professional reviews
the upgraded version of Fosi Audio Q4
Fosi Audio USB DAC Headphone Amp Combo
Input: USB-C/OPT/COA/3.5MM Microphone; Output: RCA/3.5mm Headphone；OPT/COASampling Rate: up to 24bit/192 kHz;
Output power: 1000mw@16Ω, 500mw@32Ω, 300mw@64Ω, 150mw@128Ω, 80mw@300Ω;
THD: <0.003%; S/N: >110db; Frequency response: 20Hz-20kHz；Recommended headphone impedance: 16-300Ω
- 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.
- K5 Pro USB DAC converts USB Type C/Optical/Coaxial signals to 3.5MM AUX and RCA signals with low distortion and great dynamic range. Unique design: 2-in-1 USB Type C interface charging port and audio input means K5 Pro is compatible with your phones(Note: Your audio source must be connected to the USB-A/C port.). RCA output can be connected to an amplifier or powered speakers on your desktop. 3.5 MM AUX and microphone interface can drive 16 Ohm to 300 Ohm headphones.
- K5 Pro headphone DAC adopts the Texas Instruments NE5532 op-amp chip. The circuit design implementing this DAC has been optimized for a low-noise floor and clean sound. K5 Pro has noticeably improved on overall sound quality, so you can get immersed in your music even more easily. Volume button and on button are combined into one, long press to switch on.
- Product Specifications: K5 Pro with master volume/bass/treble control and input mode switch. USB Type C rate: up to 24 bit/96 kHz, Optical/Coaxial sampling rate: up to 24 bit/192 kHz, THD ≤0.003%, SNR ≥110dB. Output power: 1000mw@16Ω, 500mw@32Ω, 300mw@64Ω, 150mw@128Ω, 80mw@300Ω.
- What You Get: K5 Pro DAC amp x1, 3.5MM headphone splitter x1, 2-in-1 USB Type A/C to Type C cable x1, User Manual x1, Optical Cable x1, our worry-free 24-month warranty, and friendly customer service
- Output Power: 1000mw@16Ω, 500mw@32Ω, 300mw@64Ω, 150mw@128Ω, 80mw@300Ω
- Headphone Impedance: 16Ω - 300Ω
- Input Type: USB, Optical, Coaxial, 3.5mm Microphone
- Output Type: 3.5mm Headphone, RCA,
- USB Sampling Rate: 16bit/44.1KHz to 24bit/96KHz
- Optical/Coaxial Sampling Rate: 16bit/44.1KHz to 24bit/192KHz
- THD: ＜0.003%
- SNR: ≥110dB
- Device Dimension: 4.4*3.7*1.2 inch (112*95*30mm)
- Net Weight: 0.55lb (251g)
- Power Input Interface: USB Type-C
- Power Supply: 5V
- Fosi Audio K5 Pro x 1
- USB Type-C cable x 1
- Optical cable x 1
- Headset Microphone Two-in-one Adapter cable x 1
- User’s Manual x 1
H
Works just fine on Linux, plug and play! I'd recommend you guys to add Linux compatibility in the product page, that will attract more costumers
J
I received a defective dac. It was working great for about 4 minutes before it started playing a feedback noise whenever sound was playing through the headphone jack. I tried every troubleshooting step I could think of and emailed fosi support. They had sent detailed troubleshooting steps through my email correspondence, however it became obvious to me that this unit I received was defective as it kept giving feedback noise. We were able to solve the feedback noise from playing by lowering the volume knob on the dac but it started having a consistent popping noise after just a few minutes of usage again (3-5 minutes of audio playing). This popping noise would trigger even earlier the louder the volume knob got and would show up whether i isolated the dac/amp as much as i could or tried different cables and devices. Their support team did issue a refund. I was able to buy another unit (to arrive more quickly) and it has been working just fine. The treble and bass knobs comes in very handy and sounds fantastic.
E
Everything very well, delivered after the indicated date, but I don't take long. Sound quality if increase.
A
Working perfectly, the audio gets much cleaner, greatly increases the bass
N
Arrived ahead of time. Well packed and with a very solid construction. Improved the audio well in comparison with that of the PC. Pushes well the AKG K271 MkII