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
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Let customers speak for us
from 5033 reviews
The quality is great, I felt that the base got a bit reduced and mids and treble enhanced using the same. They look premium. The only downside is that they are slightly bulky as the cable is 16 core and sometimes you can feel it behind the ears. Overall a great cable to upgrade your entry level iems to support balanced output

After going through many websites, I came to know about this particular dac, which is purely oriented on audio amplification with dedicated chip unlike other dacs available under 2k, so ordered and received in two days, to my surprise it has significantly enhanced the audio experience on oneplus 13R, with wired earphones (redmi hi-res of 500 INR), usb type a to c adaptor really came into handy and detected as HiFi audio in my dell laptop, cherry on the cake was the pouch, I didn't expect a pouch, very happy with the purchase...

Visited thier store cum experience center it was very great place for sound lovers . Especially like their display of products in thier demo room.The Owner /Staff were cooperative and also suggested me several IEM's before i select one.

I was looking for IEM Tangzu but they were loud and bass was little low as per my ears.Owner or Associate at store suggested me Audicular i liked the sound as well as bass effect its great product.
The Sennheiser IE 200 delivers impressive value for the price. Comfort-wise, they’re lightweight and fit snugly thanks to the ergonomic design and included foam/silicone tips—great for long listening sessions. Build quality is solid despite the plastic housing, and the detachable braided cable adds durability. As for the sound signature, it’s balanced and clean—tight bass, clear mids, and smooth treble without harshness. Bonus points for the dual-tuning feature that lets you slightly tweak the sound. A fantastic entry-level choice for anyone looking to step into the audiophile world.
There sound is pretty good
Good quality
a very well made cable from Dunu with modular plugs and a very secure fastening system (q lock), no microphonics noted, contrary to many reports, usage : Shure se215 + 4.4 plug + Hiby r4 and it really opens up the Shures and the over ear loops are very comfortable too
This is really warm sounding as advertised. Especially vocals are more engaging. The fact that its driven by phone power doesn't affect the sound quality in anyway like in other dacs I have experienced brighter, thin sound or few peaks in upper midrange. If earphones are having good sensitivity then this dac provides good enough power. Although bit bulky build is very good. I'm sure it can withstand frequent drops also. Have not tried the filters and listening to default filter only. One thing I noticed is although on paper power output is good for 32ohm its only good at driving earphones and not headphones. Distortion kicks in when volume is increased even at high gain setting. I'm only guessing current supplying capability for dynamic driver headphones is not sufficient. Tested with 300ohm HD600.
The sound quality is so much better than any other wireless earphones
The quality of wire is superb.
The mic quality is also good.
Length and feel of wire is good. Sound quality with my Tangzu warner is excellent

Have bought this on 17 Aug 2024 and after using it for almost half a year i can surely say this is the best one in this price range...
I like how crisp and clear the audio is, also how good the IEMs respond to EQing, which unlocks a lot whole lot of possibility

Recently bought this after seeing some positive reviews
Fit:
Unlike many reviews which talks about it's fit issue, it's a wonderful fit for me with the stock large size narrow bore tips. I usually go for medium or small size silicone tips but for this one large one fitted well. i guess large size long stem eartips fits well with this iem.
Sound:
Vocals and string instruments sounds forward but never thin or sharp or fatiguing and has a sweet timbre. I guess it's due to its thick note weight and the quality of dynamic driver.
Bass in general is good. But i would prefer little bit more sub bass quantity. Also prefer the bass to be a bit tighter. Not too tight as i am not a fan of too tight bass. Basically here bass decay is slow and i would prefer it to be moderate.
Treble has just enough energy and details but relaxed.
Overall it sounds very nice with a pleasant timbre.
Note that i replaced the stock cable with fiio ls-b 4.4 mm cable.

Great set to start your tip rolling journey!
Got the delivery under 24 hrs.