---
product_id: 515357890
title: "K5 Pro DAC Amp Headphone Amplifier, Mini Hifi Stereo Digital-to-Analog Converter, USB Type-C/Coaxial/Optical to 3.5MM AUX/RCA Jack, for Gaming PS5/ PC/Active Speakers Up to 24 bit/192 kHz"
brand: "fosi audio"
price: "₩330833"
currency: KRW
in_stock: true
reviews_count: 8
category: "Fosi Audio"
url: https://www.desertcart.kr/products/515357890-k5-pro-dac-amp-headphone-amplifier-mini-hifi-stereo-digital
store_origin: KR
region: South Korea
---

# Supports 16-300Ω headphones 1000mW max output power USB-C/Optical/Coaxial multi-input K5 Pro DAC Amp Headphone Amplifier, Mini Hifi Stereo Digital-to-Analog Converter, USB Type-C/Coaxial/Optical to 3.5MM AUX/RCA Jack, for Gaming PS5/ PC/Active Speakers Up to 24 bit/192 kHz

**Brand:** fosi audio
**Price:** ₩330833
**Availability:** ✅ In Stock

## Summary

> 🎮 Level up your sound game with Fosi K5 Pro — hear every detail, own every moment!

## Quick Answers

- **What is this?** K5 Pro DAC Amp Headphone Amplifier, Mini Hifi Stereo Digital-to-Analog Converter, USB Type-C/Coaxial/Optical to 3.5MM AUX/RCA Jack, for Gaming PS5/ PC/Active Speakers Up to 24 bit/192 kHz by fosi audio
- **How much does it cost?** ₩330833 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/515357890-k5-pro-dac-amp-headphone-amplifier-mini-hifi-stereo-digital)

## Best For

- fosi audio enthusiasts

## Why This Product

- Trusted fosi audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Stylish:** Sleek gunmetal grey design fits perfectly on any desk or gaming setup.
- • **Immersive Gaming Audio:** Next-gen TI NE5532 DAC chip delivers pinpoint positional sound for FPS dominance.
- • **Plug & Play Simplicity:** No drivers needed—just connect and elevate your audio experience instantly.
- • **Universal Connectivity:** Seamlessly switch between USB-C, optical, and coaxial inputs for all your devices.
- • **Powerful Headphone Drive:** Amplifies headphones from 16Ω up to 300Ω with ultra-low distortion and crystal clarity.

## Overview

The Fosi Audio K5 Pro is a premium mini HiFi DAC headphone amplifier designed for gamers and audiophiles alike. Featuring a Texas Instruments NE5532 op-amp chip, it supports high-resolution audio up to 24bit/192kHz via USB-C, optical, and coaxial inputs. It powers headphones ranging from 16 to 300 ohms with up to 1000mW output, ensuring rich, distortion-free sound. Its compact, stylish design includes bass and treble controls, microphone input, and RCA output, making it a versatile centerpiece for any desktop audio or gaming setup.

