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The FiiO M23 is a solid choice for music lovers who want a high-quality portable player with strong audio performance. It uses a top-tier AKM DAC setup, which helps deliver a natural and balanced sound that suits a wide range of headphones, including larger, more power-hungry models. Its 64GB storage is decent for carrying a good music library, and you can easily expand it with a microSD card. Running Android 10, the device supports popular streaming apps like Apple Music and Tidal, allowing you to enjoy lossless audio on the go. The 5.5-inch screen offers a comfortable size for navigation, and the interface is quite user-friendly, especially for those familiar with Android devices.
Battery life is improved in desktop mode, which is a handy feature if you want longer playtime with high-end headphones. Connectivity is versatile with Bluetooth, USB, Wi-Fi, and multiple headphone outputs (3.5mm and 4.4mm), so it works well with various audio setups. The build quality feels premium thanks to its aluminum alloy body, which is both durable and stylish.
On the downside, some users might find the 1.46-pound weight a bit heavy for everyday pocket carry, and while Android 10 is smooth, it’s not the latest version, so some newer apps or updates might be limited in the future. With a customer rating around 4.1 out of 5, feedback is generally positive but suggests there could be occasional issues or room for improvement. For those focused on rich, detailed sound with flexible streaming options and solid hardware, the FiiO M23 meets those needs well.
The FiiO R9 is designed as a high-end desktop music player and headphone amplifier that excels in delivering excellent audio quality. Powered by dual ES9038PRO DAC chips and THX AAA amplification, it provides clean, powerful sound capable of driving demanding headphones without distortion. Its support for high-resolution audio formats like DSD512 and PCM768kHz means audiophiles will appreciate the clarity and detail it offers. The 64GB built-in storage is decent for offline music, but less than what some might expect for a dedicated streamer—though it supports external storage via microSD cards.
The 6-inch touchscreen runs on open Android, enabling easy control and access to popular streaming apps such as Spotify and Tidal, which is a convenient feature. Connectivity options are versatile, including Bluetooth 5.0, HDMI input/output with full MQA decoding, USB DAC support, Wi-Fi, and network streaming protocols like DLNA and Airplay. This makes the R9 a flexible hub for both wired and wireless listening setups. Its robust metal body with scratch-resistant coating adds durability and helps prevent sound distortion caused by vibrations.
The R9 is a desktop device weighing over 9 pounds, so it’s not suitable for portable use or casual on-the-go listening. Battery life isn’t a focus here since it relies on AC power. For those seeking a premium, feature-rich streamer with exceptional sound for home audio systems, the FiiO R9 provides a compelling option. It may be less suitable if portability or very large built-in storage is a priority.
The FiiO M21 is a strong contender among portable music players, especially for those who prioritize sound quality. Its standout feature is the quad CS43198 DAC chips paired with a fully balanced amplification system, which means you can expect clear, detailed audio with low noise — great for audiophiles who want pristine sound. Powered by the Qualcomm Snapdragon 680 processor and running Android 13, the M21 offers smooth performance and compatibility with popular music apps, making navigation and playback straightforward. Storage comes with 64GB built-in, which is decent for most users, and can be expanded with a microSD card for larger music collections.
Battery life is thoughtfully managed thanks to the patented Desktop Mode, which preserves battery health when plugged in by running on external power without charging the battery. This feature helps extend the longevity of the device’s battery over time. On connectivity, it covers essentials with Bluetooth and Wi-Fi, plus versatile output options including dual headphone jacks (3.5mm and 4.4mm), SPDIF, and USB audio output, catering to various listening setups. The 4.7-inch screen is a good size for easy control without feeling bulky, and the build quality feels solid with a stylish dark blue finish.
A minor consideration is the use of a 9V battery included in the package, which might be unfamiliar compared to typical rechargeable batteries in similar devices. While the M21 ranks respectably in its category, it is not the top bestseller, suggesting that some competitors might offer different strengths. This player suits users seeking high-resolution audio, robust playback capabilities, and flexible connectivity in a well-built portable player.
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