Though Small in Size, the FiiO JIEZI Embodies Rich Acoustic Technology, Allowing Users to Fully Immerse Themselves in a Vast Musical World

• Portable DAC and headphone amplifier
• 10-Band high-precision PEQ
• PCM 384kHz DSD256 decoding
• Lightweight and seamless design
• JIEZI A: 3.5mm jack, JIEZI B: 4.4mm jack

Pro DSP + 10-Band PEQ

The JIEZI 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

In its tiny body, the JIEZI 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 Versions

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.

Thoughtful Design

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.

FiiO Control 

The JIEZI 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. 

Specifications

• Input: USB-C
• Output
  • JIEZI A: 3.5mm
  • JIEZI B: 4.4mm
• SNR: 104dBr
• THD+N: 0.0034%
• THD+N: 5.3uV
• Noise Floor: <0.5 ohms
• Decoding Support: Up to PCM 32bit/384kHz, DSD256
• Dimensions
  • JIEZI A: 8.5mm x 90mm
  • JIEZI B: 9mm x 100mm
• Weight: 6g

In the Box

• FiiO JIEZI DAC/amp
• Quickstart guide
• Warranty card