This OPEN BOX product you are browsing has been inspected by our qualified technicians to ensure that it meets factory specifications and includes all factory packed accessories. It is guaranteed to be in perfect working order but it is sold in "AS IS" condition (for example, the box may be torn, there may be cosmetic scratches, etc), returns will not be accepted unless the item is found to be defective. Please contact us with any questions BEFORE placing an order. We accept PayPal and all major credit cards. We do our best to describe each item we are selling to the best of our ability. Bear in mind that the item is sold as-is.
Use the "contact us" page to request additional information or images on this product
Suitable for headphones ranging from 16 to 150 Ohms, the A3 is potent enough to drive all but the most power hungry headphones. Use the low gain setting with high sensitivity IEMs, or switch it to high gain for full size headphones.
Audiophile Grade Design
The A3 offers superior sound quality through expertly selected components and design. Its pre-amplifier section is based on the TI OPA1642, with excellent layering, midrange resolution, and high frequency extension. The power amplifier section relies on the AD8397 for great bass control and smooth drive characteristics.
Sophisticated Bass Boost
A fully discrete bass boost circuit increases output by 3.5dB at 60Hz, producing a gentle swell of low end energy that preserves the overall sound field. The bass boost circuit is completely bypass when off to ensure low noise floor and purity of sound quality.
The A3 is handsome with an all aluminum body and chassis. Not only is it solid and sturdy, it also provides superior shielding from EM interference. A knurled volume knob is mated to a smooth turning ALPS potentiometer. Toggle switches are used for enhanced reliability and are easier to operate. A 1400mAh internal battery powers the A3 for up to 16 hours of use.
- Audio Input: 3.5 mm stereo Jack
- Headphone output: 3.5 mm stereo Jack
- Drive ability: 16 - 150 Ohm
- Power input: recommend DC5V 1A
- Battery Capacity: 1400 mAh
- Battery Life: 16 hrs
- Charging Time: 4 hrs
- THD: 0.004% (1 kHz)
- Output Impedance: 0.2 ohm
- Frequency Response: 20 Hz - 20 kHz
- Weight: 92 g