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【MAKE A BIG DIFFERENCE IN SMALL SIZE】 GO link Max is the ultimate portable solution for both beginners seeking abundance of high resolution music and audio enthusiasts looking for simplicity and performance on the go. Featuring a new addition of 4.4mm balanced output and superior design, the plug-and-play ease and exceptional audio quality make it the perfect choice for any music enthusiast

【Balanced Circuit for Clear Sound Quality】GO link Max is the smallest and portable balanced DAC of iFi products, with balanced circuits that extend interference reduction throughout the audio system. With S-Balanced technology and 4.4mm balanced circuitry to enhance the sound quality by enhancing 3.5mm single end and delivering crystal clear resolution and channel isolation for any headphone and ready for future audio equipment upgrades

[Not just minimalism and lightweight. We have been looking for an upgrade: Go link Max is a balanced DAC that pursues minimal size and lightweight. It features a circuit design that eliminates noise interference throughout the audio system, while S-Balanced technology enhances 3.5mm output and 4.4mm balanced output for clear sound resolution and channel separation. It also supports future audio equipment upgrades

(Original headphones that draws out up to 241 mW): Most modern portable devices representing smart phones have no headphone terminal and can only obtain limited output via adapter. Go link Max solves this problem with a new balance output of up to 241mW. It outperforms common laptop headphone output. This high output is not only amplified volume, but also brings out the original capabilities of the headphones and increases the fine details and resolution for a better listening experience

(It expresses the loud and small sounds. ESS Technology "Sabre DAC" and iFi Technology】 ESS technology provides "Dynamic Range Enhancement (DRE)" function for increased contrast from louder to smallest sound. In addition, when combined with iFi's proprietary technology, it provides a dynamic range of +6 dB which doubles the sensory difference of high and low range. Lively reproduces every detail of the music

The guitar is there. Piano is there: Equipped with dual "ESS ES9219" Sabre DAC chips, one on each left and right channel, each instrument can realize where and where it is sound, providing a lively sound stage. Adding iFi technology to them eliminates jitters and distortions and creates a crystal clear sound field. We will give you a happy experience that will forget the time with "one more song, another song"

(Volume control on device body without damaging high resolution sound source) It uses volume control on the device itself. Adjust the volume at the device side, the changes are reflected directly within the DAC chip. This allows you to maximize the detail and abundance of a high-resolution sound source at any volume level

【For All Music Formats】 It allows high resolution playback of all music formats from MP3 to DSD256, PCM384, DXD384

LDAC CODEC COMPATIBLE - High quality wireless sound BTR11 is the first Bluetooth receiver to support LDAC codec and have received high resolution audio certification. Equipped with "BES2700" Bluetooth chip, Bluetooth 5.3, dual core CPU stable performance, and dual core NPU for enhanced sound processing

Equipped with a separate headphone amplifier to deliver up to 45 mW output. Equipped with a high performance independent headphone amplifier, and a low resistance design allows for a maximum of 45 mW. Drive a variety of earphones comfortably and provide wireless audio quality

Multi-point support that can be connected to two devices simultaneously. Support multi-point function that can connect two Bluetooth devices simultaneously. It allows you to use multiple devices comfortably. When the BTR11 is turned on, the second device requires manual reconnection."

Built-in microphone for phone calls Noise reduction for clear calls Built-in high-sensitivity omnidirectional microphone, combined with the call noise reduction function for clear and clear calls

Intelligent partner for a variety of scenarios; Convenient size for travel; Easy to carry and use with confidence when going out; Supports work time: Provides a BGM environment for work; Relaxation: Enjoy resting time while staying comfortable at rest; Private theater: Allows you to enjoy nighttime listening without worrying about the surroundings; Wireless sound: You can use the active speaker as a Bluetooth speaker; In-car audio: High-resolution Bluetooth to make music in your car sound quality with your car

2-color LED indicators for increased visibility. Red and blue LEDs provide easy viewing of information such as power status, pairing, charging status, and Bluetooth codec

