The Deal

FiiO headphone amplifier. Choose between the following models:

• $59.99 for an E10 amplifier ($75 list price)
$109.99 for an E17 amplifier ($139 list price)

Click here to see an image of each option.

FiiO E10 and E17 Headphone Amplifiers

FiiO's amplifiers enhance the music piping through your headphones, whether it comes from a fixed or mobile device. The E10 works best with computers, home theater systems, and other static music sources. An included plug-and-play USB cable connects the amplifier to a computer or laptop without the installation of any outside drivers. Headphones then simply connect to the 3.5 mm stereo jack. Once you’re set up, the amplifier boosts sound with premium bit and sample rates of up to 24 bits/96kHz. An integrated bass boost circuit lets you add 3 dB of bass with the flip of a switch. A large volume knob and LED indicator similarly make the amplifier easy to use. Additional connectors—including a 3.5 mm line output and coaxial digital RCA output—can hook up to computer speakers, home theater receivers, or an office building's intercom system. FiiO manages to cram all this technology into an all-aluminum shell that adds durability and resists sound interference. Yet despite all these features, the E10 barely takes up any space, and its rubber feet keep it stable on any flat surface.

Whereas the E10 works best with static sources, the E17 amplifier works best with mobile devices. Nearly all MP3 players, smartphones, and tablets can connect with the E17 via a 3.5 mm line and S/PDIF inputs. It has a USB port, too, so you can still connect to a computer. The built-in lithium-ion battery fuels up to 15 hours of music amplification, and it fully recharges in about 3.5 hours. For those who want to explore the E17's capabilities even further, an 18-pin interface enables audio and data transfers through an L7 line-out or E9 desktop amp (not included).

E10 Headphone Amplifier

• Designed for use with static music sources
• Compatible with most computers and home theater receivers
• Mini USB connector
• Integrated bass boost circuit
• All-aluminum shell for flattening pork tenderloins
• 3.5 mm stereo jack
• 3.5 mm line output
• Coaxial digital RCA output
• Eight rubber feet
• Includes USB cable
• Click here to see further specifications
• Weight: 2.9 oz.
• Dimensions: 3.1" (L) x 0.8" (W) x 1.9" (H)
• Condition: new
One-year warranty from FiiO

E17 Headphone Amplifier

• Designed for use with mobile audio sources
• Compatible with most MP3 players, smartphones, and tablets
• Gain, balance, and tone controls
• OLED display
• Standard 3.5 mm and S/PDIF inputs
• 3.5 mm two-channel stereo headphone jack
• 18-pin docking interface
• Lithium-ion battery runs for up to 15 hours
• Recharges in about 3.5 hours
• Click here to see further specifications
• Weight: 10.4 oz.
• Dimensions: 3.8" (L) x 6" (W) x 2.2" (H)
• Condition: new
One-year warranty from FiiO

In the box: E17 headphone amplifier, soft pouch, optical audio cable, USB cable, 3.5 mm audio cable, 3.5 mm RCA adapter, protective film, two silicone bands, and six rubber feet

How to get your goods: by purchasing this Groupon and providing your name and shipping address, your order is complete!

For questions pertaining to this deal, please visit the deal Q&A on this page. For post-purchase inquiries, please contact Groupon customer service.

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