FiiO K9 Desktop USB DAC and Headphone Amplifier with Bluetooth

$ 499.99

Aimed at audiophiles and music enthusiasts, the high-fidelity FiiO K9 is a compact desktop USB DAC and headphone amplifier that faithfully reproduces your music when listening to audio from your computer, smartphone, tablet, or other digital music player. The K9 Pro utilizes the legendary AKM AK4499 DAC to deliver rich audio details and a superior performance at up to 32-bit / 768 kHz PCM and DSD512.

The device is equipped with 4.4mm and stereo RCA analog line, and optical, coaxial, and USB-B digital inputs. Selectable LO, PRE, and PO output configurations give you access to a combination of headphone output connectors including 1/4", balanced 4.4mm, and 4-pin XLR, and line outputs: RCA and balanced XLR-3. The K9 Pro acts as a bridge between your computer, mobile phone, speakers, and headphones, allowing them to work together seamlessly. Switchable low-, medium-, and high-gain levels are available, enabling you to use the amplifier with almost any headphones at comfortable volume levels.

At a Glance
  • Drive power-hungry headphones (desktop USB audio + headphones)
  • Connect to home audio setups (desktop USB audio + active speakers)
  • USB-B connector (with included USB-B to USB-C cable) for easy connection to USB-C mobile devices
  • RCA + XLR-3 balanced line out (for active speakers, monitors, external amplifiers)
  • Connect to mobile devices (players, computers)
  • Built-in Bluetooth Low Energy (BLE) technology allows you to use the FiiO Control app to control functions like filter selection, channel balance, and more even when not in Bluetooth mode.

Box Contains

    FiiO K9 Desktop USB DAC and Headphone Amplifier with Bluetooth
  • Power Cord
  • USB-B to USB-C Cable
  • Vertical Mounting Stand
  • 6 x Foot Pad

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Easy 30 Day Return Policy

If you are dissatisfied with your purchase for any reason, you may return it to Kellards within 30 days of the purchase date, subject to the conditions and exclusions below.

You may initiate a return or exchange by requesting an RMA at

Securely affix your return label to the outside of the shipping package. Return shipping fees are the responsibility of the customer. We recommend you ship via insured ground service with a tracking number. We cannot be responsible for lost packages.

Return Address

Kellards Return
3237 Greenpoint Ave.
Long Island City NY 11101

Eligibility Conditions

Please read conditions below. If all conditions are not met, Kellards reserves the right to refuse the return or to charge a minimum 15% restocking fee. All returned items must be in new condition, in their original unaltered box (including an intact UPC code) and must include all packing material, blank warranty cards, manuals and accessories. Kellards can only refund the original purchase price. Shipping and handling fees are nonrefundable.

Nonreturnable Items

  • Electronic software downloads
  • Opened consumable items (e.g., film, tapes, paper, bulbs, CD, DVDs, ink cartridges, etc.)
  • Underwater equipment that has been submerged

Defective or Damaged Items

Defective items may be repaired, exchanged or refunded at our discretion for the same model or manufacturer's equivalent model.


Please allow 3-5 business days for mail-in exchanges to be processed.

Refunds & Credits

Once we receive and inspect your item(s), we will credit your account. Please allow 5-7 days for a credit to appear on your account. In most cases, we will issue your refund in the same way you made the original purchase.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.