IASUS EAR3 Helmet Amp: Small Portable Headset Amplifier - Enhances Audio by 10dB for Motorcycle Helmet Comms, Speakers, Smartphones - Includes Mount and Cables Review

[FEATURES] Designed to boost motorcycle speakers. The EAR3 V2 music headset amplifier output increases without any distortion (up to 10dB boost in volume with no more than a 0.3% harmonic distortion). The EAR3 V2 stereo amplifier includes a volume control machined from aluminum providing precise control for volume settings even with motorcycles gloves on. [COMPATIBILITY] The output on the EAR3 audio headphone amplifier is a 3.5mm jack for most helmet speakers, earbuds, or headphones with a 3.5mm pin plug. The input is a 3.5mm pin plug for most motorcycle comm systems, smartphones, iPhone, Samsung and music players. [INSTALLATION] Easy to install. Includes helmet mount with 3m adhesive sticker, short extension cable (5"), long extension cable (10") for flexibility to mount the amplifier on your helmet. [WARRANTY] 30 days money back guarantee and 1 year limited manufacturer warranty. [SPECIFICATIONS] Dimensions: 2.0′′ x 1.5′′ x 0.8′′ (51mm x 37mm x 20mm). Output Power: 55mW per channel x 2 @ 16 Ω55mW per // Channel x 2 @ 16 Ω. Impedance: Input: 1k Ohm // Output: 16-32 Ohm. Sensitivity Frequency Response: 10Hz to 100Khz +0/-0.1dB. S/N Ratio: 80dB. The built-in rechargeable Li-Polymer battery lasts up to 20 hours from a single charge.