FiiO K9 Pro Flagship Desktop DAC Amplifier AK4499/THX-AAA 788+/Support 384 kHz/Native DSD256/MQA decoding/LDAC/AptX Adaptive/AptX HD

$ 699.99

FiiO unveils with its K9 Pro an excellent DAC and headphone amplifier combo, using exclusively high-end audio components, renowned for their sonic performance, within a very precise assembly. The K9 Pro features a high-end AK4499 DAC, two THX-AAA 788+ amplifiers, a dual femtosecond clock, a QCC5124 Bluetooth receiver, an optimized power supply with fully balanced audio circuits.

The K9 Pro is equipped with the legendary AKM AK4499 DAC, renowned in the audiophile world for its excellent performance and decoding capabilities. It supports high-resolution audio streams up to PCM 32bit 384kHz and DSD256 and contributes greatly to the richness and precision of the K9 Pro's sound.

The THX-AAA 788+ amplifiers used in the K9 Pro provide detailed and dynamic sound with both high and low impedance headphones. The K9 Pro can produce up to 46Vpp of transients when driving high-impedance loads, and up to 2W without distortion when driving low-impedance loads. Compared to the previous model, the output power of the K9 Pro has increased by more than 50% with better heat dissipation efficiency.

Box Contains

    FiiO K9 Pro Flagship Desktop DAC Amplifier AK4499/THX-AAA 788+/Support 384 kHz/native DSD256/MQA decoding/LDAC/aptX adaptive/aptX HD
  • Limited 1-Year Warranty for the Mainframe
  • 180-Day Warranty on Battery

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.