FIIO K7 from Authorized Domestic FIIO Small Stationary Headphone Amplifier with USB DAC Dual Configuration [Ships Store] Built-in THX-AAA 788+

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.

[About clocks that synchronize time via radio waves] The function of clocks that synchronize time via radio waves only works in the Japanese area. Please be careful. Equipped with Asahi Kasei Microdevices' latest DAC chip "AK4493SEQ" in dual configuration: The K7 is equipped with the latest DAC chip "AK4493SEQ" by Asahi Kasei Microdevices (AKM), which redesigned the previous model "AK4493EQ" with current high-quality sound technology. '' is used in a dual configuration with one unit each for the left and right channels. The AK4493SEQ, designed based on advanced VELVET SOUND technology, pursues a rich amount of information, a sense of speed, and realistic spatial expression while effectively reducing power consumption by optimizing impedance. In addition, by reviewing the noise design, we have greatly improved the audible noise sensation compared to catalog specs. It achieves excellent analog characteristics with a maximum S/N ratio of 128dB and THD+N of -115dB. Adopts a fully balanced design from DAC to headphone amplifier section: The K7's audio circuit is designed based on the same architecture as the top model K9 Pro ESS, and includes a DAC, low-pass filter, volume control, buffer amplifier, and preamp. It is a fully balanced circuit consisting of 6 blocks: , headphone amplifier. By thoroughly inputting differential signals to each block divided into left and right channels, mutual interference that adversely affects sound quality is eliminated to the utmost, enabling high-dimensional music playback that is more faithful to the signal. Equipped with two "THX-AAA 788+" headphone amplifier circuits jointly developed by FiiO and THX: The K7 uses the same "THX-AAA 788+" amplifier circuit as FiiO's top-of-the-line stationary headphone amplifier model, the K9 Pro ESS. It is equipped. This circuit is an amplifier circuit jointly developed by FiiO and THX based on the ``THX-AAA 788'' circuit to provide ideal detail and dynamics for all headphone playback, from high efficiency to low efficiency. The K7 has a fully balanced configuration and is equipped with two units, one for each left and right channel, achieving high output of up to 2000mW when loaded with 32Ω and up to 560mW when loaded with 300Ω. Adopts XMOS's "XUF208" and supports PCM 384kHz/32bit and DSD256 playback: The K7 uses XMOS's "XUF208" as the USB decoding chip. Equipped with this chip, it has the decoding ability of PCM up to 384kHz/32bit, DSD up to DSD256 (Native), DSD128 (DoP), and the dual clock management technology always provides the optimal clock for the input source. By selecting it, you can perform high-quality D/A conversion. Adopts a clean independent power supply circuit design: The K7 uses a power supply circuit design that supplies independent power to each block of the circuit to suppress power supply noise that negatively affects sound quality. The power supplied from the external 12V switching power supply is kept clean by low-noise LDOs in charge of each block, adjusted to the appropriate amount, and then delivered to the components. ADC volume control function that enables fine volume adjustment: K7 uses ADC volume control function for volume adjustment. Unlike the analog volume method, which directly operates the variable resistor through which the music signal is applied, this method adjusts the volume by controlling the volume IC based on the AD-converted value of the amount of rotational change of the volume knob. While eliminating the problems with analog volume, such as left and right volume differences and noise, it is now possible to finely adjust the volume in 112 levels. Equipped with a 2-step hardware gain adjustment function: The K7's hardware gain can be adjusted from 2 steps: High and Low by operating the GAIN switch on the front of the main unit. By adjusting the gain according to the efficiency of the connected headphones, you can always enjoy music at a comfortable volume level. Equipped with a variety of inputs and outputs, the K7 can be used as the center of your audio system: The K7 has digital inputs using USB terminals, RCA coaxial terminals, and square optical terminals, analog inputs and outputs using RCA terminals, and a 6.35mm headphone terminal. It supports single-ended output using 4.4mm terminal and balanced output using 4.4mm terminal. Not only can it be connected to a PC, but it can also be connected to various digital devices to enjoy music with high-quality balanced connections, and can be easily integrated into the audio system you already own. Switch each input by operating the INPUT button on the front. When you press the button, the indicator lights up colorfully to show that the input has been switched. You can switch between three output modes by operating the OUTPUT switch. In addition to enjoying music with headphones, you can select the appropriate output mode when connecting to active speakers or connecting to an external amplifier as a pure DAC. Equipped with an RGB indicator light that combines functionality and design: The K7's RGB indicator light has evolved further from the K5 Pro ESS, making it possible to display not only a single color but also a mixture of multiple colors. The K7's unique and bright colors shine as it turns on/off and switches inputs, making it a visually eye-catching presence on your desk. Refined and simple housing design: The K7 housing is carefully assembled using CNC-machined parts made of highly rigid aluminum alloy. The height is 55mm and the width is less than 1/3 of A4 size, making it compact and easy to install on your desk. In addition, the simple and modern design blends naturally into your interior. The K7 is a compact stationary USB DAC/headphone amplifier that is the same size as the K5 Pro ESS, but it is equipped with AKM's latest DAC chip "AK4493SEQ" in a dual configuration that operates one for each left and right channel, and the audio circuit is top of the line. Adopts the same perfectly balanced design as the model K9 Pro ESS. This is the latest model that supports balanced headphone connections, which has been requested by many users. By adopting the same "THX-AAA 788+" technology as the K9 Pro ESS for the headphone amplifier circuit, it accurately depicts the musical details contained in the signal without compromising it, while also delivering maximum performance from a compact housing. Demonstrates an amazing drive power of 2000mW.