Description
Fosi Audio ZD3 Fully Balanced DAC & Preamplifier – High-Resolution Audio for Audiophiles
Uncompromising Audio Quality
The Fosi Audio ZD3 is a flagship fully balanced DAC & preamplifier engineered to deliver pure, high-fidelity sound. Featuring the cutting-edge ES9039Q2M DAC chip, it provides rich detail, low distortion (THD+N <0.00008%), and an immersive listening experience.
Versatile Connectivity for Ultimate Flexibility
Equipped with multiple input and output options, the ZD3 adapts to any audio setup:
✔ Inputs: USB, HDMI ARC, Optical, Coaxial, Bluetooth 5.1 (SBC, AAC, aptX, aptX HD)
✔ Outputs: XLR (balanced), RCA (unbalanced)
Premium Components for Superior Sound
Built with audiophile-grade components, including XMOS XU316, QCC3031, and LME49720 op-amps, the ZD3 supports PCM 32bit/768kHz and DSD512 for unmatched clarity. The fully balanced output design minimizes noise and interference, ensuring pure sound reproduction.
Seamless Wireless Streaming
Enjoy hi-res Bluetooth audio with support for aptX HD, delivering low-latency, lossless transmission.
User-Friendly Features
✔ 1.5-inch OLED Display: Provides real-time audio status for effortless control.
✔ Swappable Op-Amp Design: Customize your sound with replaceable DIP8 op-amps.
✔ Bypass Mode: Direct signal transmission for high-purity output.
✔ 12V Trigger In/Out: Enables automatic power syncing across your audio setup.
✔ Compact & Elegant: Matches the Fosi Audio ZA3 amplifier for a seamless audio system.
Important Note for LG TV Users:
A known issue with LG TVs and HDMI-CEC may cause unexpected power cycles. Disabling HDMI-CEC is recommended while we work on a solution.
🔊 Upgrade your audio experience with the Fosi Audio ZD3 – where precision meets power!
Chip Set: XMOS XU316 + ESS 9039Q2M + QCC3031 + LME49720
Maximum Sampling Rate:
USB: PCM 32bit/768kHz; DSD512
OPT/COAX: PCM 24bit/192kHz
Bluetooth: PCM 24bit/48kHz
Output Level:
XLR: 5Vrms RCA: 2.5Vrms
Input Mode:USB, HDMI (ARC), Coaxial, Optical, Bluetooth
Output Mode: XLR, RCA
SINAD: 126dB
THD: ≥120dB
THD+N: <0.00008%
Dynamic Range: ≥123dB
Noise Floor: ≤2μV
Bluetooth Version: 5.0
Bluetooth Connection Distance: ≥13m
Bluetooth Transmission Audio Format: aptX HD, aptX, AAC, SBC
Power Supply: DC 12V 1.5A
USB Compatible Devices: Windows 7, 8, 8.1, 10, 11 (Some require drivers; please refer to the user manual)Mac OS X, Linux (No driver required)
In The Box
DAC ZD3 *1
12V Power Adapter *1
Infrared Remote Control *1
USB-A to USB-B Cable *1
3.5mm Trigger Cable *1
USER MANUAL *1
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form
Cable: 1-month warranty only for manufacturing defects only
Fosi Audio is a dynamic brand dedicated to providing the most comprehensive range of Hi-Fi audio products in the market. We cater to passionate audiophiles by offering Hi-Fi products, DIY kits, and expert guidance, ensuring an immersive audio experience. Beyond a mere transaction, we foster enduring relationships with our clients, supporting them throughout their audio journey.
Our diverse product lineup includes the Hi-Fi power amplifier, pre-amplifier, headphone amplifier, DAC, music player, Bluetooth receiver, DIY board, DIY chassis, and an array of DIY kits. These meticulously crafted offerings embody our commitment to exceptional sound quality and innovation.
Established in China in 2017, Fosi Audio was founded by a team of devoted audiophiles. Our products have gained significant popularity within the Chinese DIY audio community, amassing a large and dedicated following. To expand our reach beyond borders, we launched this website in 2017 and began offering a selection of products on Amazon under the name "Fosi audio." However, please note that many of our outstanding products are not yet available on this website or Amazon. If you cannot find what you're looking for, simply reach out to us via email, and we will be delighted to assist you in finding the perfect product to meet your needs.
At Fosi Audio, we are not just a brand; we are your partner in achieving audio excellence. Join us on this immersive sonic journey and experience the true essence of Hi-Fi audio.