## Description

Product Description Fosi Audio K5 Pro Stereo Gaming DAC Headphone Amplifier The K5 Pro has a high-performance audio circuit designed by the Fosi Audio innovation product R&D team, allowing you to take advantage of digital audio with USB C/optical/coaxial inputs, convenient for connecting various digital interfactes, compatible with PS5/Computers, etc. Fosi Audio K5 pro the upgraded version of Fosi Audio Q4 Fosi Audio USB DAC Headphone Amp Combo Input: USB-C/OPT/COA/3.5MM Microphone(USB Mode); Output: RCA/3.5mm Headphone OPT/COA Sampling Rate: up to 24bit/192 kHz; USB Sampling Rate:up to 24bit/96 kHz Output power: 300mw@32Ω THD: <0.005%; S/N: 96dB; Frequency response: 20Hz-20kHz Recommended headphone impedance: 16-300Ω, it is recommended to use low impedance headphones (16-64Ω) to high-impedance headset Stereo DAC Headphone Amplifier K5 Pro can drive 16 Ohm to 300 Ohm headphones with low distortion and great dynamic range. outstanding performance Exclusive Design with Independent Mic Input Improve interactivity, can be used for game connections and phone calls rich and delicate sound Gaming Starts Here When using a USB cable, please ensure its OTG functionality is working properly. practical and usefull NEW DAC Headphone Amp Position the decoder headphone amplifier away from other electronic devices to avoid noise. elegant grey exterior Desktop DAC and Headphone Amplifier The knobs are high quality and turn very smoothly, they’re quite enjoyable to use. works with PS5 USB audio Mini Stereo Gaming DAC Great Value Headphone AMP/DAC with Bass/Treble Control easy to install Plug-n-play, No Driver Needed If you have RCA speakers and want to connect them to a computer, get this device! RCA ouput Great sound quality Next-generation DAC for unrivalled performance, make your music sound great at home on your desk. Common Problems and Troubleshooting 1. Not Working Please select the correct input mode for the K5 Pro, ensuring the text displayed when the blue indicator light illuminates matches your audio source. When connecting to a television, set the television's audio output to PCM mode, disable any additional audio effects (such as Dolby or DTS), and select ‘Fosi Audio Digital Output’ as the audio output device. Attempt connecting the device directly to a laptop rather than via a hub; ensure the USB Type-C connector is correctly aligned with the audio source's port. Replace the USB cable to test whether the OTG function is operating correctly. For some devices that may not output enough power to drive the DAC properly, you can try using an additional USB splitter cables for power supply. 2. Only one channel output Make sure all cables are firmly connected, try changing the USB OTG cable. For RCA/AUX output: cross-check the left and right channel speakers and input cable. For headphone output: make sure the headphone plug is fully inserted. Try using different headphones with stereo plugs and 3.5mm cable. In addition, try other input modes to see if the problem persists, and connect to other audio sources to ensure that they output stereo rather than mono. 3. Incompatible headset microphone Confirm that the headset supports the microphone function and enable microphone permissions in the computer's settings (go to "Settings-Microphone-Allow access to your microphone"). In the computer's sound settings, set the "Recording" device to "Fosi Audio K5 PRO". In the input tab in the sound settings, select "Test your microphone" to confirm that the microphone is working properly. In addition, it is recommended to try using a USB power/data cable with OTG function to test different USB ports and headsets. It is recommended to clean the computer port because plug interference may cause partial loss of function. Check the microphone/headphone adapter cable and make sure the volume is turned up. 4. There is noise Check if the noise disappears at lower volumes. Test for interference from nearby devices and use a well-shielded USB OTG cable, avoiding those that run near A/C power cables. Experiment with different input modes (RCA/OPT/COA) to see if the issue persists. If you use a computer, ensure computers and other electrical appliances are not plugged into the same power strip; try using a different one. Consider using a ferrite bead on the power cable and avoid powered external USB hubs. For headphone output noise, try a 3.5mm ground loop isolator and use higher impedance headphones. Place the device in a dry, well-ventilated location. Product Comparison K5 PRO Q4 SK01 SK02 DS1 DS2 PH05

