AIYIMA DAC-A2 Headphone Amplifier DAC with Bass Treble Controls PC-USB/Optical/Coaxial Inputs, RCA/3.5mm Headphone Ouput Digital to Analog Desktop Audio Converter DC 5V 24Bit 192kHz
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AI Verdict
A cheap and cheerful way to get much better sound than your computer's built-in headphone jack, especially if you want physical bass and treble knobs.
For its target audience—someone tired of their computer's crummy audio—this is a huge upgrade for a small price. It solves the core problems of low volume and poor clarity while adding versatile inputs and physical tone controls, features almost unheard of in this price band.
If you need to power very demanding headphones (over 250 ohms), look for a DAC/amp with a higher power output, often specified in milliwatts (mW) into a certain load.
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Pros
- Physical bass and treble knobs provide easy, software-free tone control.
- Versatile inputs with PC-USB, Optical, and Coaxial options.
- Powers headphones up to 200 ohms, a good match for many mid-range models.
- Solid-feeling metal case gives it a durable, desktop presence.
- Provides a noticeable improvement in clarity and power over standard motherboard audio.
- RCA and 3.5mm headphone outputs can be used to connect to powered speakers or headphones.
Cons
- PC-USB input is limited to 24-bit/96kHz resolution; you need optical/coaxial for 192kHz.
- Some users report a hiss or noise floor, especially with sensitive IEMs (In-Ear Monitors).
- The blue power LED is reported to be distractingly bright.
- The volume knob can be sensitive, with large volume jumps at the low end of its range.
- Doesn't include a 5V power adapter brick, only a USB cable for power.
Dimension Scores
Provides a clean, clear improvement over integrated PC audio, though some users report a slight hiss with sensitive headphones.
The dedicated bass/treble knobs offer effective tone shaping, and it drives headphones up to 200 ohms with authority.
Having PC-USB, Optical, and Coaxial inputs is exceptionally versatile for a device in this budget price band.
The metal enclosure feels solid and well-built, but at 14.8 ounces and requiring a separate power source, it's a desktop unit, not portable.
Best For
- Upgrading from the noisy or weak headphone jack on a desktop PC or Mac.
- Connecting a TV or game console (like a PS4) via optical cable to a pair of headphones.
- Driving popular mid-range headphones like the Sennheiser HD series or Beyerdynamic DT series on a budget.
- Users who want simple, physical knobs to tweak bass and treble without software EQs.
Not Recommended For
- Audiophiles seeking absolute signal purity and the lowest possible noise floor.
- Powering extremely demanding high-impedance or planar magnetic headphones.
- Users who need high-resolution 192kHz audio playback via USB.
Watch Out For
- You need to supply your own 5V USB power brick, as one is not included in the box.
- The bright blue power LED can be a nuisance in a dark room; many users resort to covering it with tape.
- With very sensitive headphones or IEMs, you might notice a background hiss when no audio is playing.
- Plugging in headphones automatically disconnects the RCA output on some versions, which can be inconvenient if you want both active.
Full Specifications
| ASIN | B07TBF488G |
| Brand | AIYIMA |
| Material | Metal |
| Item Weight | 14.8 ounces |
| Manufacturer | AIYIMA |
| Mounting Type | Cable Mount |
| Interface Type | Coaxial, USB |
| Number of Pins | 6 |
| Item model number | DAC-A2 |
| Number of Channels | 1 |
| Product Dimensions | 3.86"L x 2.89"W |
| Maximum Supply Voltage | 5 Volts |
| Minimum Supply Voltage | 5 Volts (DC) |
| Is Discontinued By Manufacturer | No |
What Buyers Say
The most common reaction to the AIYIMA DAC-A2 is surprise at just how much of an audio upgrade it is for such a low price. It's a clear step up from the typical static and weakness of motherboard audio, providing more power and clarity. The physical bass and treble knobs are a standout feature, allowing for quick, tactile sound adjustments that users love. While it's praised for its versatile inputs (USB, optical, coaxial), a recurring complaint is the absurdly bright blue power LED. Some users with very sensitive in-ear monitors have also noted a faint background hiss, but for most over-ear headphones, it's a non-issue.
