Activo P1 music player review: Astell & Kern audio quality for considerably less cash

Activo P1: One-minute review

The outside says Activo but at heart this is an Astell & Kern hi-res audio player with all that implies: superb sound, impressive specifications and excellent performance. It doesn't look quite as expensive or as eye-catching as its parent brand's players but it's what's inside that counts, and what's inside here is very good: the same amplification as more expensive players and an ESS ES9219Q SABRE Dual-DAC. There are multiple connections including aptX HD and LDAC on supported hardware, and while the built-in storage isn't enough for much hi-res audio you can add SD cards with capacities up to 1.5TB.

The most important thing is how this player sounds, and in that department it deserves the full five stars: as a music player it sounds superb, and in DAC mode it's a useful audio upgrade for your computer – so yes, it'll easily advance to our roundup of the best MP3 players in the entry-level space. There's a built-in equalizer that you can use to craft complex EQ curves but during our testing we tended to leave that feature off because the P1 sounded so good across multiple genres. In addition to its local playback, the P1 also works with all the key streaming services and includes full Play Store support.

If you're looking for a player to drive Apple headphones, this isn't the device for you: its high quality wireless streaming is in formats that Apple doesn't support and as a result you're missing out on some of the fun, even with AirPods Max. But with compatible headphones or a wired connection to your headphones or hi-fi this is a wonderful audio player and music streamer that delivers a performance you'd normally expect to pay a lot more to experience.

Activo P1 review: Price and release date

• Priced at $440 / £399 / AU$ tbc

The Activo P1 launched on 22 July 2024. It is much cheaper than its parent brand's siblings. In the UK, for example, Astell & Kern's entry level digital audio player, the SR35 , currently retails for £599 (or $649) owing to its 2023 release date, but has a recommended retail price of £799 (or $799). The Activo P1 has a similar specification for $440 / £399. It's not a budget player by any means, because of course that figure is still a lot of money to most of us. But it's a lot less than you'd typically pay for this specification.

Activo P1 review: Features

• Bluetooth 5.3; SBC, AAC, aptX HD and LDAC codec compatibility
• 32bit/384kHz and DSD256
• Wired and wireless DAC

The P1 has an ES9219Q SABRE Dual-DAC. Its built-in amplifier is based on the Astell & Kern Teraton Alpha system, which promises exceptional clarity and detail and which you'll also find in the Astell & Kern SR35. It's powered by an octa-core processor and delivers up to 20 hours of battery life; there's dual-band Wi-Fi, 64GB of internal memory and an SD card slot supporting capacities up to 1.5TB. You'll fill the internal storage in no time if you're listening to hi-res audio files but it's fine for more compressed formats and SD cards are cheap to add.

The USB-C connection isn't just for fast charging; this device can also be connected to a Mac or a Windows PC and used as a wired DAC. There's also a Bluetooth DAC option.

The P1 has native DSD256, 32bit/384kHz support and plays almost every audio file format going, including WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF and MQA.

You can listen to music in several ways. In addition to its own music playing app, the Activo also comes with a collection of third party options including Spotify, Tidal, Qobuz and Apple Music. It also has the Play Store so you can add additional apps.

You can listen to your own tracks via the internal or SD card storage; you can stream from third party apps on the device; or you can use the device as a DAC for your computer with built-in upsampling. That latter option is likely to be a big improvement over many computers' built-in audio, and listening to tracks we know particularly well – such as tracks I'd recorded myself and played directly from Logic Pro X – there was a noticeable expansion of the sound stage, more air in the top end and a tightening of the lower frequencies. The detail was impressive: I could hear my own plectrum on the bass guitar in tracks normally too busy for such details to stand out. If you're a musician, the P1 in its wired DAC mode would be a worthwhile addition to your mixing toolkit.

