Hidizs SD2 DAC Dongle AMP Type C to 3.5mm - Hi-Res USB DAC

In this review of the Hidizs SD2 DAC dongle, the verdict is straightforward: it is a compact, plug-and-play way to unlock lossless audio from modern phones, tablets, and computers. The SD2 is aimed at listeners who want noticeably improved fidelity over typical phone outputs and Bluetooth dongles without fiddly drivers. Its strongest single feature is the ES9270 decoder that supports up to 32 bit/384 kHz PCM and native 128 DSD, which means users can play high-resolution files directly with a USB Type-C connection for a clear, detailed listening experience.

Key Features

• ES9270 decoder: Native 128 DSD and 32 bit/384 kHz PCM support lets the dongle decode high-resolution files for audible improvement over standard phone output.
• Wide compatibility: Type-C interface works with modern phones, tablets, computers and gaming consoles for simple plug-and-play listening without extra drivers.
• Powerful output: Single-ended output up to about 70 mW per channel at 32 ohm provides enough drive for many higher-impedance headphones.
• Inline control and HD mic: Supports a 24 bit/48 kHz microphone audio stream and basic inline remote functions for calls and voice clarity.
• Sampling rate indicator: Color LED shows current sampling rate at a glance, helping confirm when files are playing at higher resolutions.
• Hi-Res certification: Certified for Hi-Res audio, offering reassurance the device meets defined high-fidelity standards.

Who It's For

The SD2 is best for music listeners who keep a library of lossless or high-resolution files, gamers who want zero-delay wired audio from a console or phone, and anyone who prefers wired headphones with clearer, more detailed sound than Bluetooth can provide. It is particularly useful for people who need a compact, portable solution that requires no driver installation.

Those who should look elsewhere include buyers needing balanced outputs, studio users requiring adjustable gain stages, or anyone who relies exclusively on legacy 3.5 mm jacks without a Type-C port. Also, users wanting Bluetooth convenience or full-featured desktop DAC functionality will find the SD2 intentionally minimalist.

Pros & Cons

Pros

• Clear, detailed audio from the ES9270 decoder that supports high-res PCM and DSD playback.
• Very easy plug-and-play compatibility across Android, iOS devices with adapters, Windows and consoles.
• Good output power for driving many over-ear headphones compared with typical phone outputs.
• Inline mic and basic controls add practical call and app control functionality.

Cons

• No balanced output or advanced desktop DAC controls, so audiophiles needing studio features may want a larger unit.
• Minimal onboard controls and no battery mean it relies entirely on the host device for power and settings.

Specifications

Decoder chip	ES9270
PCM support	Up to 32 bit/384 kHz
DSD support	Native 128 DSD
Output power	Single-ended ~70 mW + 70 mW @32 ohm
Interfaces	USB Type-C input, 3.5 mm female output, includes Type-C to USB-A adapter cable
Microphone	24 bit/48 kHz HD mic support
Certification	Hi-Res audio certified

Our Verdict

The Hidizs SD2 DAC dongle is a smart, affordable upgrade for mobile and portable listeners who want genuine high-resolution playback with minimal fuss. It pairs wide device compatibility and strong decoded output with practical inline mic support, making it a good value for those who prioritize sound quality over desktop-style DAC features.

Frequently Asked Questions

Will the SD2 work with my phone?
Yes; the Type-C interface supports many Android phones and modern devices, and it can be used with adapter cables for devices with different ports.

Does it need drivers?
No; it is plug-and-play on compatible phones, tablets, Windows and console systems without requiring additional drivers.

Can it drive high-impedance headphones?
It offers roughly 70 mW per channel at 32 ohm, which will drive many higher-impedance headphones better than a phone alone, though extreme power-hungry cans may require a dedicated amp.