“1000% better than my PC's headphone jack, this little box is magic for the price, i can finally hear footsteps in games and the bass actually hits now, just had to put electrical tape over the blue light that was trying to burn a hole in my wall.”
Common Praise
- The bass and treble knobs are genuinely useful and a rare feature at this price.
- Drives headphones like the Sennheiser HD58X and Beyerdynamic DT 770 (250 ohm) surprisingly well.
- Immediately noticeable improvement in sound clarity and volume over the PC headphone jack.
- Excellent value; feels like it punches well above its weight for the cost.
- The metal housing feels sturdy and has a nice weight to it.
- Multiple digital inputs make it easy to connect a PC, TV, and game console.
Common Complaints
- The blue power indicator LED is blindingly bright and needs to be covered.
- A slight hiss or noise floor can be audible with highly sensitive IEMs.
- The volume knob can be a bit scratchy or cause channel imbalance at the very lowest volume settings.
- USB input is limited to 96kHz, while optical/coaxial support 192kHz.
- Doesn't include the 5V USB power brick needed to operate it.
Ownership Tips
- You'll end up covering the bright blue power LED with a piece of tape within the first week.
- After getting used to the tone controls, you'll wonder how you lived with flat, unadjustable audio for so long.
- The small, light unit can slide around your desk easily, so a bit of double-sided tape or a non-slip mat underneath is a good idea.
- You might find yourself re-listening to old favorite songs just to hear details you missed before.
- Figuring out you can swap the NE5532 op-amp chip for a different one can be a fun (and cheap) way to start experimenting with audio hardware mods.
Frequently Asked Questions
Do I need to install any drivers to use this with my computer?
No, it's a plug-and-play device on Windows, Mac, and Linux systems without needing any special drivers.
Can I use the headphone jack and the RCA outputs at the same time?
Some user manuals state that plugging in headphones will automatically cut the RCA output. However, other sources suggest they can be active simultaneously, so this may vary by revision.
Does it come with a power adapter?
No, it comes with a USB power cable but you must provide your own 5V USB wall adapter, like a standard phone charger.
Will this be a big improvement over my computer's built-in audio?
Yes, users consistently report a significant improvement in sound clarity, volume, and dynamics compared to plugging headphones directly into a PC motherboard's audio jack.
Is this powerful enough for 250-ohm headphones like the Beyerdynamic DT 770/990 Pro?
It's officially rated for up to 200 ohms, but many users report successfully and happily using it with 250-ohm headphones, noting a massive improvement over no amp at all.
What do the bass and treble knobs do?
They allow you to increase or decrease the low and high frequencies by +/- 6dB, letting you adjust the sound to your preference without needing software.
Buying Guide
Think of your computer's headphone jack as a leaky, low-pressure garden hose. A DAC/Amp like the AIYIMA DAC-A2 is like installing a proper, high-pressure spigot. It takes the pure digital audio from your PC or TV (via USB or Optical), cleanly converts it to an analog signal (the DAC part), and then gives it enough power to properly drive your headphones (the Amp part). This results in clearer, louder, and more dynamic sound. The bass/treble knobs on this unit are a rare bonus, letting you season the sound to your taste.
Inputs (PC-USB/Optical/Coaxial)
These are the doors for your sound to get in. PC-USB is for your computer. Optical is perfect for your TV or PlayStation, as it prevents any electrical noise from the source. Coaxial is less common but useful for some CD or DVD players. Having all three makes this box incredibly flexible.
Headphone Impedance (16-200 ohm)
This is a measure of electrical resistance, like how hard the amp has to 'push' to make your headphones work. This range covers everything from cheap earbuds to serious entry-level audiophile headphones, making it a safe bet for most people.
Tone Controls (Bass & Treble)
Instead of fiddling with confusing software equalizers, you just turn a knob. If your headphones sound a bit too sharp, turn down the treble. If a song needs more punch, turn up the bass. It's simple, immediate, and works with any source you plug in.
Alternatives
If you don't need the extra inputs or tone controls, search for a simple 'USB DAC dongle' for a more portable solution. If you have very power-hungry headphones (like planar magnetics or models over 300 ohms), search for a 'desktop headphone amplifier' with higher power output, usually listed in milliwatts (mW).
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