Will it drive 300 ohm headphones?

It is rated for headphones from 16 to 300 ohms, and the high gain setting is meant for the upper end of that range. Very hard-to-drive planar headphones at 300 ohms may still want more power than a portable amp of this size provides.

No. It is an analog amplifier with a 3.5mm input and a 3.5mm output, so your phone or player still does the digital-to-analog conversion.

How long does the battery last?

The 1000mAh battery is rated for more than 8 hours of playback. Expect less at high gain and high volume.

What is the gain switch for?

It has two gain stages. Use low gain for sensitive in-ear monitors to keep the noise floor down, and high gain for higher-impedance or less sensitive headphones.

What comes in the box?

The amp and a USB charging cable. You supply your own 3.5mm cable to connect your source and headphones.

Can I use it with a phone that has no headphone jack?

Only if you add a USB-C or Lightning-to-3.5mm adapter, since the amp takes an analog 3.5mm input.

16-300Ω HIFI Headphone Amplifier Portable Earphone AMP 3.5mm w/ Audio USB Cable

Best price now

$17.49at My StoreChecked Nov 9

Prices are checked against each store and labelled with when.

Visit My Store

16-300Ω HIFI Headphone Amplifier Portable Earphone AMP 3.5mm w/ Audio USB Cable

Best price now

$17.49at My StoreChecked Nov 9

Prices are checked against each store and labelled with when.

Visit My Store

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Price facts

Last seen at $17.49 at My Store on Nov 9.

Our take on the 16-300Ω HIFI Headphone Amplifier Portable Earphone AMP 3.5mm w/ Audio USB Cable

A small aluminum-bodied headphone amp with a single 3.5mm input and output, a two-stage gain switch and a 1000mAh battery rated for more than 8 hours. It is meant to add volume and headroom to phones, laptops and players driving headphones from 16 to 300 ohms. Against rivals it is a plain stereo analog amp: no DAC, no Bluetooth, no balanced output and no tone controls, so it competes on gain flexibility and battery life rather than features. It suits listeners whose source is too quiet for their headphones, not people chasing a built-in digital converter.

Best forPhone and laptop listeners whose headphones play too quietlyOwners of 32-300 ohm headphones wanting extra headroomTravelers who want a battery-powered amp with no DAC

Pros

Two-stage gain switch covers low- and high-impedance headphones
Rated for more than 8 hours per charge from a 1000mAh battery
Aluminum body is more durable than plastic rivals
Simple 3.5mm in and out works with most phones, players and laptops
Small enough to stack with a phone or player

Cons

No built-in DAC, so it only amplifies the analog signal you feed it
Single-ended 3.5mm only; no balanced output
No tone controls, bass boost or EQ
No Bluetooth or digital input
Battery is charged over USB, so it needs a cable and time to top up

16-300Ω HIFI Headphone Amplifier Portable Earphone AMP 3.5mm w/ Audio USB Cable prices at every store

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$17.49Checked Nov 9
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About the 16-300Ω HIFI Headphone Amplifier Portable Earphone AMP 3.5mm w/ Audio USB Cable

This is a portable headphone amplifier with an aluminum body. It has one 3.5mm AUX input and one 3.5mm AUX output, and it outputs stereo sound.

It drives headphones with an impedance of 16-300Ω. A two-stage gain switch lets you adjust the gain. The built-in 1000mAh battery runs for more than 8 hours.

Headphone impedance: 16-300Ω
Battery capacity: 1000mAh
Battery life: More than 8 hours
Material: Aluminum
Color: Black
Inputs: 1 x 3.5mm AUX
Outputs: 1 x 3.5mm AUX
Sound format: Stereo
Gain: Two-stage gain switch

Specifications

Headphone impedance: 16-300ΩSource
Battery capacity: 1000mAHSource
Material: aluminumSource
Color: BlackSource
Audio outputs: 3.5mm AUXSource
Audio inputs: AUXSource
Number of outputs: 1Source
Number of inputs: 1Source
Surround sound formats: stereoSource
Battery life: more than 8 hoursSource
Input and output: 3.5mm AUXSource
Gain switch: Two-stage Gain SwitchSource

Questions and answers

Will it drive 300 ohm headphones?: It is rated for headphones from 16 to 300 ohms, and the high gain setting is meant for the upper end of that range. Very hard-to-drive planar headphones at 300 ohms may still want more power than a portable amp of this size provides.
Does it have a DAC?: No. It is an analog amplifier with a 3.5mm input and a 3.5mm output, so your phone or player still does the digital-to-analog conversion.
How long does the battery last?: The 1000mAh battery is rated for more than 8 hours of playback. Expect less at high gain and high volume.
What is the gain switch for?: It has two gain stages. Use low gain for sensitive in-ear monitors to keep the noise floor down, and high gain for higher-impedance or less sensitive headphones.
What comes in the box?: The amp and a USB charging cable. You supply your own 3.5mm cable to connect your source and headphones.
Can I use it with a phone that has no headphone jack?: Only if you add a USB-C or Lightning-to-3.5mm adapter, since the amp takes an analog 3.5mm input.
Where is the 16-300Ω HIFI Headphone Amplifier Portable Earphone AMP 3.5mm w/ Audio USB Cable cheapest?: At My Store, for $17.49, as of our latest check.