Features score: 5 / 5

Activo P1 review: Sound quality

• Engaging and spacious sound
• Extensive EQ options
• Audio upsampling with multiple modes

Listening in lossless CD quality over wired headphones Charli XCX's close-miked vocal in 360 feels so close it's almost indecent, while Simple Minds' anthemic New Gold Dream is wonderful. It's so clear that you can easily hear details such as the slightly discordant note sliding in at the beginning of each synth loop before the drums come clattering in and the bass begins its glorious grind. Taylor Swift's Willow is bright, lively and feels like it's happening in the room around you, as does Talk Talk's gossamer Desire , its spaciousness and minimalism feeling incredibly compelling.

The P1 really sings with well separated recordings, whether that's the rainy songs of The Blue Nile, Pet Shop Boys' sad bangers, The Cult's knowing AC/DC homage or Peter Gabriel's live work. Classic remasters such as The Rolling Stones' You Can't Always Get What You Want are grin-inducingly good, and Peter Buck's Rickenbacker really chimes on early REM tracks.

There are lots of options here for controlling the Digital Audio Remaster (DAR) upsampling and shaping 20-band EQs, but with very few exceptions – older, less well recorded tracks mostly – we didn't feel that the standard sound needed tweaking.

The presence of third-party apps means it's easy to do an A/B comparison between streaming and local hi-res music, so for example Broken Chanter's chiming telecaster guitar, Luminous's kitchen-sink production and HiFi Sean's euphoric house are noticeably more detailed and more vivid in high quality FLAC than from streaming services when listening on wired headphones.

The sound quality you get will depend on what you're listening with, so for example if you connect a set of Apple AirPods Max via Bluetooth rather than with a cable a message will pop up to let you know you're listening in AAC: the sound is still very good but that protocol isn't the best quality the P1 can deliver. For non-Apple headphones the P1 supports aptX HD and LDAC for high quality streaming. When we listened to identical songs with wired rather than AAC wireless the difference was evident, with songs feeling less boxy and more spacious.

Sound quality score: 5 / 5

Activo P1 review: Design

• A little 'beige' by A&K standards
• Straightforward button controls
• Mostly operated by touchscreen

Astell & Kern players are typically made with a brutalist eye – all angles, rotary dials and shiny surfaces. This player is slightly less attention-grabbing. Its casing is a mix of aluminium and white plastic, it's a little smaller than its siblings and its interface is light grey rather than the darker tones of the Astell & Kern software.

On top you'll find two connectors, one 3.5mm output and one 4.4mm balanced, and the microSD card slot and USB-C connector are on the bottom edge. Holding the device with its 4.1-inch touchscreen facing you its volume controls are on the top left and the power/wake and menu buttons are on the right.

Third party apps don't integrate with the device's interface, so for example the songs you play through those apps won't be added to the recently played carousel and the apps' interfaces vary from service to service – but they work well and deliver the same features as their smartphone counterparts. Apple Music, for instance, looks like, works like and delivers the same lossless audio as its iPhone version.

The interface is snappy enough in everyday operation but it's a little slow to boot up, taking between 30 and 51 seconds to launch from a cold start. And the P1 gets warm during sustained use; not frighteningly so, but it heats up enough that you could use it as a hand-warmer in winter.

Design score: 4 / 5

Activo P1 review: Value

When you consider the pedigree here, $440 / £399 is good value for money: the Astell & Kern A&norma SR35 has an RRP of $799 / £799 and a street price of $649 / £599 for the same battery life and Bluetooth codec support. The A&K player is more advanced and customizable, but unless you're listening on truly exceptional headphones, I'm not sure paying nearly double the price (at full RRP) would give you nearly double the delight. If you want to upgrade your computer's audio or get a good quality hi-res audio experience, the P1 is very good value.

Value score: 5 / 5

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Activo P1 review: Also consider

How I tested the Activo P1

• Tested for over a week
• Tested with streamed and hi-res downloaded content
• Tested with wired and wireless headphones

I tested the Activo P1 over a period of several weeks in multiple modes: as a DAC and headphone amp for my M2 Mac, which I use for music production; and for listening to music with a mix of wired and wireless headphones including Philips Fidelio X2HR, Apple AirPods Max and Bose QuietComfort earbuds. I listened to a mix of compressed and lossless streaming audio and a selection of FLAC, WAV and AIFF files across multiple genres.

• First reviewed in July 2024

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