Fosi Audio
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
Bottom line: The Fosi Audio K5 Pro Gaming DAC Headphone Amplifier Mini Hi-Fi Stereo ($63.99 on Amazon as of 2026-10-06): Drives 16-300 ohm headphones: 1000mW at 16 ohms, 80mW at 300 ohms; main trade-off: USB Type-C capped at 24-bit/96kHz, below the optical/coaxial 192kHz.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Drives 16-300 ohm headphones: 1000mW at 16 ohms, 80mW at 300 ohms
- ✓ Optical and coaxial inputs accept 24-bit/192kHz sampling
- ✓ Adds mic input the older Fosi Audio Q4 lacked
- ✓ Physical bass, treble, and master volume knobs, no software needed
- ✓ Ships with optical cable, USB A/C-to-C cable, and 3.5mm headset splitter
Cons
- ✗ USB Type-C capped at 24-bit/96kHz, below the optical/coaxial 192kHz
- ✗ NE5532 is a classic op-amp, not a modern low-noise part
- ✗ Volume and power share one button, requiring a long press to switch on
- ✗ Audio source must connect to the USB-A/C port, limiting phone use
Manufacturer description
The Fosi Audio K5 Pro is a desktop DAC and headphone amplifier built for gaming setups, taking USB Type-C, optical, or coaxial input and converting it to RCA and 3.5mm AUX output. It's the upgraded successor to the Fosi Audio Q4, adding a microphone input so you can run a headset through a single box instead of relying on your motherboard's onboard sound. Inside, a Texas Instruments NE5532 op-amp drives a circuit tuned for a low noise floor, rated at THD under 0.003% and SNR above 110dB. USB Type-C handles up to 24-bit/96kHz, while optical and coaxial push up to 24-bit/192kHz. Output power…
SpecPicks Verdict
SpecPicks scored Fosi Audio K5 Pro Gaming DAC Headphone Amplifier Mini Hi-Fi Stereo… using a rating × review-volume × price-fit model applied to published specs and reviews across the audio & midi category. Fosi Audio's audio & midi lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for audio & midi of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Will the Fosi Audio K5 Pro work with a PS5?
Yes. Fosi Audio lists PS5 alongside PC, Mac, and computers as supported sources, and the K5 Pro accepts USB Type-C, optical, or coaxial input from them.
Can the K5 Pro drive high-impedance headphones?
It's rated for 16 to 300 ohm headphones. Output power is 1000mW at 16 ohms, 500mW at 32 ohms, 300mW at 64 ohms, 150mW at 128 ohms, and 80mW at 300 ohms.
Does the K5 Pro support a microphone?
Yes, that's the main upgrade over the Fosi Audio Q4. The 3.5mm interface includes a microphone input, and a headset splitter is included in the box.
What sample rates does it support?
USB Type-C handles up to 24-bit/96kHz. Optical and coaxial both go up to 24-bit/192kHz, so use those inputs for the highest-resolution playback.
What comes in the box?
One K5 Pro DAC amp, a 3.5mm headphone splitter, a 2-in-1 USB Type-A/C to Type-C cable, an optical cable, and a user manual. Check the product listing for current warranty terms.
Key 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
Full Specifications
| Brand | Fosi Audio |
|---|---|
| Unit Count | 1.0 Ounce |
| Connectivity | USB |
| Model Number | K5 PRO |
| 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 |
| Compatibility | PC, PS5, Switch, Mac |
| Built-In Media | User Guide |
| Mfr Part Number | K5 Pro |
Ready to buy?
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 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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