Kiwi Ears Allegro: A High-Performance USB Audio Device HiFi ES9028Q2M DAC Chip Portable DAC


About Kiwi Ears

Driven by the pursuit of extraordinary audio reproduction, at Kiwi Ears, we create the perfect amalgam of technological innovations with refined tuning strategies. With musicians and studio engineers particularly in mind, we are on an uncompromising quest to produce the finest professional In-Ear Monitors that will reveal every nuance in your music and performance. Never settling for mediocre, our small team of dedicated engineers handcrafts each unit so that you can worry less about what’s in your ears and focus more on the sounds you are making. We are Kiwi Ears, and we’re bringing you music heard like never before.

High-Fidelity DAC Chip

The heart of Allegro is the ES9028Q2M DAC chip, known for its high signal-to-noise ratio and low distortion, guaranteeing an unmatched audio clarity. This chip transforms digital signals into a lifelike audio experience, making it perfect for high-resolution audio playback.


Versatile Output Options

Allegro features dual output options: a 3.5mm single-ended and a 4.4mm balanced output. The balanced output provides a broader soundstage and superior channel separation, ideal for professional-grade headphones, while the single-ended output ensures compatibility with a wide range of audio devices.

Comprehensive High-Resolution Audio Support

The device supports PCM up to 32bit/384kHz and DSD up to DSD256. This wide range of format support ensures that users can experience their favorite tracks in the best possible quality, preserving all the details and dynamics of the original recording.


Universal Connectivity

Designed with a USB Type-C interface, the Allegro is compatible with most modern Android devices (version 5.1 and above), offering a straightforward plug-and-play experience. This universal compatibility makes it a versatile choice for various users.

Optimal Audio Performance

Allegro boasts an impressive THD+N of just 0.0015% at 32 Ohms, ensuring the audio output is pure and undistorted. Combined with its wide frequency response and excellent signal-to-noise ratio, the Allegro delivers a clean, detailed, and uncolored sound.

Powerful and Precise Output

With its powerful output capabilities (70mW at 32 Ohms for the 3.5mm output and 155mW at 32 Ohms for the 4.4mm output), Allegro can efficiently drive a wide array of headphones, from the most sensitive in-ear monitors to more power-hungry over-ear models.


Key Specifications:

DAC Chip: ES9028Q2M

THD+N: 0.0015% (32 Ohms)

Output Power: 70mW@32 Ohms (3.5mm), 155mW@32 Ohms (4.4mm)

SNR: 123dB

Frequency Response: 20Hz~40kHz

Noise Floor: <1μV

Supported Formats: PCM (up to 32bit/384kHz), DSD (DSD256, DSD128, DSD64)

Indicator Lights: PCM (blue), DSD (red)