IASUS Concepts has introduced its Mobile Amp, a portable high-fidelity audio amplifier for mobile devices. The Mobile Amp features an independent rechargeable power source, which the company claims improves audio and power output to headphones, and as a result of lower power demands from the player, extends the playtime of devices like the iPod by up to ?20% to 50%.? Other features include a machined aluminum analog volume control, a piano?

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