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The FiiO E3 headphone amplifier offers improved sound quality and makes an efficient audio source for MP3 players iPods personal media players mobile phones laptops notebooks/netbooks or portable CD players. With built-in volume controls the E5 can be used with the line-level output of audio sources for highly-compatible sound quality. It comes with an entirely new amplifier platform that works well with high impedance headphones.Designed for high impendence and low sensitivity headphones with bass boost function Small and easy to carry and use in the outdoors Increase your music player's play time Uses only one AAA battery for 20 hours playtime... » read more

The Fiio E9i is the well-designed desktop headphone amplifier for iPod/iPhone that features a volume control with a power switch knob. Featuring a power indicator light this desktop headphone amplifier that comes with a stereo sound source output connector and stereo line input connector. With DC power port and USB interface it features an iPod/iPhone DOCK connector and comes with a power indicator light. Dual- channel power output 3.5 and 6.35 for two headphone plug TIs main power amplifier with a noise 5uVrms low distortion 0.00014%THD+N high conversion rate 1300V/uS the current feedback IC: TPA6120 With on/off mute function: is sealed relays to do the amplifier output protection sealed with low-noise ALPS potentiometer. Internal audio buffer amplification BB OPA2134: FET input has advantages: 8nVsqrHz low distortion 0.00008%THD high switching rate: 20V/uS and so on. APPLE base achieve iPod iPhone the line out of output amplifier charging device connected to the computer through USB synchronization data exchange. With LOW ( 10dB ) /HIGH(18dB) gain selection. Two audio output: adjustable via E9i output (3.5mm hole) fixed not adjustable output (RCA output) Built-in power converter of high efficiency high precision and low noise power converters to meet the high dynamic signal processing. LED power indicator Power. Headphone into the priority output plug in your headphones the external output RCA invalid 3.5mm invalid.... » read more

The Fiio E7 a portable headphone amplifier and USB sound adapter is an ideal successor of the popular E3 and E5. The Fiio E7 offers improved sound quality and makes an efficient audio source for MP3 players iPods personal media players mobile phones laptops notebooks/netbooks or portable CD players. Featuring built-in volume control it comes with an entirely new amplifier platform that works well with high impedance headphones.USB audio decoding and output for PC functioning as a high quality external USB soundcardTexas Instruments PCM2706 serves as USB receiver. For better sound quality a Wolfson WM8740 serves as digital-to-analog convertor (DAC) pairing with a high performance operational amplifier from ADI for the DAC circuitBuild-in headphone amplifier utilizing AD8692 and Texas Instruments TPA6130A as pre- and power-amp for high performance good resolution low distortion and powerful outputStandard 3.5mm stereo line-in jack for portable amplification with conventional audio sourceDual 3.5mm headphone output jack. Convenient design makes it easy to share music between two listenersWorlds first portable headphone amplifier with dual colors OLED displayEasy to use digital volume control function with great precision and channel balanceBuild-in EQ for 3 levels of Bass BoostBuild-in rechargeable 1050 mAH Li-ion battery for 80 hours of continuous operationSpecialized dock for connecting E9 to experience an even higher performanceQuality anodized aluminum satin finish case design small and compact ideal to be wrapped together with digital audio playerUser selectable USB charging function to help prolong battery lifespan and lower distortion from power supply circuitUser definable startup volume memory and maximum volume limiter to protect user from hearing damage due to loud volumeAutomatic keylock featureUser definable sleep timer function and total runtime display.... » read more

The small-size and easy to carry Fiio E11 headphone amplifier has a built-in high-performance lithium battery and three level bass boot to meet different sound needs. With high efficiency and low noise power boost it comes equipped with a precision separate pressure for dual-supply satisfy large dynamic signal. The option of two level gains makes it suitable for using with different phones. The charge priority function and volume control feature makes this a long-lasting gadget that ensures low noise and good channel balance.Small size easy to carryBuilt-in high-performance lithium battery standard BL-5B model convenient to replace.High efficiency and low noise power boost precision separate pressure for dual-supply satisfy large dynamic signal.Heavy current three channels amplified circuit effective to lower the output impedance.Volume control use the closed APLS potentiometer ensure the low noise and good channel balance.Three levels bass boot can meet different needs of the sound.Two levels gain option suitable for using with different phones.Two levels working voltage option satisfy different needs of the trends (hidden design)Auto-lock protective circuit will cut off automatically when abnormal cases happened to protect the headset and your hearing.Charge priority function: This machine will stop working immediately when charge it meanwhile red light is on and blue one off. When the battery has been charged completely please unplug the external source this machine begin to work again at the same time the red light off blue light on.... » read more

Stereo volume controlFor all headphones with 3.5 mm jack plug 5.2 m cable with separate left/right volume controls... » read more

The Fiio E17 portable headphone amplifier comes with a USB audio decoder (DAC) that offers dual functionality. Its versatile features support different inputs including optical and coaxial. Giving high quality sound amplification this amplifier also provides drive high-powered high-end headphones with an increased audio quality as the E17 replaces PC on-board sound cards as the primary audio decoder. Standard MINI USB Interface: connect with PC to make digital audio transfer possible and make battery charge possible 3.5mm two-channel Headphone Output: suitable for various headphones with 16Ω～300Ω 3.5mm SPDIF input connector: connect with high-definition player and receive PCM signa 3.5mm Line In interface: connect with audio output LO&PO of audio players. 18 Pin multifunctional interface: to make audio and data transfer possible in conjunction with L7 and E9. work indicator: indicate power on/off and charging status high-brightness of OLED dot matrix screen: display kinds of working and setting information built-in high capacity chargeable Li-ion battery whose use time can reach 15H. Meet listening need by adjusting GAIN BASS TREBLE or BALANCE.... » read more