Jade Audio (FiiO) JIEZI-A DAC Dongle USB-C to 3.5mm

JIEZI DAC Dongle

This compact headphone amplifier is named “JIEZI (芥子)”, drawing from the Buddhist parable “Though small as a mustard seed, it contains Mount Sumeru”. Just as a tiny seed can hold a towering mountain, the “JIEZI (芥子)” portable DAC/Amp, despite its small size, condenses rich acoustic technology, allowing users to fully enjoy a vast musical world.

The JIEZI (芥子) adopts an integrated cable-body design that eliminates complicated wiring. It supports 10-band PEQ tuning and curve saving/sharing, bringing high-precision PEQ tuning technology to entry-level products. Its compact body integrates multiple chips, supporting PCM 32bit/384kHz and DSD256 decoding. Users can choose between inline call control and unbalanced single-ended common-mode architecture, with distinct characteristics between A/B versions. Its golden hoop staff-like appearance and patterns showcase Chinese aesthetic style. At just an entry-level price, JIEZI (芥子) delivers professional and rich audio experiences for audiophiles.

Professional DSP, 10-band customizable PEQ

The JIEZI (芥子) features a professional DSP chip, bringing high-precision PEQ tuning technology to entry-level products. Through the FIIO Control App or web interface can freely adjust frequency curves. You can save these custom sound tunings and easily share them via the cloud, perfectly matching different preferences.

Triple integrated technologies, outstanding performance

In its tiny body, the JIEZI (芥子) integrates a high-performance USB chip, high sampling rate DAC and ADC, and a high-precision DSP. It supports PCM 32bit/384kHz and DSD256 decoding, offering impressive performance at an affordable price.

Dual version with differentiated configurations, choose whichever you like

The JIEZI A, with its 3.5mm jack that supports in-line controls, especially for Huawei phones, can do calls, karaoke, recording, and in-game voice chat— making it a popular and versatile all-in-one solution. The JIEZI B, with its 4.4mm jack, uses the same single-ended common-mode architecture, whose power output rivals that of comparable balanced-drive devices.

Golden hoop cable design, high-quality cable material

The laser-engraved patterns create a layered 3D contrasting effect, bringing such a design concept to life while ensuring the texture is clear yet durable. The adapter-cable-like design is convenient to use; its aluminum-magnesium alloy construction provides long-lasting durability; the housing is made of high-purity palladium-plated oxygen-free copper, resulting in stable transmission; the flexible silicone and braided double outer jacket cable sheath make it flexible yet robust.

Supports FIIO Control, compatible with multiple systems

The JIEZI (芥子) supports connecting via the FIIO Control app on Android phones and a web interface on computers, where you can switch between customizable PEQ presets, UAC version switching, fine-grain volume control, and more. It is compatible with multiple systems, such as Android, iOS, HarmonyOS, Windows, macOS, and Linux. The support of UAC2.0 and 1.0 allows it to perfectly work with different devices.

Hi-Res Audio certified, born for great sound

The JIEZI (芥子) is Hi-Res Audio certified with qualified high-standard sound performance in the industry. All products undergo FIIO’s stringent quality control and reliability testing, and come with FIIO’s guaranteed after-sales support.

Basic Specifications

Product Type: DAC and Headphone Amplifier
Color: Black gold/Black red
Input: Type-C USB cable
Weight: About 6g
Length: (JIEZI A) 90mm
Output: (JIEZI A) 3.5mm
Output Power: L+R≥49mW+49mW (162/THD+N <1%), L+R>34mW+34mW (322 /THD+N <1%)
SNR: 104dBr
THD+N: 0.0034%
THD+N: 5.3uV
Noise Floor: <0.5ohm
Decoding Support: Up to PCM 32bit/384kHz, DSD256