E02i is one kind of multifunctional portable headphone amplifier which is specially designed for products from APPLE Company. Connecting with headphone output jack of iPhone can not only improve sound quality and but also realize all functions of original line-control headphone.
It is a update to the aging E1 and E3 designs. It features a small size but packed with features. It has a built in headphone amplifier, "High SNR" Microphone, bass boost, bypass option, 10 hour battery, inline control compatible with iPhone, metal shielding to better "shield the disturbance"(EMI presumably), and "excellent circuit design".
Clear Sounding IEM from Astrotec
Fischer Audio TBA-04 IEM
TBA stands for Triple Balanced Armature, which is exactly the point. 3 armature drivers carefully...
Summary of Project H: Inside Project-H is a FULL Objective 2 amplifier. It features a Burr Brown...
SYBA Oblanc U.F.O. Circumaural Headphones with Invisible In-line Microphone, YELLOW
Massive 50mm driver designed and tuned for acclaimed sound clarity and perfect range. Delivers a...
SYBA Oblanc SHELL Circumaural 2.1 Headphones Treble and Subwoofer Dual Drivers in each Ear Cup, Black
The built-in rechargeable battery powers amplified subwoofer in each ear cup improves vocals, and...