Can the battery be replaced?

When the battery on mine failed, I bought an Anker PowerCore Fusion 5000 (on sale) for under $20 on Amazon. Plugged into the micro USB port on the amp, it effectively replaces the much smaller internal battery. It's not elegant but it works well.

can it be hook up to a stereo system

This will take audio over a 3.5mm audio input jack from any source and amplify it. It has no DAC, it is intended only to increase volume of an existing analogue signal. A stereo could be connected, but typically already has enough power to drive headphones. This is more useful for underpowered devices, like phones, tablets, and laptops, especially to connect headphones that weren't designed for use with such modern devices.

Does it come with a audio cord for phones?

When I got mine, the included cord was very short, about 1.5" long with right-angle 3.5mm plugs on both ends. I am not sure if this changed, since some of the earlier responses suggest the cord is longer. I found this to be too short for my needs and decided to buy a 6" 3.5mm cord separately.

does the usb connect through a pc to operate?

Hi, thank you for your inquiry. The USB is for charging.You use the 1/8" stereo jacks to operate.Visit our store - TheCameraBox - The Best Electronics Source with a Warranty on all Items!

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Description

🎶 Elevate your audio game with Fiio A3 – where style meets sound!

BUILT TO LAST - Sturdy aluminum body shields against EM interference.
TAILORED FOR YOU - Gain switch for perfect headphone power matching.
POWER UP YOUR PLAY - Enjoy up to 16 hours of uninterrupted music bliss.
UNLEASH YOUR SOUND - Transform your listening experience with superior audio quality.
MINIMALIST ELEGANCE - Sleek design that complements your professional lifestyle.

The Fiio A3 Portable Headphone Amplifier is a high-performance audio device designed for headphones ranging from 16 to 150 Ohms. It features a gain switch for optimal output matching, a fully discrete bass boost circuit, and a robust aluminum chassis that minimizes EM interference. With a powerful 1400mAh battery, it offers up to 16 hours of playtime, making it the perfect companion for music lovers on the go.

Specifications

Control Method	Touch
Control Type	Volume Control
Unit Count	1.0 Count
Item Weight	92 Grams
Connectivity Technology	Wired
Headphone Jack	3.5 mm Jack
Frequency Range	20 Hz - 20,000 Hz
Headphone Folding Features	Over Ear
Earpiece Shape	Over-ear cups
Headphones Ear Placement	Over Ear
Style Name	Minimalist
Color	Black
Battery Average Life	16 Hours
Battery Charge Time	16 Hours
Is Electric	Yes
Number of Power Levels	2
Antenna Location	Music
Compatible Devices	Devices with a 3.5mm headphone jack or suitable adapter
Additional Features	Lightweight
Enclosure Material	Aluminum
Specific Uses For Product	Music

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