KIWI EARS SERIES · PORTABLE SOURCES
Allegro Series connects modern USB-C devices to the headphones and IEMs you already own. From a simple headset adapter to balanced high-output DAC/amps, each product solves a clear source problem without turning portable listening into a desktop project.
Restore the headphone jack.
CHOOSE BY USE, NOT BY SPEC RACE
A DAC/amp should provide the connection, output, and noise performance your gear needs — without adding unnecessary bulk or complication.
AD1 restores a 3.5 mm CTIA headset connection and microphone input. AD1 Pro adds output choices and EQ. Allegro Mini gives both 3.5 mm and 4.4 mm outputs in a pocket body, Allegro BAL minimizes cable clutter with a direct right-angle balanced connection, and Allegro Pro adds more headroom for demanding portable setups.
3.5 mm · 4.4 mm · Compact
Pocket Dual Output
Carry both single-ended and balanced connections without committing to a larger source stack.
Best for
Listeners with multiple cables, IEMs, or portable devices.
Amplified · Flexible · High-Resolution
More Headroom
A stronger amplifier stage and dual outputs support systems that need more voltage, current, or volume margin.
Best for
Higher-demand headphones, balanced cables, and listeners building a more capable portable chain.
The connection you actually need
Start with 3.5 mm, 4.4 mm, microphone support, and device orientation before comparing headline numbers.
Useful volume headroom
A capable output should reach your listening level cleanly without living at the limit of the device.
Low-noise operation
Sensitive IEMs benefit from a quiet source that does not add audible hiss during soft passages.
Less cable friction
Direct-connect and compact formats keep the portable chain easier to carry, pocket, and use every day.
What defines the series
PORTABLE SIGNAL ENGINEERING
Allegro preserves the signal between a modern digital device and the headphones or IEMs connected to it. Conversion, amplification, output compatibility, noise control, and portable power management are treated as one complete source system.
Digital Conversion
The DAC translates the source signal into analog audio while preserving detail, timing, and channel information.
Amplifier Headroom
The output stage provides practical volume and dynamic headroom for the intended headphone or IEM load.
Output Compatibility
Connection options are selected around real listening chains, from simple headset use to balanced portable systems.
Noise & Power Control
Power regulation, grounding, and circuit layout help keep the background clean inside a compact, device-powered format.
Product lineup
Kiwi Ears
AD1Kiwi Ears
Allegro MiniKiwi Ears
Allegro ProKiwi Ears
AD1 ProKiwi Ears
Allegro BALCompare the series
| Comparison |
Kiwi Ears
AD1
|
Kiwi Ears
AD1 Pro
|
Kiwi Ears
Allegro Mini
|
Kiwi Ears
Allegro Pro
|
Kiwi Ears
Allegro BAL
|
|---|---|---|---|---|---|
| Primary role | 3.5 mm headset adapter | Upgraded selectable dongle | Pocket dual-output DAC | Higher-output portable DAC/amp | Direct 4.4 mm balanced adapter |
| Outputs | 3.5 mm TRRS | 3.5 mm or 4.4 mm version | 3.5 mm + 4.4 mm | 3.5 mm + 4.4 mm | 4.4 mm balanced |
| Microphone path | Yes, compatible CTIA hosts | 3.5 mm version / compatible hosts | No primary headset focus | No primary headset focus | No |
| Best for | Calls and basic wired listening | Everyday flexibility and EQ | Multiple IEM cables | More headroom | Handhelds and clean right-angle setups |
| Main consideration | Entry-level output | One output per version | Moderate output | Larger than a basic dongle | Balanced-only output |
Kiwi Ears
AD1
Kiwi Ears
AD1 Pro
Kiwi Ears
Allegro Mini
Kiwi Ears
Allegro Pro
Kiwi Ears
Allegro BAL
Qualitative comparison only. Individual fit, tips, and source can change what you hear.
One dynamic driver, tuned until it needed nothing else.
Driver ensembles - quartets to full orchestras, playing in tune.
Everyday monitors built for listening on the move.
Collaborations with the reviewers who hear everything.
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Before you buy
Not automatically. Its first job is to provide a compatible connection, enough clean output, suitable noise performance, and reliable controls. Improvements depend on the limitations of the original source and the requirements of the headphone or IEM.
Only when your cable supports it and the extra output or channel separation is useful. Balanced is a connection topology, not a universal sound upgrade.
AD1 is specifically built around a 3.5 mm CTIA headset connection with microphone ADC support. Confirm host-device and inline-control compatibility before purchase.
Choose Mini for the smallest dual-output setup. Choose Pro when more amplifier headroom and a more capable portable source are the priority.
No portable source should be described that broadly. Compare the product output specifications with the headphone sensitivity, impedance, and your required listening level.
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