Brand | Fosi Audio |
---|---|
Manufacturer | Fosi Audio |
Place of Business | ShenZhen city, Guangdong province 518000,CN |
Model | Q4 |
Model Name | Q4 |
Part Number | Q4 |
Compatible Devices | Headphones., Speakers, Amplifier |
Special features | Portable |
Mounting Hardware | User Guide |
Number of Items | 1 |
Speaker Amplification Type | Passive |
Voltage | 220 Volts |
Power source type | DC 5V |
Batteries included | No |
Batteries Required | No |
Number of Ports | 6 |
Connector Type | Bluetooth |
Mounting type | Tabletop |
Does it contain liquid? | No |
Includes rechargable battery | No |
Manufacturer | Fosi Audio |
Language | English |
Item model number | Q4 |
Product Dimensions | 9.91 x 7.37 x 3.3 cm; 430 g |
ASIN | B07VDQQY95 |
Buy new:
To see product details, add this item to your cart.
Ships from: 鶹 Sold by: Fosi Audio
Save with Used - Like New
To see product details, add this item to your cart.
Ships from: 鶹 Sold by: Warehouse Deals
-
-
-
-
-
-
-
5 VIDEOS
-

Image Unavailable
Colour:
-
-
-
- To view this video, download
Fosi Audio Q4 DAC Headphone Amp for PC, Desktop Digital to Analog Audio Converter for Home Stereo Amplifier and Powered Speakers, PC-USB/Optical/Coaxial Inputs, 3.5mm Headphone/RCA Outputs
Purchase options and add-ons
Brand | Fosi Audio |
Maximum supply voltage | 5 Volts |
Minimum supply voltage | 5 Volts |
Mounting type | Tabletop |
Interface type | USB, Coaxial |
Number of channels | 1 |
Product Dimensions | 9.9L x 7.4W Centimetres |
Manufacturer | Fosi Audio |
About this item
- Versatile Entry-Level: The Fosi Audio Q4 is an entry-level DAC and headphone amp, featuring USB, Optical, and Coaxial inputs, plus RCA and 3.5mm outputs. It drives headphones from 16Ω to 200Ω, enhances audio quality, and connects to speakers or amplifiers
- Plug-and-Play Convenience: Instant HiFi audio with no driver installation. Connect to TVs, computers, speaker systems, or DVD players. Compact design fits anywhere, offering ultimate audio freedom
- Bass and Treble Controls: Adjustable bass and treble knobs for fine-tuning sound. Natural feel with smooth volume adjustment. High-quality metal knobs for a premium experience. Optimize audio for any source
- Compact and High-Quality: Compact DAC converter with full metallic shell. Supports 24-bit/192kHz HD audio with low jitter. Includes output protection circuit for system safety
- Complete Accessories: Includes USB charging cable, optical cable, and PC-USB to Type-B cable. Ensures hassle-free setup and immediate use. Seamless connectivity for various devices. (Note: No microphone input.)
Frequently bought together

Product information
Technical Details
Additional Information
Date First Available | July 31 2019 |
---|---|
Customer Reviews |
4.1 out of 5 stars |
鶹 Rank |
|
Feedback
What do customers buy after viewing this item?
Bestselling | Lowest price
in this set of productsHighest rated
in this set of products- Sennheiser HD 600 Open Dynamic Hi-Fi Professional Stereo Headphones (Black)FREE Shipping by 鶹Get it by Sunday, Aug 10
- Fosi Audio DS2 Portable USB C DAC DSD256 CS43131 Headphone Amp HiFiFREE Shipping by 鶹Get it by Monday, Aug 11
- Sennheiser Consumer Audio HD 599 SE Around Ear Open Back Headphone - BlackFREE Shipping by 鶹Get it by Sunday, Aug 10
Safety and product resources
Safety documents
Compare with similar items
This Item ![]() Fosi Audio Q4 DAC Headphone Amp for PC, Desktop Digital to Analog Audio Converter for Home Stereo Amplifier and Powered Speakers, PC-USB/Optical/Coaxial Inputs, 3.5mm Headphone/RCA Outputs | Recommendations | |||||
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $79.99$79.99 | $119.99$119.99 | -12%$84.74$84.74 Was: $96.29 | $129.00$129.00 | $129.00$129.00 | -18%$129.99$129.99 List: $159.00 |
Delivery | Get it by Sunday, Aug 10 | Get it Aug 29 - Sep 22 | Get it by Sunday, Aug 10 | Get it by Tuesday, Aug 12 | Get it by Tuesday, Aug 12 | Get it Aug 12 - 15 |
Customer ratings | ||||||
Sold by | Fosi Audio | Auins Hifiman | Yima Top | Aoshida Audio-CA | Aoshida Audio-CA | Electronics For Less Canada |
interface type | Coaxial, USB | Coaxial, USB, Optical | USB, Optical, Coaxial | Input: USB, Output: RCA; 6.35/3.5mm Earphone jack | USB Input 3.5mm 6.35mm Headphone Output RCA Output | Component, USB |
number of channels | 1 | 2 | 2 | 2 | 2 | 1 |
number of pins | — | 6 | 32 | 13 | 11 | 9 |
5 volts | — | 5 volts | 5 volts | 5 volts of direct current | — | |
5 volts | 4.5 volts | 5 volts of direct current | — | — | 5 volts of direct current |
From the brand