Review: The perfect portable headphone amp - As a daily driver of the Fosi Q4 DAC (in combination with the BT30D amp) for my computer, and a BT20D for the bedroom it's safe to say I like Fosi gear. The K5 Pro is a fantastic upgrade and replacement for the Q4 in several aspects. 1. Build quality and design: the new design of Fosi products has made the old black boxes look more sleek and modern. The gunmetal grey is stylish and works with any mini hifi setup or room. It just so happens to match the metal in my headphones and stand. 2. Connectivity: the Q4 used a 5v micro usb for power, then a full-size usb type B to connect to a pc (the optical and coaxial are the same on both models). With the K5, one usb c is used for both power and signal. What impressed me is the lack of interference when using the same cable for both. Initially I was skeptical of this (without cutting the cable to see) but I can assume that there is a good degree of shielding of the individual cores to prevent any interference or cross talk. In addition the K5 Pro has added a 3.5mm microphone input next to the 3.5mm headphone output. This output can power headphones from 16 ohm to 300 ohm. This is a 100ohm improvement over the Q4 and as I have a pair of HD660s it makes a lot of difference. Just like the Q4 there is a RCA output to connect to speakers or a seperate amp unit. 3. The DAC chip: the K5 Pro uses the new Texas Instruments NE5532 op-amp chip. Especially noticeable through headphones there is precise and punchy bass control and incredibly clear highs while never muddling the mids. 4. Gaming: both the K5 and Q4 are advertised as gaming DACs. The K5 really improves over the Q4 because of the NE5532 chip. Using Dolby Atmos for headphones the positioning and soundstage was perfect for FPS gaming and immersion. I have only one gripe about the K5 Pro. It's the power button. To turn on and off you have to long press the volume knob. This means every time the K5 loses power you have to turn it back on manually. The Q4 had a point on the volume where as you turn the volume up the DAC turns on. Once left at a volume the Q4 just turns on and off without having to touch it. It is all down to my laziness but the quick press of the volume to change the input is a very nice to have. In summary the K5 is a clear upgrade over my Q4. Comparing my review to others they are saying similar things. If you just want something that sounds great and incredibly portable to power your headphones or to connect to your active speakers the K5 is a no brainer for the price. If you want the best of both worlds by using a pair of headphones and passive speakers like me the price is a steal and leaves plenty of budget for an amp.
Review: Simple and effective- A great audio upgrade - Arrived today, setup was incredibly easy was listening to superb sound quality within minutes! Box feels solid and dials have a nice stiffness with a very subtle tactile top centre mark. Lovely LED on the front is incredibly bright- enough to distract while gaming- I use an old slot cover to block it...

## Features

- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BFHFSX4C |
| Audio Input | USB, Optical, Coaxial |
| Best Sellers Rank | 14 in Headphone Amplifiers |
| Brand Name | Fosi Audio |
| Compatible Devices | Active Speaker, Gaming Console, Headphone, Personal Computer, Smartphone |
| Connectivity Technology | USB, Optical, Coaxial |
| Country of Origin | China |
| Customer Reviews | 4.1 out of 5 stars 1,374 Reviews |
| Frequency Response | 20 Hz |
| Global Trade Identification Number | 00761736133713 |
| Included Components | 3.5MM headphone splitter, 2-in-1 Type C cable, User Manual, Optical Cable |
| Item Weight | 425 Grams |
| Item height | 1.2 inches |
| Manufacturer | Fosi Audio |
| Maximum Sample Rate | 192 KHz |
| Number of Channels | 2 |
| Operating System | Linux, Windows, macOS |
| Supported Software | Supports standard DAW software and plug-ins |
| UPC | 761736133713 |

## Product Details

- **Brand:** Fosi Audio
- **Compatible devices:** Active Speaker, Gaming Console, Headphone, Personal Computer, Smartphone
- **Supported software:** Supports standard DAW software and plug-ins
- **Connectivity technology:** USB, Optical, Coaxial
- **Number of channels:** 2

## Images

![K5 Pro DAC Amp Headphone Amplifier, Mini Hifi Stereo Digital-to-Analog Converter, USB Type-C/Coaxial/Optical to 3.5MM AUX/RCA Jack, for Gaming PS5/ PC/Active Speakers Up to 24 bit/192 kHz - Image 1](https://m.media-amazon.com/images/I/51xbHqufDSL.jpg)

## Questions & Answers

**Q: Is the K5 Pro driverless on Windows 7?**
A: Yes, it is driverless.

**Q: What’s the sample rate of USB/Optical/Coaxial?**
A: USB supports up to 24-bit 96 KHz, while Optical and Coaxial support up to 24-bit 192 KHz.

**Q: My K5 Pro won't turn on with my iPhone 14.**
A: Ensure you are using a USB-C to Lightning OTG cable. For devices that may not output enough power, try using an additional USB splitter cable for power supply.

