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, USB Digital to Analog Converter

Product ID: 146629540

Details

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

🔊16Ω-200Ω headphone drive

🔗USB/Optical/Coaxial inputs

🎚️Adjustable bass & treble knobs

€ 164.77

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Description

🎧 Elevate Every Beat: Your Sound, Your Rules.

COMPACT POWERHOUSE - Sleek full-metal design packs 24-bit/192kHz HD audio with low jitter, fitting effortlessly on any desk or shelf.
COMPLETE SETUP KIT - Includes all essential cables for a smooth, out-of-the-box experience—upgrade your sound without the wait.
CUSTOM SOUND TUNING - Fine-tune your audio vibe with premium metal bass and treble knobs—because your ears deserve personalized perfection.
PLUG PLAY SIMPLICITY - No drivers, no hassle—just instant HiFi sound that elevates your music, movies, and games in seconds.
VERSATILE CONNECTIVITY - Seamlessly switch between PC, TV, and stereo with USB, Optical, and Coaxial inputs for ultimate audio freedom.

The Fosi Audio Q4 is a compact, entry-level DAC and headphone amplifier designed for versatile use with PC, TV, and home stereo systems. It supports USB, Optical, and Coaxial inputs and outputs via 3.5mm headphone jack and RCA, driving headphones from 16Ω to 200Ω. Featuring adjustable bass and treble knobs, it offers customizable sound tuning with 24-bit/192kHz HD audio quality in a durable metal shell. Plug-and-play with included cables, it’s perfect for gamers, music lovers, and multimedia enthusiasts seeking immersive, tailored audio without breaking the bank.

Specifications

ASIN	B07VDQQY95
Audio Output Mode	Stereo
Best Sellers Rank	#12,023 in Electronics ( See Top 100 in Electronics ) #17 in Headphone Amps #50 in Audio Component Amplifiers
Brand Name	Fosi Audio
Compatible Devices	Amplifier, Headphone, Speaker, Television
Customer Reviews	4.4 4.4 out of 5 stars (3,352)
Included Components	User Guide
Interface	Coaxial, Optical, USB
Item Dimensions L x W	3.9"L x 2.9"W
Item Weight	430 g
Manufacturer	Fosi Audio
Material Type	Metal
Maximum Supply Voltage	5 volts_of_direct_current
Minimum Supply Voltage	5 volts_of_direct_current
Model	Q4
Mounting Type	Tabletop Mount
Number of Channels	1
Number of Items	1
Number of Packs	1
Number of Pins	11
Part Number	Q4
Unit Count	1 Count
Warranty Description	24-month warranty

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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€ 164.77

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

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