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Identifies all physical buttons, knobs, and connection ports on the device for operation.
Guide on selecting the correct voltage and connecting the source device for initial setup.
Instructions for connecting output devices and fine-tuning gain and volume settings.
Information on controlling the device via the FiiO Control App and driver availability.
Important safety warnings and precautions for proper and safe use of the device.
A list of items expected to be found in the product package for user verification.
Detailed instructions on selecting the correct voltage based on geographical region.
Identifies all physical buttons, knobs, and connection ports on the device for operation.
Guide on selecting the correct voltage and connecting the source device for initial setup.
Instructions for connecting output devices and fine-tuning gain and volume settings.
Information on controlling the device via the FiiO Control App and driver availability.
Important safety warnings and precautions for proper and safe use of the device.
A list of items expected to be found in the product package for user verification.
Detailed instructions on selecting the correct voltage based on geographical region.
The FiiO K9 Pro is a high-performance desktop DAC and amplifier designed to deliver exceptional audio quality for a variety of listening setups. This device serves as a central hub for your audio system, capable of processing digital audio signals and amplifying them for headphones or external speakers. Its robust design and comprehensive set of features make it suitable for audiophiles and professional users seeking a versatile and powerful audio solution.
At its core, the K9 Pro functions as a Digital-to-Analog Converter (DAC) and a headphone amplifier. As a DAC, it takes digital audio signals from various sources (such as a computer via USB, a CD player via coaxial or optical, or a smartphone via Bluetooth) and converts them into analog signals. These analog signals are then fed into the amplifier section, which boosts their power to drive headphones or line-out connections to other audio equipment.
The device offers multiple input options to accommodate a wide range of source devices. For digital inputs, it includes a USB input for connecting to computers, coaxial and optical inputs for other digital audio players, and a Bluetooth antenna port for wireless streaming from compatible devices. This flexibility ensures that you can connect virtually any digital audio source to the K9 Pro.
On the output side, the K9 Pro provides several options for connecting headphones and external amplifiers or active speakers. For headphones, it features a 6.35mm single-ended output, a 4.4mm balanced output, and an XLR4 balanced output. These diverse headphone outputs cater to different types of headphones and user preferences, with balanced outputs generally offering improved signal integrity and power delivery. For connecting to external audio systems, the device includes balanced line-out (XLR) and single-ended line-out (RCA) connections. It also offers balanced (4.4mm) and single-ended (RCA) line-in options, allowing the K9 Pro to function purely as an amplifier for existing analog sources.
A key feature of the K9 Pro is its output selection switch, which allows users to choose between different output modes:
The device also incorporates a gain switch, offering different gain levels (High, Medium, Low) to match the sensitivity of various headphones. This ensures optimal performance and prevents potential damage to headphones or hearing from excessive volume. The volume knob provides precise control over the output level, allowing users to fine-tune their listening experience.
The K9 Pro is designed for ease of use while offering advanced control. Its front panel features a prominent volume knob, input selection button, output selection switch, and gain switch, providing direct access to essential functions. An RGB indicator light is integrated into the design, which serves multiple purposes. In its ON state, the RGB light indicates that the device is actively working. When in the OFF state, it signifies that the device is in sleep mode. Furthermore, the RGB light changes colors to indicate different sampling rates of the audio being played and the specific Bluetooth codecs in use, offering visual feedback on the audio quality and connection status.
A multifunction button on the device provides additional control: a short press mutes or unmutes the audio, while a long press puts the device into standby mode or wakes it up. This allows for quick control over playback without needing to adjust the volume knob.
One of the critical setup steps involves selecting the correct voltage for the device based on your local power supply. The K9 Pro features a voltage switch at the bottom, allowing users to choose between 115V and 230V. This ensures compatibility with different electrical standards worldwide and is crucial for preventing damage to the unit.
Connecting the K9 Pro to various source and output devices is straightforward. Users simply connect their audio source (e.g., computer, smartphone, CD player) to the appropriate input on the K9 Pro and then connect their headphones or external speakers to the desired output. Once connections are established, the input selection button allows users to cycle through the available input sources, while the output selection switch directs the audio to the chosen output mode.
For enhanced control and customization, the K9 Pro can be managed via the FiiO Control App. This application provides a more detailed interface for adjusting settings and accessing features, offering a modern and convenient way to interact with the device.
The K9 Pro offers driver-free operation on Mac OS, simplifying setup for Apple users. For Windows users, a specific driver needs to be downloaded from the FiiO support website to ensure full functionality and optimal performance.
The K9 Pro is built with durability and user safety in mind, though specific maintenance instructions are primarily focused on proper handling and operation rather than routine cleaning or part replacement.
The robust construction and internal design of the K9 Pro are intended to provide long-term reliability. By adhering to the recommended usage and safety guidelines, users can ensure the device maintains its performance and longevity. The focus on professional servicing for any internal issues underscores the complexity of the device's internal components and the importance of expert handling for repairs.
General| DAC Chip | AK4499EQ |
|---|---|
| Amplifier Type | THX AAA 788+ |
| Bluetooth Chip | Qualcomm CSR8675 |
| Bluetooth Version | 5.0 |
| THD+N | <0.0006% |
| Output Impedance | <1Ω |
| Inputs | USB, Optical, Coaxial, Bluetooth |
| Outputs | 4.4mm balanced, 6.35mm, XLR |
| Bluetooth Codecs | SBC, AAC, aptX HD, LDAC |
| Signal-to-Noise Ratio | ≥123dB |
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