Long-lasting battery performance Built-in battery for up to 15 hours of continuous playtime. Even if the battery is low, it will charge up to about 90% in one hour. Can be charged via USB Type-C port

Compact and portable design: Weighs 0.5 oz (13 g), and is 2.2 inches (55 mm) long. Back clip and strap hole allow for a variety of carrying styles

Looks attractive from every angle Body features multiple silk screen printed for a sophisticated polished finish. The luxurious texture and stylish dual color design of black and white gives you an attractive look and feel from every angle

Multi-function Buttons for Easy Operation: Multi-function buttons can power on/off, play/pause, reconnect, pairing, call control, and activate voice assistant

[Combines Voice Communication and Game Audio] MixAmp Pro TR allows you to easily adjust the mix of and switch between voice chat and game audio.Have more fun with various titles where in-game chat is important.

[More Differential] You can choose 4 presets for the mode that suits your content.It can be used not only for gaming, but also for listening to music.(Customization is also available).

[Digital Daisy Chain] When used in competitions, the faster than the speed of sound fully digital connection allows for local voice communication without interference or delays.

[Advanced Compatibility] Astro products are compatible with Logicool G wired headsets.

[Package Contents] Main Unit, Micro-USB Cable 9.8 ft (3m), TOSLink Cable 9.8 ft (3m), Quick Start Guide, Daisy Chain Cable 19.7 inches (0.5m), PC Headset Y-Adapter, Quick Start Guide, Important Information Document (Documentation: English language not guaranteed) [Connection I/F] Optical Digital Port.

Compatible Systems: PS4, PC/MAC, Nitendo Switch.

[Accessories] TOSlink Optical Cable 9.8 ft (3m), Micro USB Cable 9.8 ft (3m), Daisy Chain Cable 19.7 inches (0.5m), PC Headset Adapter, Quick Start Guide (English language not guaranteed).

PC/MAC compatible.

Amplifier: | Frequency Response: 20Hz - 24KHz | Distortion Rate (THD): THD < 0.1% | Compatible Systems: PS4 (Note 1), PC/MAC, Nintendo Switch (Note 2), ASTRO COMMAND CENTER.

Uses Cirrus Logic CS43198 DAC chip for 384 kHz/32 bit and DSD256 playback: The K11 uses the Cirrus Logic's DAC chip "CS43198", which has low power consumption and excellent audio characteristics. The CS43198 is a Master HIFI DAC that achieves the strictest standards of the company to provide true recording. By adopting this chip, it achieves a performance of S/N ratio: over 123dB and THD+N:0.00035%

(1,400 mW output with a fully balanced headphone amplifier circuit) In K11, the fully balanced configuration of the headphone amplifier circuit, and a total of 2 units per left and right channel, the balance output is 1,400 mW at 32 Ω load and 250 mW. In addition, to suppress the power supply circuit design that adversely affects sound quality, each block of the circuit, it uses a power supply circuit design. Power supplied from a 12V external power supply is maintained clean by a low-noise LDO responsible for each block, each is adjusted to the proper amount and is supplied to the components

(3-stage gain control supports a wide range of playback environments from IMM to headphones) The K11 can be adjusted from 3 levels of gains (High), Mid, and Low. You can adjust the gain according to the efficiency of the headphones and headphones to enjoy music at a comfortable volume level

(Various Inputs and Outputs, Can be Used in the Center of Audio System) The K11 supports digital inputs using USB terminals, RCA coaxial terminals, square optical terminals, analog output using RCA terminals, and balanced output using single end output using 6.35 mm headphone terminals and 0.2 inch (4.4 mm) terminals. Not only is it connected to your PC, you can connect it with a variety of digital devices to enjoy music with a high-quality balanced connection or easily incorporate it into your existing audio system

(An intuitive change of the function of the main unit by the display and knob on the front) In K11, the FIIO fixed headphone amplifier has been adopted a display on the front. High contrast, durable VA display provides good visibility and stays lit without burning Visually check the sampling rate, volume, gain and output mode. It is used to turn the power on/off, switch each input, control menus, adjust volume, and other operations. Push the knob twice quickly to select the headphone output/RCA output, and each output can remember the last volume. You can choose the right output mode for each connection to an active speaker or connect to an external amplifier as a pure DAC

