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Fosi Audio Q4 - Mini Stereo Gaming DAC & Headphone Amplifier, 24Bit/192kHz USB/Optical/Coaxial to RCA AUX, Digital-to-Analog Audio Converter Adapter for Home/Desktop Powered/Active Speakers - Black

4.4 out of 5 stars 900 ratings

Price: $85.99
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Colour Name: Black

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Brand Fosi Audio
Interface type USB, Coaxial
Number of channels 2

About this item

  • Easy to set up, no special software, app, or driver to install, a true plug-and-play digital audio adapter
  • With USB, optical and coaxial S/PDIF inputs can fit with most home audio system, and RCA output can be connected to amplifier or powered speakers on your desktop; Built-in Hi-Fi headphone amp chip can drive most 16ohm to 200ohm headphones
  • 160mW RMS(32 ohms, 20 Hz - 20 KHz, 0.01% THD), with bass and treble control can be used as preamp or volume controller for your PC/MAC/Computer
  • Come with 5V USB power supply cable, optical cable, USB type B cable and 18-month warranty; Full metallic shell to ensure high quality
  • Come with 5V USB power supply cable, optical cable, USB type B cable and 18-month warranty; Full metallic shell to ensure high quality

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Special offers and product promotions

  • Save 10% on this item when you purchase 1 or more ♥ T20 Tube Amplifier ♥ offered by Fosi Audio AU. Enter code CFG8GG6Z at checkout. Here's how (terms and conditions apply)
  • Save 10% on this item when you purchase 1 or more ♥ BT20A Bluetooth Amplifier ♥ offered by Fosi Audio AU. Enter code NZSLMMP6 at checkout. Here's how (terms and conditions apply)

Product details

Colour Name:Black
  • Package Dimensions ‏ : ‎ 19.6 x 16 x 7 cm; 410 Grams
  • Date First Available ‏ : ‎ 19 July 2019
  • Manufacturer ‏ : ‎ Fosi Audio
  • ASIN ‏ : ‎ B07VDQQY95
  • Item Model Number ‏ : ‎ Q4
  • Customer Reviews:
    4.4 out of 5 stars 900 ratings

Frequently bought together

  • Fosi Audio Q4 - Mini Stereo Gaming DAC & Headphone Amplifier, 24Bit/192kHz USB/Optical/Coaxial to RCA AUX, Digital-to-Analog
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Product Description

Fosi Audio Headphone Amplifer DAC-Q4

Frequently Asked Questions:

Q1. How do I power the DAC-Q4?

A: You will need to use the supplied Micro-USB cable to power it, I recommend using the PC-USB port/5V to power it. Note: The Micro-USB cable cannot be fully inserted into the device power port, please do not force it. Subsequent revisions have been made.

Q2. Why no Audio Output on the back of the device?

A: The Audio Output is disconnected when headphones are connected. Solution: Disconnect the headphone.

Q3. Why do I get endless white noise?

A: Please check that your input device is using Dolby/DTS audio, please switch off Dolby/DTS audio and try again.

Q4. No Dolby/DTS audio and I still get noise through the USB input?

A: 1. Please switch the USB port to USB 3.0 or back USB port and try again, as some USB ports have unstable data transmission;

2. Please try again with another computer;

3. Please replace the PC-USB cable and retest, contact me for compensation if the original cable is faulty;

4. Please change the power supply adaptation and retest, why? because of the ageing of the power supply there may be an abnormal power supply resulting in white noise. I recommend using the PC-USB port/5V to power it.

Q5. USB Device not recognized on Windows?

A: ● Select Start, then type device manager in the Search box, and then select Device Manager. ● Expand Universal Serial Bus controllers. Press and hold (or right-click) a device and select Uninstall. Repeat for each device. ● Once complete, restart your computer. Your USB controllers will automatically install.

If Windows update causes the device to be unrecognised, please update all windows components and reboot, retest. Please contact me for a solution.

Fosi Audio Headphone Amplifer DAC-Q4

Frequently Asked Questions:

Q6. How to do plug and play on Windows?

A: 1. Just click the sound icon in your notification area.

2. Click the “Select playback device” option.

3. Select the playback device "Digital HiFi Audio".

Q7. I can't play Spotify music in Plug and Play mode?

A: Please exit the Spotify app and switch the playback device to the computer's own sound card device, open Spotify and play, confirm that it works and then switch the playback device to DAC-Q4 "Digital HiFi Audio".

Q8. How do I get the highest 24Bit/96kHz resolution on my PC?

A: Right-click the PC sound icon in the lower right corner, open Volume Mixer, click on the icon of the device/SPDIF: “Digital HiFi Audio” to open the Properties, click the Advanced, select 24Bit, 96000Hz for maximum sound quality output.

Q9. Why do I get an intermittent sound?

