Can Q4 output analog stereo audio through both the 3.5mm headphone jack and the RCA red/white jacks at the same time?

Q4 will mute the RCA output when headphones are plugged in.

How do I connect Q4 to my computer with USB input?

Your other USB cables must support OTG function. -For iPhone: Use a USB B to Lightning OTG Cable. -For Android: Use a USB B to TYPE C Cable.

Where is the 0db position (Q4)?

The 0db position is at 12 o'clock on the knob.

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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

Product ID: 146629540

Details

Brand
Fosi Audio
Maximum Supply Voltage
5 Volts (DC)
Minimum Supply Voltage
5 Volts (DC)
Mounting Type
Tabletop Mount
Number of Pins
11

🎧Drives 16Ω-200Ω headphones

🔊24-bit/192kHz HD audio

🔌USB/Optical/Coaxial inputs

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€ 133.12

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Elevate your sound. Own the room.

COMPACT POWERHOUSE - Sleek full-metal design fits anywhere while delivering low-jitter, crystal-clear sound.
READY OUT OF THE BOX - Includes all essential cables for effortless setup—no waiting, just listening.
SEAMLESS PLUG AND PLAY - Instant HiFi sound with zero driver hassle—just connect and elevate your audio game.
VERSATILE CONNECTIVITY - Multiple inputs (USB, Optical, Coaxial) and outputs (3.5mm, RCA) for ultimate device compatibility.
PRECISION SOUND CONTROL - Adjust bass and treble with premium metal knobs to tailor your perfect audio vibe.

The Fosi Audio Q4 is a compact, entry-level DAC and headphone amplifier designed for professionals seeking high-fidelity audio enhancement. Supporting 24-bit/192kHz resolution and multiple input options (USB, Optical, Coaxial), it drives headphones from 16Ω to 200Ω and outputs to speakers or amplifiers. With adjustable bass and treble controls housed in a premium metal shell, it offers customizable sound in a plug-and-play format, complete with all necessary cables for immediate use.

Specifications

ASIN	B07VDQQY95
Audio Output Mode	Stereo
Best Sellers Rank	#9,353 in Electronics ( See Top 100 in Electronics ) #9 in Headphone Amps #40 in Audio Component Amplifiers
Brand Name	Fosi Audio
Compatible Devices	Amplifier, Headphone, Speaker, Television
Customer Reviews	4.4 4.4 out of 5 stars (3,291)
Included Components	User Guide
Interface	Coaxial, Optical, USB
Item Dimensions L x W	3.9"L x 2.9"W
Item Weight	430 Grams
Manufacturer	Fosi Audio
Material Type	Metal
Maximum Supply Voltage	5 Volts (DC)
Minimum Supply Voltage	5 Volts (DC)
Model	Q4
Mounting Type	Tabletop Mount
Number of Channels	1
Number of Pins	11
Part Number	Q4
Smart Home Compatibility	Not Smart Home Compatible
Unit Count	1 Count
Warranty Description	24-month warranty

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