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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Q4

Product ID: 322368101

Details

Brand
Fosi Audio
Maximum supply voltage
5 Volts (DC)
Minimum supply voltage
5 Volts (DC)
Mounting type
Table
Number of pins
11

🎧Drives 16-200Ω headphones

💻Plug & play USB/Optical/Coaxial inputs

🔊160mW RMS power output

NZ$417

Duties & taxes included

In stock

Sold byAmazon Cook IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

🎶 Elevate your desktop audio game—because your ears deserve the best!

EFFORTLESS SETUP - True plug-and-play—no drivers or apps needed, just pure sound
COMPACT DURABLE - Sleek full-metal shell fits perfectly on any desktop setup
AUDIOPHILE GRADE DAC - 24-bit/192kHz bit-perfect streaming with ultra-low noise
VERSATILE CONNECTIVITY - Seamlessly connects via USB, Optical, and Coaxial for all your devices
POWERFUL MINI AMPLIFIER - Delivers crisp 160mW RMS output for immersive sound

The Fosi Audio Q4 is a compact, high-performance DAC and headphone amplifier designed for professionals and audiophiles alike. Supporting 24-bit/192kHz bit-perfect audio via USB, Optical, and Coaxial inputs, it powers headphones from 16 to 200 ohms with 160mW RMS output. Its robust metal chassis ensures durability, while plug-and-play functionality guarantees hassle-free setup. Perfect for desktop use, it transforms your digital audio into rich, detailed sound, making it a must-have for anyone serious about audio quality.

Specifications

ASIN	B07VDQQY95
Audio Output Mode	Stereo
Best Sellers Rank	#23,891 in Electronics ( See Top 100 in Electronics ) #30 in Digital-Analog Converters
Brand Name	Fosi Audio
Compatible Devices	Headphones., Speakers
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (3,256)
Interface	Coaxial, Optical, USB
Item Dimensions L x W	9.9L x 7.4W centimeters
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	Table
Number of Channels	1
Number of Items	1
Number of Pins	11
Part Number	Q4
Unit Count	1.0 Count

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NZ$417

Duties & taxes included

In stock

Sold byAmazon Cook IslandsDelivered 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 Cook Islands.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

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

2 weeks ago

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