RGB indicator light on top of the main logo: The FIlO logo on the top of the K11 body is illuminated by RGB lighting, allowing you to quickly identify your current audio sampling rate. Brightness, color, and light patterns are all adjustable by knobs

(Sleek and simple housing design and black and silver 2 colors) The K11 is assembled with high strength aluminum alloy material carefully processed. The height is about 1.3 inches (32 mm) and the width is 5.6 inches (143 mm) so it can be installed neatly on a desk. Black and silver two colors, you can choose according to your preference

(Presets available for use on game consoles) Even with a PS5 or Switch that cannot be used with Sonar, you can choose the perfect preset for various games (currently 14 titles), such as Apex Legengs, Fornite, etc. With SteelSeries headsets, you can experience better sound settings

【SteelSeries Headsets Optimized Sound Settings】The GameDAC Gen2 main unit preset is created using SteelSeries headsets. With a wide range, unobtrusive flat sound SteelSeries headset, you'll experience more optimal sound settings

High resolution sound with the highest quality DAC: Adopts the new ESS SabreQuad-DAC. High Resolution Audio Certified 96KHz/24-bit audio resolution is possible to produce 78% pure sound compared to GameDAC Gen 1

【Sound Customization Makes Your Game Better】The equalizer can be adjusted with 10 bands from bass to treble. The sound you want to hear from other player's footsteps and firearms will be clearer for a blast performance

(Complete Input and Output Ports) Equipped with 2 USB-C input ports, you can easily switch between your PC and PlayStation and other devices. It also features a 3.5mm jack output that can be used with various headsets and earphones. In addition, it has a 3.5mm jack input port (line-in), so you can connect your smartphone to voice chat

Specially customized core design for ultra-precision math processing

4,000 mW of high output power. Full Discrete AB Grade Headphone Amplifier

Equipped with AKM's "AK4191EQ + AK4499EX x 2" flagship separate DAC system to reduce background noise

Equipped with 31 bands high precision lossless PEQ function to achieve the equalizer settings for convincing

Versatile operation modes for connecting any media

A perfectly balanced design from the DAC part to the amplifier part

Fully isolated internal power supply, digital and analog circuit board

Precision Power Design

Equipped with 3 ACCUSILICON FEM Clocks to accurately restore audio signals

High end parts with no compromises in detail

This product has been updated in November 2022 with a significant evolution of components, wiring and circuitry, and greatly improved sound with low distortion, high S/N ratio (MAX 113dB)

Latest Q4 Bluetooth Receiver and D/A Converter:Bluetooth / PC-USB / USB Memory/Optical and Coaxial S/PDIF multiple input methods can connect to most home audio systems. Streambit perfect 24Bit / 192KHz HD low jitter signal and has output protection circuit

PC-USB/USB Input and Dual Analog Output:In addition to PC-USB (also support smart phone OTG ), it also has USB memory to play lossless audio format, easy to set up, no driver or software required. RCA output can be connected to an amplifier or active speaker. With the addition of a headphone amplifier circuit, you can easily drive most 16-300Ω headphones

HIFI CLEAR SOUND WITH TONE CONTROL: Adopts a combination of high-end chips, high quality sound with high S/N ratio and low distortion (0.005%) It can also be used as a preamp to adjust your favorite sound style with treble and bass knobs

Practical functions to simplify use: Full function remote control allows you to set all settings from a distance. It has a coding input selection button and independent input indicator to show your work status clearly in real time. Unique mirror design aluminum alloy case looks very cool

