Fosi Audio Q4 Desktop DAC Headphone Amplifier
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Fosi Audio Q4 Desktop DAC Headphone Amplifier
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
We offer free worldwide shipping, except for certain regions such as Ukraine and Russia, where our services are currently unavailable.
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Customer Support
WhatsApp: +8613716612254
support@fosiaudio.com
Mon-Fri: 3:00 AM - 3:00 PM PST -
FAQ’s
If you have any questions, please refer here: FAQs
Product details
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Easy to set up, no special software, app, or driver to install, a true plug-and-play digital audio adapter.
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With USB, optical and coaxial S/PDIF inputs can fit with most home audio systems, and RCA output can be connected to an 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.
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Mini Compact D/A converter, stream bit-perfect 24bit/192KHz HD with low jitter, with output, protect the circuit, safe for your expensive audio system.
Specifications
| Specifications | Details |
|---|---|
| Model | Q4 |
| PC-USB supports input sampling rate | 24Bit/96kHz |
| High and low sound adjustment range | ±6dB |
| Fiber/coaxial support input sampling rate | 24Bit/192kHz |
| Frequency response | 20Hz-20kHz (±3dB) |
| PC-USB support operating system | XP/W7/W8/W10/MAC/Linux |
| Distortion | 0.01% |
| SNR | ≥105dB |
| Amp output maximum power | 100mW 32Ω load |
| Headphone matching impedance | 16Ω-200Ω |
| Working voltage | DC5V |
| RCA output level | 2.3V |
| Size (L*W*H) | 73.5*98*33MM (without knobs and terminals) |
Package Include
| Item | Quantity |
|---|---|
| Fosi Audio DAC-Q4 | x 1 |
| 5V USB Power Supply Cable | x 1 |
| PC-USB Cable | x 1 |
| Optical Cable | x 1 |
| User’s Manual | x 1 |
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FAQs
Please read our FAQs page to find out more.
How to: Choose the right banana plug?
- Closed Screw Type. All Fosi amplifiers use standard-sized speaker terminals (4mm pins).
- Easy to wire up and solidly connect to amplifier and passive speaker.
- If they do not fit, use a little force to tighten the plugs.
- Fosi Audio Banana Plugs (Copper, Silver/Gold Plated): http://bit.ly/40Djq0U, https://bit.ly/3MkPL8t
- Please watch tutorial videos: https://youtu.be/6pYhoqDlvNw / https://youtu.be/RGvBgGAwS9k
How to Diagnose Power Supply Failure?
- The following situations may cause this issue
- Case 1: The LED on the power supply does not light up; Case 2: Amp/Preamp does not turn on; Case 3: When plugged into the Amp, both light on the amp & power supply start blinking; Case 4: Amp/Preamp make noise; Case 5: Sound shuts off by itself
- Possible solution
- Check if the power supply is illuminated when plugged into AC by itself.
Plug power supply into a different socket.
Test the adapter with a meter.
Try a different power supply (within a range of DC input).
Test the included power supply on other electrical equipment.
Please watch the tutorial video by clicking on the link provided. https://youtu.be/yCjygS03zTE
What are the differences in power outputs using the 32V and 48V power supplies?
- Using a more powerful power supply can help prevent distortion.
- Enables amplifier to drive larger, more powerful, or higher-impedance speakers.
What is a GaN?
- The GaN supply has a power output of 240W.
- Offers overload and over-temperature protection.
- The 48V 5A GaN power supply is also available on Amazon.