A: 1. Please switch the USB port to USB 3.0 or back USB port and try again, as some USB ports have unstable data transmission;

2. Please replace the PC-USB cable and retest, contact me for compensation if the original cable is faulty.

Q4 N2 BOX X2 M02 M03 TP-02
Q4 N2 BOX X2 M02 M03 TP-02
Type DAC+Headphone Amp Portable Headphone Amp Phono Preamp with Vacumm Tubes Subwoofer Amp/Mono Amp Subwoofer Amp/Mono Amp Subwoofer Amp/Mono Amp
Input USB + Optical + Coaxial 3.5mm AUX RCA+3.5mm AUX RCA RCA RCA
Output RCA + 3.5mm Headphone 3.5mm AUX Active Speakers Passive (Speakers + Subwoofer) Passive Speakers + Active/Passive Subwoofer Passive Subwoofer
Treble & Bass Control
THD 0.01% ≤ 0.005% ≤ 0.1% ≤0.03% ≤0.03% ≤ 0.04%
SNR ≥105dB >100dB ≥ 98dB ≥106dB ≥106dB ≥ 98dB
Terminating Impedance 16-200 Ohm 16-600 Ohm - 2-8 Ohm 4-8 Ohm 2-8 Ohm
Power Adapter - Battery capacity: 2200mA 12V/1.5A 19V/4.74A 32V/5A 24V/4.5A
Work Voltage DC 5V - AC 110V - 240V AC 110V - 240V AC 110V - 240V AC 110V - 240V
MAX Power Output Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers. 330mW@16 Ohm Note: It cannot be directly connected to passive speakers, but can only be connected to active speakers or amplifiers. 100W 200W 220W
BT20A BT10A TB10A V1.0B T20 BT30D
BT20A BT10A TB10A V1.0B T20 BT30D
Type Bluetooth 2.0 CH Amp Bluetooth 2.0 CH Amp 2.0 CH Amp 2.0 CH Amp Bluetooth Tube 2.0 CH Amp Bluetooth 2.1 CH Amp
Input Bluetooth + RCA Bluetooth + 3.5mm AUX RCA RCA Bluetooth + RCA Bluetooth + RCA
Output Passive Speakers Passive Speakers Passive Speakers Passive Speakers Passive Speakers + Headphone Passive Speakers+Active/Passive Subwoofer
Treble & Bass Control
THD ≤ 0.04% ≤ 0.04% ≤ 0.04% ≤ 0.04% ≤ 0.04% ≤ 0.04%
SNR ≥ 98dB ≥ 98dB ≥ 98dB ≥ 98dB ≥ 98dB ≥ 98dB
Terminating Impedance 2-8 Ohm 2-8 Ohm 2-8 Ohm 2-8 Ohm 2-8 Ohm 2-8 Ohm
Power Adapter 24V/4.5A 19V/4.74A 24V/4.5A 19V/4.74A 24V/4.5A 24V/4.5A
Work Voltage AC 110V - 240V AC 110V - 240V AC 110V - 240V AC 110V - 240V AC 110V - 240V AC 110V - 240V
MAX Power Output 100W x 2 50W x 2 100W x 2 50W x 2 50W x 2 50W x 2+100W

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4.4 out of 5 stars
4.4 out of 5
900 global ratings
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Top reviews from Australia

Reviewed in Australia on 12 July 2021
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Reviewed in Australia on 1 October 2021
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Top reviews from other countries

Dean
5.0 out of 5 stars Fosi Q4 Hd58x combo
Reviewed in the United Kingdom on 6 February 2020
Colour Name: BlackVerified Purchase
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5.0 out of 5 stars Fosi Q4 Hd58x combo
Reviewed in the United Kingdom on 6 February 2020
I watched many videos before finally settling for the HD58X then there was the search for an amp to pair with and to be exact was about 3 months in total. Didn't fancy throwing money away to end up being disappointed with something I wouldn't be happy with and get stuck with until in a position financially where I can replace with more trial and error. So many people saying you don't need an amp for the HD58X as they're easy to drive as only 150 ohms. They certainly do need an amp and yes they will run off a smartphone but will sound rather pathetic in comparison to breathing some life into them with an amp. I read a large number of reviews and watched videos recommending different amps from mid range to expensive but none of them mention the Q4. I use on pc with HD music on amazon and sounds spectacular and for gaming mainly fps. I do also use Apo Equaliser with Pc Equaliser Gui so if I want to power up the bass a bit more then I can using the preamp on Apo Equaliser eq'd to my liking. The clarity and overall quality of sound is amazing with no distortion. Changed my earpads on my headphones from the original velour to sheepskin leather but they had fixed mesh on the back which totally ruined the sound quality so to fix this I just cut the mesh completely off the back of the new earpads so you can see straight through them and then used the original foams from my HD58X and they now sound awesome with added base and a miniscule loss of detail sold on Amazon by - FeiYen - and titled 'Replacement Earpads for Sennheiser HD650, HD600, HD580, HD565, HD545 Headphones Sheepskin Leather Memory Foam Ear Pad Cushions', these are superior in comfort compared to the originals they're like air cushions on my ears. The HD58x has the most base out of the hd6 lineup but with the setup described above the turned up with the base boost and Apo preamp these things literally rattle on my head (as someone also said in his review for the earpads he also has HD58x and he was right) which is nice to experience but will damage your hearing if listening to music at volumes of this level but just trying to give a description the quickest way of what they are capable of with this amp but yes I'm very pleased with my purchase and can now experience sound like I never had before.

I will just add that this amp also converts a dolby digital source to dolby digital atmos for headphones great for movies and gaming.
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Liam
4.0 out of 5 stars Great entry level DAC
Reviewed in the United Kingdom on 24 April 2021
Colour Name: BlackVerified Purchase
2 people found this helpful
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A. Stevens
5.0 out of 5 stars Cracking!!.
Reviewed in the United Kingdom on 23 November 2020
Colour Name: BlackVerified Purchase
One person found this helpful
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Paul33
5.0 out of 5 stars Need decent phones/speakers to make this worthwhile !
Reviewed in the United Kingdom on 22 July 2021
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One person found this helpful
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The Geemiester General
5.0 out of 5 stars Gamble paid off
Reviewed in the United Kingdom on 8 July 2021
Colour Name: BlackVerified Purchase