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Verdict: The Astell&Kern PD5 is a premium, pocketable digital audio player for listeners who use wired headphones and want a more resolving, powerful source than a phone. Its eight-DAC design, 4.4mm balanced output, streaming support and USB-DAC mode make it unusually versatile, while the choice between Quad-DAC and Octa-DAC lets you trade battery life for output power and a more energetic presentation.
It is not the best fit if you mainly use Bluetooth headphones, need a smartphone-smooth interface or want a bright, easily readable outdoor screen. The price is also substantial: What Hi-Fi? lists £899, $1,049 and AU$1,399 for 2026, while the official UK store lists £899 but currently shows the player as sold out. Check your local stock and currency before buying.
What the PD5 is
The PD5 is Astell&Kern’s compact silver-aluminium high-resolution digital audio player. It runs an octa-core processor and uses eight Cirrus Logic CS43198 DACs. The front is dominated by a curved 4.1-inch touchscreen with 720×1,280 resolution, sized for one-handed operation. At approximately 198g, it is heavier than a phone but still practical for a jacket pocket or small listening bag.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchThe player accepts PCM audio up to 32-bit/384kHz and native DSD256. Storage is 64GB internally, with a microSD slot supporting cards up to 1.5TB according to What Hi-Fi?’s 2026 review. That combination is useful if you keep a large local library of lossless or high-resolution files instead of relying entirely on streaming.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
| Specification | PD5 detail |
|---|---|
| Display | 4.1-inch touchscreen, 720×1,280 |
| Processor | Octa-core CPU |
| DAC architecture | Eight Cirrus Logic CS43198 DACs; selectable Quad-DAC or Octa-DAC operation |
| Wired outputs | 3.5mm unbalanced and 4.4mm balanced |
| Maximum formats | PCM up to 32-bit/384kHz; native DSD256 |
| Wireless connections | Dual-band Wi-Fi and Bluetooth 5.3 |
| Bluetooth codecs | LDAC, LHDC, aptX HD, SBC and AAC |
| Internal storage | 64GB |
| Expansion | microSD support up to 1.5TB |
| Weight | Approximately 198g |
Those numbers describe capability rather than guaranteed audible improvement. A 32-bit/384kHz file will not automatically sound better than a well-mastered CD-quality recording, and the player’s output still depends on the headphone, recording and listening environment.
How the PD5 sounds
What Hi-Fi?’s 2026 listening tests found the PD5 clearer and more detailed than the outgoing SR35. The review describes an expansive, uncluttered soundstage, sharply drawn instrumental textures, natural dynamics and strong separation when arrangements become dense. These are listening impressions, not laboratory measurements: no independent frequency-response, distortion or standardized battery test figures were published with the review.
Detail without a crowded presentation
On Agnes Obel’s “Fuel To Fire,” the reviewer heard more information in the recording while retaining a coherent whole. The point is not simply extra treble; quiet textures and overlapping parts remain easier to follow without the image becoming brittle. With revealing wired headphones, that can make familiar material feel newly organized rather than merely brighter.
Three-dimensional organization
Radiohead’s “Reckoner” was used to illustrate the PD5’s cohesive, three-dimensional arrangement. Instruments occupy distinct positions, yet the presentation does not split into disconnected left and right effects. This quality matters most with complex mixes, orchestral recordings and live albums where placement and depth contribute to the performance.
Separation in aggressive mixes
The review also cites Slipknot’s “Left Behind,” where the player kept individual elements intelligible in a dense, forceful track. That does not mean every headphone will suddenly separate a heavily compressed mix. It means the source has enough control and resolution that a capable wired headphone can reveal more of what is already in the recording.
Dynamics and low-level control
Massive Attack’s “Atlas Air” and a DSD64 recording of Michael Jackson’s “Billie Jean” were used to assess dynamic control. The PD5 was judged controlled and expressive rather than flat or sluggish. Again, these conclusions come from a reviewer’s system and ears, so treat them as a character description rather than a promise of a particular measured response.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
What Hi-Fi?’s independent verdict was direct: “Despite the hefty price tag, the PD5 remains a great buy.” The same review’s broader description is that it is “unquestionably clearer and more detailed than its predecessor,” with an expansive, uncluttered soundscape and sharply drawn textures.