Advanced wireless performance with QCC5181 support lossless audio: Equipped with Qualcomm "QCC5181" Bluetooth platform, supporting LE Audio standard. 2.1Mbps transmission capability allows lossless transmission in aptX Lossless codec, and offers CD-grade lossless sound wirelessly. The BTR17 also supports the latest Bluetooth 5.4 in the industry. Includes major high quality audio codec, including LDAC, aptX Adaptive (96kHz/24bit), aptX Low Latency. Combined with Snapdragon Sound technology for a high quality Bluetooth audio experience. BTR17 also has "High Resolution Audio Certification". Maximum bit rate for supported codec: aptX Lossless: 1200 kbps LDAC: 990 kbps aptX HD: 576 kbps aptX Adaptive: 420 kbps AAC: 328 kbps

External independent power connection port for safe and efficient power supply: Equipped with dedicated desktop mode (D.Mode) Connects to your smartphone via an external independent power connection port for safe and efficient power supply

3 Modes boasting versatile connectivity and optimal power supply: USB controlled with XMOS flagship XU316. Compared with the common USB chip, it provides lower latency, more stable transmission, and better compatibility. Supports 768kHz/32bit DSD512 hardware decoding, MQA full decoding Combined with dual clock circuitry for optimized stable operation of all sound sources and sampling rates. In addition, we utilize the computing ability of the XU316 to achieve high precision PEQ (parametric equalizer) that supports PCM up to 192 kHz sampling rate. Allows for better sound tuning for maximum chip performance

Equipped with 10-band high definition lossless PEQ that allows detailed sound quality adjustment: Equipped with a high precision lossless PEQ (parametric EQ) that allows you to adjust the sound quality in 10-band frequency bands. Supports desktop and FIIO control app, the preset saving, import/export function allows detailed sound quality adjustment. PEQ function can only be used when PCM playback

Dual "ES9069Q" DAC for high-quality sound quality reproduction: Equipped with a dual configuration of the latest ESS ES9069Q" DAC. HyperStream technology combines high performance and low power consumption. Excellent DNR 130dB and THD+N -120dB

Powerful output and superior sound quality with "THX AAA 78+" amplifier: Equipped with 4 independent left and right circuits for a total of 8 channels. Advanced distortion correction technology provides low distortion and superior sound quality even at high output. When you activate the desktop mode (D.Mode) via USB power supply from the POWER IN terminal, it achieves a high output of 650 mW. It has approximately twice the output output power output compared to the BTR7, allowing for more powerful sound expression

High-End Equivalent Signal Processing: Integrated signal processing equivalent to high-end HiFi player in a compact body. High precision digital conversion, LPF (low pass filter) processing and multi-stage analog signal processing deliver professional sound quality that faithfully reproduces every detail of the music

High sound quality, low noise, low distortion power supply design; 3-stage precision power supply design that supports high sound quality; Protective circuit: Protects device from overvoltage and reverse connection; Voltage conversion: Efficient voltage conversion via DC-DC converter; Voltage stabilization: High precision LDO regulator; Realizes independent power supply that connects directly to sound quality; Digital signal processing part; Digital-analog converter part; Analog amplifier part; 8. Independent audio Power Path: High precision thin film resistance to facilitate stable power flow

7.1 surround sound and a DAC equipped mix amplifier with separate mixing of game audio and chat voice

External DAC equipped amplifier enhances gaming audio

Good compatibility with PC plug and play. No drivers or software required. Hardware features are readily accessible

High performance microphone input Upgraded 16-bit/48KHz sound path for warm and clear microphone audio

Adjust reverb for audio personalization Set reverberation levels for accurate spatial awareness needs

Side Tone Adjust the volume of your voice you can hear from the headset

Quick switch from headset to speaker Select headset mode or dedicated speaker line output touchscreen

Setting Lock Lock the settings to prevent accidental switching between important games

Directional sound You can switch to forward or rear speakers depending on the sound you want to emphasize in the game

The upgraded version of Fosi Audio Q4 adds microphone function, K5 Pro headphone DAC amp combo, next-generation audio converter with unrivaled internals, more outstanding performance, and richer audio details. Born for Gaming. K5 Pro stereo DAC headphone amplifier is perfect for your home gaming system, equivalent to an external sound card, suitable for PS5/Computers/PC/MAC/active speakers, etc.