Description
Fosi Audio ZD3 Fully Balanced DAC & Preamplifier – High-Resolution Audio for Audiophiles
Uncompromising Audio Quality
The Fosi Audio ZD3 is a flagship fully balanced DAC & preamplifier engineered to deliver pure, high-fidelity sound. Featuring the cutting-edge ES9039Q2M DAC chip, it provides rich detail, low distortion (THD+N <0.00008%), and an immersive listening experience.
Versatile Connectivity for Ultimate Flexibility
Equipped with multiple input and output options, the ZD3 adapts to any audio setup:
✔ Inputs: USB, HDMI ARC, Optical, Coaxial, Bluetooth 5.1 (SBC, AAC, aptX, aptX HD)
✔ Outputs: XLR (balanced), RCA (unbalanced)
Premium Components for Superior Sound
Built with audiophile-grade components, including XMOS XU316, QCC3031, and LME49720 op-amps, the ZD3 supports PCM 32bit/768kHz and DSD512 for unmatched clarity. The fully balanced output design minimizes noise and interference, ensuring pure sound reproduction.
Seamless Wireless Streaming
Enjoy hi-res Bluetooth audio with support for aptX HD, delivering low-latency, lossless transmission.
User-Friendly Features
✔ 1.5-inch OLED Display: Provides real-time audio status for effortless control.
✔ Swappable Op-Amp Design: Customize your sound with replaceable DIP8 op-amps.
✔ Bypass Mode: Direct signal transmission for high-purity output.
✔ 12V Trigger In/Out: Enables automatic power syncing across your audio setup.
✔ Compact & Elegant: Matches the Fosi Audio ZA3 amplifier for a seamless audio system.
Important Note for LG TV Users:
A known issue with LG TVs and HDMI-CEC may cause unexpected power cycles. Disabling HDMI-CEC is recommended while we work on a solution.
🔊 Upgrade your audio experience with the Fosi Audio ZD3 – where precision meets power!
Chip Set: XMOS XU316 + ESS 9039Q2M + QCC3031 + LME49720
Maximum Sampling Rate:
USB: PCM 32bit/768kHz; DSD512
OPT/COAX: PCM 24bit/192kHz
Bluetooth: PCM 24bit/48kHz
Output Level:
XLR: 5Vrms RCA: 2.5Vrms
Input Mode:USB, HDMI (ARC), Coaxial, Optical, Bluetooth
Output Mode: XLR, RCA
SINAD: 126dB
THD: ≥120dB
THD+N: <0.00008%
Dynamic Range: ≥123dB
Noise Floor: ≤2μV
Bluetooth Version: 5.0
Bluetooth Connection Distance: ≥13m
Bluetooth Transmission Audio Format: aptX HD, aptX, AAC, SBC
Power Supply: DC 12V 1.5A
USB Compatible Devices: Windows 7, 8, 8.1, 10, 11 (Some require drivers; please refer to the user manual)Mac OS X, Linux (No driver required)
In The Box
DAC ZD3 *1
12V Power Adapter *1
Infrared Remote Control *1
USB-A to USB-B Cable *1
3.5mm Trigger Cable *1
USER MANUAL *1
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form
Cable: 1-month warranty only for manufacturing defects only
Fosi Audio is a dynamic brand dedicated to providing the most comprehensive range of Hi-Fi audio products in the market. We cater to passionate audiophiles by offering Hi-Fi products, DIY kits, and expert guidance, ensuring an immersive audio experience. Beyond a mere transaction, we foster enduring relationships with our clients, supporting them throughout their audio journey.
Our diverse product lineup includes the Hi-Fi power amplifier, pre-amplifier, headphone amplifier, DAC, music player, Bluetooth receiver, DIY board, DIY chassis, and an array of DIY kits. These meticulously crafted offerings embody our commitment to exceptional sound quality and innovation.
Established in China in 2017, Fosi Audio was founded by a team of devoted audiophiles. Our products have gained significant popularity within the Chinese DIY audio community, amassing a large and dedicated following. To expand our reach beyond borders, we launched this website in 2017 and began offering a selection of products on Amazon under the name "Fosi audio." However, please note that many of our outstanding products are not yet available on this website or Amazon. If you cannot find what you're looking for, simply reach out to us via email, and we will be delighted to assist you in finding the perfect product to meet your needs.
At Fosi Audio, we are not just a brand; we are your partner in achieving audio excellence. Join us on this immersive sonic journey and experience the true essence of Hi-Fi audio.
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OUR HONEST REVIEWS FROM THE CO-FOUNDERS & AUDIOPHILES
View allTRUSTED BY OVER 35K+ MUSIC ENTHUSIAST
Let customers speak for us
from 5291 reviews
Got these after I ruined the cables for my Truthear Nova. Definitely better than the stock cable and the mic quality in my testing was pretty clear as well.
For the price, it's really a great product. The best part is that, many high end DACs do not allow the use of earphone/headphone's mic and inline remote but this one does. I am extremely happy with the product. Thanks a lot for such an awesome product. 👍👍👍👍👍👍👍👍

I absolutely fell in love with this IEM. This is an IEM that made me rethink what correct/natural should sound like. This one has a lot of bass which is good and bad depending on the tracks that you are listening to. The mid range is tonally correct. And the treble is very interesting. Interesting in the sense that there is not much lower treble or mid but there is noticeable amount air and upper treble presence which makes this non fatiguing and also helps percussion instruments cut through the bass. I really love the presentation. The only part where this IEM falls apart is in complex tracks. There it gets a bit jumbled up. And one thing is that you have to play them at higher than normal volumes to truly enjoy them and open up the vocals and treble otherwise they do sound muddy. They scale very very well with volume

It's a 6 star out of 5 star. Just don't look at anything else. Earaudio cables are best. It's neautral and clean and slightly warm because of copper.

It will be hard to believe although I hear a subtle noticable difference in the audio quality from the OEM cable.

It feels like i am hearing the songs for the first time. My first IEM and I am very happy with the sound. Perfect bass, not as much as you get in regular headphones which ruins the song.
Love the way you had packed my product. Also, the product was really good. Had a good audio quality compare to which you get in market nowadays. Happy to be your customer. Looking forward for more products. Thank you.
Good quality cable and sound quality.
The soundstage and imaging in games is awesome. I can hear every minute detail
Very detailed sound and wide sound stage
The quality of the product really good and audiostore experience as well
The audio quality was great... And this is the first time I m buying from audio store... It was good experience and it came very faster than i expected !
The resolution of audio has improved drastically due to the balanced cable. The cable makes my Shanling UA2 Plus DAC + Amp to provide more power to the drivers of my Sennheiser HD620S headphones. So, the volume of the headphones has doubled.
The build is solid and the most impressive thing is the flat sound stage.It is recorded to use a portable DAC to get the best sound possible.Not recommended for bass lovers

Good