Amplifying Your Voice, Shaping Our Innovation
-
Guided by our mission of "Redefining HiFi with Unmatched Value", Fosi Audio continues to fuel its passion for the Hifi industry, ramp up R&D efforts, and co-create new HiFi equipment with users. We pledge to bring more amazing Hifi gear with high value for the price, innovative design, cutting-edge technology, and premium quality, to audiophiles worldwide.
-
-
-
-
Product Description

Literally Plug and Play
Fosi Audio Q4 DAC & Headphone Amplifier
A compact and lightweight, user-friendly desktop audio device.

Your Sound Perception Will be Revolutionized
Q4 is an entry-level all-in-one DAC and headphone amplifier. It is plug-and-play and does not require any driver. It has the characteristics of high signal-to-noise ratio and low distortion.
- PC-USB Sampling Frequency: 24bit/96kHz
- Optical/Coaxial Sampling Rates: 24bit/192kHz
- SNR: >105dB; THD: 0.01%; Bass and Treble Range: ±6dB
- Operation Systems: XP/Win7/Win8/Win10/Win11/MAC/Linux
-
Accommodate Various Home Audio Systems
Equipped with USB/Optical/Coaxial inputs and RCA/Headphone outputs for diverse connection needs.
-
DAC + Headphone Amplifier
A compact, lightweight, and user-friendly desktop device that adapts to your varied needs.
-
Perfect for Gaming
Low latency and an outstanding sound stage provide an incomparable feeling of immersion.
-
A Little Gem for Music Lovers
SNR up to 105dB keeps the sound clear and pure at all times and effectively resists interference.
Comparison Chart
![]() Q4 | ![]() SK01 | ![]() SK02 | ![]() K5 PRO | ![]() PH04 | ![]() PH05 | |
---|---|---|---|---|---|---|
Customer Reviews
|
4.1 out of 5 stars 2,964
|
4.5 out of 5 stars 324
|
4.4 out of 5 stars 206
|
4.0 out of 5 stars 1,089
|
4.4 out of 5 stars 565
|
4.6 out of 5 stars 72
|
Type
| DAC+Headphone Amp | Headphone Amplifier/Preamp | DAC+Headphone Amplifier/Preamp | DAC+Headphone Amp | Headphone Amp | Headphone Amp |
MAX Power Output
| - | 2400mW@32Ω(High Gain) | 3.5mm: 280mW,4.4mm: 1100mW@32Ω | - | 40mW@100 Ohm | 310°32Ω |
Input
| PC-USB + Optical + Coaxial | 3.5mm line in | USB + Optical | USB-C+Optical+Coaxial+3.5mm | 3.5mm AUX | 3.5mm AUX |
Output
| RCA + 3.5mm Headphone | 3.5mm/6.35mm headphone jack | 3.5/4.4mm Headphone, AUX/OPT | RCA + 3.5mm Headphone | 3.5mm Headphone | 3.5mm Headphone ×5 |
Treble & Bass Control
| ✓ | ✓ | x | ✓ | x | x |
THD
| ≤0.01% | <0.001% | ≤0.001% | <0.003% | - | <0.001% |
SNR
| ≥105 | ≥108 | ≥120 | >110dB | - | ≥105 |
Terminating Impedance
| 16-200 Ohm | 16-300 Ohm | 16-300 Ohm | 16-300 Ohm | 15-150 Ohm | 16-300 Ohm |
Work Voltage
| DC 5V | USB-C/DC5V | USB-C/DC5V | USB-C/DC5V | DC 12V | DC12V/1A |