描述
A digital signal is only as good as the last chip that touched it, and most desktop systems quietly let the worst one win.
Put a desktop amplifier next to a television and a laptop and the chain becomes a mess of formats. The television sends audio over HDMI, the laptop sends it over USB, the phone sends it over Bluetooth, and each source carries its own converter and its own idea of what a clean signal looks like. The result is a system where the same recording sounds different depending on which cable is plugged in. The ZD3 replaces that chain with one conversion stage: everything arrives at the same chassis, and every input leaves through the same balanced output.
The conversion is handled by an ES9039Q2M, the flagship ESS converter in this price class, paired with an XMOS XU316 USB interface, a QCC3031 Bluetooth receiver and an LME49720 operational amplifier. In practice that combination delivers PCM at up to 32 bit 768 kHz and DSD512 over USB, a signal to noise ratio of 126 dB, and total harmonic distortion plus noise below 0.00008 percent, which are numbers that describe a floor rather than a flavour. Inputs cover Bluetooth, USB, optical, coaxial and HDMI ARC, and the outputs are both balanced XLR and single ended RCA, so the DAC can drive a power amplifier properly rather than merely adequately. A 1.5 inch OLED display, an infrared remote, a preamp bypass switch and 12 volt trigger inputs complete the picture.
Buy the ZD3 if you are building a desk system around powered speakers or a compact amplifier and want one conversion point for television, computer, disc transport and phone. The HDMI ARC input is the feature that separates it from nearly every other desktop DAC, because it lets the television hand off audio without a separate extractor box and a second remote. The preamp bypass switch keeps the signal path short when you are feeding an integrated amplifier, and the 12 volt trigger brings the whole rack up together. It pairs directly with the same family of amplifiers, and the bundle options let you add the amplifier or a dedicated 12 volt supply in one order.
One chassis, one conversion, one honest signal path.
Key Features
- ✦ ES9039Q2M digital to analogue converter with XMOS XU316 USB interface
- ✦ HDMI ARC input, so a television connects without an audio extractor
- ✦ Bluetooth 5.0 with SBC, AAC, aptX and aptX HD support
- ✦ Fully balanced XLR and single ended RCA outputs
- ✦ PCM up to 32 bit 768 kHz and DSD512 over USB
- ✦ 126 dB signal to noise ratio and THD+N below 0.00008 percent
- ✦ 1.5 inch OLED display, infrared remote, preamp bypass switch and 12 V trigger
Technical Specifications
- Converter: ESS ES9039Q2M
- USB interface: XMOS XU316
- Bluetooth: QCC3031, Bluetooth 5.0, SBC, AAC, aptX, aptX HD
- Operational amplifier: LME49720
- Inputs: Bluetooth, USB, optical, coaxial, HDMI ARC
- Outputs: Balanced XLR and single ended RCA
- Maximum sampling rate: PCM 32 bit / 768 kHz over USB, DSD512
- Signal to noise ratio: 126 dB
- Total harmonic distortion plus noise: Below 0.00008 percent
- Display: 1.5 inch OLED
- Control: Infrared remote, push button front panel, preamp bypass switch
- Integration: 12 V trigger in and out, synchronised power on and off
- Chassis: Metal enclosure
- Certification: CE
Application Scenarios
The ZD3 earns its place wherever several digital sources share one pair of speakers. A desk system with powered monitors uses USB from the computer for work and Bluetooth from a phone for everything else, with the television arriving over ARC when the evening starts. A compact hi-fi uses the coaxial or optical input from a disc transport and the balanced output into a power amplifier, with the preamp bypass keeping the signal path short. Because the chassis matches the same family of desktop amplifiers, it also works as the front end of a stack built one component at a time, which is how most people actually upgrade.
Frequently Asked Questions
Q: What does the HDMI ARC input actually do?
It accepts audio from a television over the HDMI connection the television already uses for video, so you do not need a separate audio extractor or a second remote to switch sources.
Q: Can it drive headphones?
The ZD3 is a DAC and preamp with line and balanced outputs. It feeds an amplifier or powered speakers rather than driving headphones directly.
Q: Does Bluetooth lose quality compared with USB?
Bluetooth 5.0 with aptX HD is very good for casual listening, but USB carries the full 32 bit 768 kHz and DSD512 capability. Use USB for critical listening and Bluetooth for convenience.
Q: Will it work with my existing amplifier?
Yes. The RCA outputs suit integrated amplifiers and the balanced XLR outputs suit amplifiers with balanced inputs. The preamp bypass switch keeps the path direct when the amplifier handles volume.
Q: Is a power supply included?
The 12 volt power supply option is available in the bundle selection. Choose the variant that matches the equipment you already have.
Q: Does it support DSD?
Yes, up to DSD512 over USB, alongside PCM up to 32 bit 768 kHz.
The EastSupplier Promise
Every EastSupplier order is inspected before dispatch, tracked end to end, and backed by a support team that answers. If a unit arrives damaged, or the item you receive does not match the specification printed here, we replace it or refund it. You are buying a product, not a promise you have to chase.








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