FiiO K9 Pro Desktop Headphone Amplifier User Guide
- June 5, 2024
- Fiio
Table of Contents
FiiO K9 Pro Desktop Headphone Amplifier
Buttons and Ports Labeled
- XLR4 balanced headphone output
- 6.35mm headphone output
- 4.4mm balanced headphone output
- RGB indicator light
- Volume knob
- Input indicator light
- Output selection switch
- Gain switch
- Input selection button
- Multifunction button
- Power input
- Power switch
- Coaxial input
- USB input
- Optical input
- 4.4mm balanced line-in
- Single-ended line-in
- Single-ended line-out
- Balanced line-out
Notes
- RGB indicator light
- The RGB light in the ON state stands for working while the OFF state stands for sleeping.
- Different RGB light colors stand for different sampling rates and Bluetooth codecs. For more details, please visit our website.
- Output selection switch
- DAC: rear panel line-out, fixed volume
- PRE: rear panel line-out, adjustable volume
- HP: front-panel headphone out, adjustable volume
- Multifunction button
- Short press: mute/unmute
- Long press: stand by/wake up
Operation Explained
Please select the voltage through the voltage switch at the bottom of the device to the corresponding voltage position based on your local voltage.
Connect the source device to the K9 Pro and select the corresponding input source mode.
Connect the K9 Pro to the output device and select the corresponding output mode.
Make adjustments to the gain and volume to suit your preference.
Notes and Precautions
- *For your safety, please avoid using headphones in dangerous environments.
- *Please adjust the volume to a suitable level before wearing headphones so as to protect your hearing
- *Please do not repair or disassemble the device on your own. This device does not include any components that can be self-repaired by users. If there is any breakdown happening to the device, it must be handled by qualified maintenance personnel. If the device is disassembled with the internal circuit reconstructed casually, it will cause trouble for the repair and have a bad effect on the performance and quality of the device.
- The device shall not be subject to water droplets or splashes. Please do not place any containers with liquids inside on the device, such as a vase. please do not put any naked fire sources near the device, such as a lit candle.
- *The device should be connected to an electrical outlet with grounding protection.
- Make sure the power button can be operated in a convenient manner.
List of items Included in the Package (Please check if all the items are included)
- K9 Pro
- Headphone jack adapter
- USB cable
- Warranty card
- instruction card for voltage selection
- Power cable
- Quick start guide
WEEE Directive & Product Disposal
At the end of its serviceable life, this product should not be handed as household or general waste. It should be handed over to the applicable collection point for the recycling of electrical and electronic equipment or returned to the supplier for disposal.
Internal/Supplied Batteries
-
This symbol on the battery indicates that the battery is to be collected separately. This battery is designed for separate collection at an appropriate
collection point. -
Qualcomm is a trademark of Qualcomm Incorporated, registered in the United States and other countries. aptx is a trademark of Qualcomm Technologies International Ltd., registered in the United States and other countries. Qualcomm antXHD
FCC NOTICE
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation, This e used in accordance with the instructions may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is conn
- Consult the dealer or an experienced radio/TV technician for help.
The equipment complies with FLC radiation exposure limits set forth Tor an uncontrolled environment. Ine equipment should De installed and operated with a minimum distance of 20 cm between the radiator & your body.
FCC STATEMENT
- This device complies with Part 15 of the FCC Rules.
- Operation is subject to the following two conditions:
- This device may not cause harmful interference, and
- This device must accept any interference received, including interference that may cause undesired operation.
- Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.