier design is normally used to drive a headphone with a relatively high impedance. It can connect various audio players and mobile phones to process, amplify and output its audio signals, which can drive all kinds of earphones.

Note:
For Iphone you are probably required to pair your phone with our headphone amplifier each time. Please follow below: Settings---Bluetooth---My Device, then click "Noteck RX5.0" to pair.

Features:

• HiFi Headphone Amplifier, It supports most headphones of high impedance 16-150Ω, 3.5mm AUX Input and Output, signal-to-noise ratio> 100Db, THD + N = 0.0003%, fully filter noise, enjoy high-quality audio.
• Bluetooth 5.0 Receiver, It is designed to deliver studio-quality sound to your ears through wireless Bluetooth 5.0 technology-suitable for your existing wired headphones, earphones and even speakers.
• 1500mAH Rechargable Lithium Battery, It adopts a rechargeable lithium battery with 1500mAH capacity, which allows it to stay working more than 8 hours. Plus, there is a volume control knob for volume adjustment.
• Two-stage Gain Switch, It enhances the signal input into the amp circuit for the optimal performance of the headphones. Make it Possibility to output not only louder sound but a sharper and more Real stereo sound without distortion
• Broad Compatibility, This amplifier is remarkably compatible with a variety of digital devices, such as MP3, MP4, Mobile Phone, Computer, CD players and personal media player.

Specification：
Lithium battery capacity: 1500mAH
Amp using time: more than 8 hours
Bluetooth decoding mode: SBC, AAC
Bluetooth protocol: A2DP V1.3.1, AVRCP V1.6 ,HFP V1.7, HSP V1.2
Bluetooth distance: 8m Max
Amp battery voltage: DC3.7V - 4V
Amp internal working voltage: ±4V


Power Output:
16Ω L: 90mw H: 105mw（Gain）
32Ω L: 74mw H: 80mw（Gain）
64Ω L: 45mw H: 50mw（Gain）
150Ω L: 26mw H: 32mw（Gain）

Package Content:
1 x Bluetooth Headphone Amplifier
1 x USB Power Cable
1 x 100cm Audio Cable
1 x User's Manual