**Q: Unable to Power On.**
A: To power on the device, press and hold the volume button for a longer time.

**Q: How to use K5 PRO with PS5?**
A: Plug headset into K5 Pro via 3.5mm splitter. Go to PS5 Settings > Sound > Audio Output, select Output Device > Fosi Audio K5PRO. Adjust mic level to optimal range. Ensure PS5 output/input set to Fosi Audio K5PRO.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The perfect portable headphone amp
*by J***E on 13 June 2023*

As a daily driver of the Fosi Q4 DAC (in combination with the BT30D amp) for my computer, and a BT20D for the bedroom it's safe to say I like Fosi gear. The K5 Pro is a fantastic upgrade and replacement for the Q4 in several aspects. 1. Build quality and design: the new design of Fosi products has made the old black boxes look more sleek and modern. The gunmetal grey is stylish and works with any mini hifi setup or room. It just so happens to match the metal in my headphones and stand. 2. Connectivity: the Q4 used a 5v micro usb for power, then a full-size usb type B to connect to a pc (the optical and coaxial are the same on both models). With the K5, one usb c is used for both power and signal. What impressed me is the lack of interference when using the same cable for both. Initially I was skeptical of this (without cutting the cable to see) but I can assume that there is a good degree of shielding of the individual cores to prevent any interference or cross talk. In addition the K5 Pro has added a 3.5mm microphone input next to the 3.5mm headphone output. This output can power headphones from 16 ohm to 300 ohm. This is a 100ohm improvement over the Q4 and as I have a pair of HD660s it makes a lot of difference. Just like the Q4 there is a RCA output to connect to speakers or a seperate amp unit. 3. The DAC chip: the K5 Pro uses the new Texas Instruments NE5532 op-amp chip. Especially noticeable through headphones there is precise and punchy bass control and incredibly clear highs while never muddling the mids. 4. Gaming: both the K5 and Q4 are advertised as gaming DACs. The K5 really improves over the Q4 because of the NE5532 chip. Using Dolby Atmos for headphones the positioning and soundstage was perfect for FPS gaming and immersion. I have only one gripe about the K5 Pro. It's the power button. To turn on and off you have to long press the volume knob. This means every time the K5 loses power you have to turn it back on manually. The Q4 had a point on the volume where as you turn the volume up the DAC turns on. Once left at a volume the Q4 just turns on and off without having to touch it. It is all down to my laziness but the quick press of the volume to change the input is a very nice to have. In summary the K5 is a clear upgrade over my Q4. Comparing my review to others they are saying similar things. If you just want something that sounds great and incredibly portable to power your headphones or to connect to your active speakers the K5 is a no brainer for the price. If you want the best of both worlds by using a pair of headphones and passive speakers like me the price is a steal and leaves plenty of budget for an amp.

### ⭐⭐⭐⭐⭐ Simple and effective- A great audio upgrade
*by I***. on 2 December 2025*

Arrived today, setup was incredibly easy was listening to superb sound quality within minutes! Box feels solid and dials have a nice stiffness with a very subtle tactile top centre mark. Lovely LED on the front is incredibly bright- enough to distract while gaming- I use an old slot cover to block it...

### ⭐⭐⭐⭐ Great at what its marketed form but not needed for some types of headphone
*by R***T on 24 June 2025*

Good DAC that adds noticeable sound quality to high impedance headphones. A definite improvement over the motherboard sound card. easy to install, it is literally plug and play and gives good on the fly adjustment to volume & bass. This sits on my desk so is conveniently placed and it is powered by the PC so no external power is needed. Sound clarity is great and there is very little in the way of white noise when using at high volumes. I have found that now I have switched to In Ear Monitors, I don't need the benefits this DAC gives, but this is due to the low impedance of that style of headphone and not the K5. with IEMS I can't get anywhere close to max volume without a substantial amount of blood loss! If you are a true audiophile the K5 may be lacking in features but it is perfect for its advertised use case of gaming and I can absolutely hear the change in audio quality and clarity. directional sound is excellent and really adds to the gaming experience. A bonus was that it shipped with a headphone/microphone splitter cable for those using combined single cables.

## Frequently Bought Together

- Fosi Audio K5 Pro Gaming DAC Headphone Amplifier Mini Hi-Fi Stereo Digital-to-Analog Audio Converter USB Type C/Optical/Coaxial to RCA/3.5MM AUX for PS5/PC/MAC/Computer
- beyerdynamic DT 990 Pro 250 ohm Over-Ear Studio Headphones For Mixing, Mastering, and Editing

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-23*