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The most important operating choice is whether to use four DACs or all eight. Quad-DAC mode is intended to conserve power and presents what Astell&Kern calls a natural, smooth signature. Octa-DAC mode activates the full architecture for maximum performance, with higher balanced output and a more forceful presentation.
| Mode | Balanced output | Published battery figure | Reported character | Best use |
|---|---|---|---|---|
| Quad-DAC | 6Vrms | Up to 28 hours, according to Astell&Kern’s 2026 specification | Natural and smooth | Travel, long sessions and efficient headphones |
| Octa-DAC | 8Vrms | About 15 hours in the 2026 review; Astell&Kern also quotes 15 hours for this mode | Punchier and more expressive, with maximum performance | Demanding headphones and listeners prioritizing drive and dynamics |
The figures are not directly comparable laboratory measurements. The 28-hour number is the manufacturer’s quoted maximum for Quad-DAC, while the approximately 15-hour Octa-DAC figure is reported by What Hi-Fi? and also presented by Astell&Kern for that mode. Screen brightness, volume, file type, wireless activity and processing features can all change real-world runtime.
When Quad-DAC makes more sense
Choose Quad-DAC when you are commuting, flying or spending a full day away from a charger. The lower power demand is particularly sensible with efficient in-ear monitors or easy-to-drive headphones. You still retain the PD5’s balanced connection and high-resolution playback; you are not switching to a low-quality fallback circuit.
When Octa-DAC is worth the shorter runtime
Use Octa-DAC with headphones that benefit from additional voltage or when you want the PD5’s most energetic rendering. The 8Vrms balanced specification gives you more headroom than the 6Vrms Quad-DAC setting. It does not make every headphone louder in a useful way: sensitive in-ear monitors may reach a comfortable level quickly, and excessive volume can damage hearing. Start low and increase gradually.
Outputs and headphone compatibility
The PD5 provides both a conventional 3.5mm unbalanced output and a 4.4mm balanced output. Balanced does not automatically mean better sound, but it can provide the higher output specification and is useful if your headphones or cable are wired for 4.4mm. Do not connect a 4.4mm balanced plug through an improvised adapter to a 3.5mm socket; use the correct output and cable for the connection.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
The strongest case for buying this player is a good wired headphone. What Hi-Fi? evaluated it with several wired models and heard the greatest benefit in detail, separation and dynamics. A wireless headphone can receive audio over Bluetooth, but it will generally perform its own digital conversion and amplification, so you are not using the PD5’s internal DAC and wired output in the intended way.
Features that change everyday listening
EnviroTune compensation
EnviroTune uses the built-in microphone to analyze ambient noise by frequency band and compensate for frequencies masked by that noise instead of simply raising the master volume. Astell&Kern states that it supports PCM up to 24-bit/192kHz. What Hi-Fi? reports that the processing preserved the PD5’s core character during use. It is most useful on trains, planes or busy streets, where environmental noise can hide bass and detail. It is not a substitute for safe listening levels or effective passive isolation.
Digital Audio Remaster
Digital Audio Remaster, or DAR, can be enabled or disabled according to your source and preference. It upscales 44.1kHz-family PCM to 352.8kHz, 48kHz-family PCM to 384kHz, and PCM below 192kHz to DSD128. Upsampling does not recreate information absent from the original recording. Some listeners prefer the resulting filter behavior, while others prefer the lower processing load and more direct path with DAR off.
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Four DAC filters provide different conversion behavior. The What Hi-Fi? reviewer preferred the natural “Low Latency Slow” filter for most testing. The PD5 also includes a 10-band equalizer, an advanced graph-based EQ, crossfeed and ReplayGain. That gives you several ways to solve different problems:
- Use the standard equalizer for quick tonal changes.
- Use graph-based EQ when you want more precise frequency shaping.
- Try crossfeed with older stereo mixes or recordings that feel unnaturally wide on headphones.
- Use ReplayGain when your library has inconsistent mastering levels and you want fewer manual volume adjustments.
- Compare filters at matched volume; a louder setting can seem better even when the tonal change is small.
Streaming and Roon integration
Dual-band Wi-Fi enables streaming and Roon Ready operation. The 2026 review says Tidal, Qobuz, Amazon Music, Deezer and Apple Music can be downloaded through Google Play. The official UK product page also lists Roon Ready and Qobuz Connect. Availability of individual apps can vary by region, account type and Android compatibility, so confirm that your preferred service appears in Google Play on your unit.
To set up a service, connect the PD5 to your Wi-Fi network, open Google Play, install the app, sign in and download music for offline use if the service supports it. Streaming quality and offline-download behavior are controlled by the service’s own app settings. A large local library remains valuable because it avoids Wi-Fi dead spots and preserves playback when a subscription or service catalog changes.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
USB-C DAC mode
USB-C DAC mode lets the PD5 process audio from a laptop through its internal Octa-DAC architecture. Connect the player to the computer with a USB-C cable, select USB DAC mode on the player, then choose the PD5 as the computer’s audio output. The exact menu wording can vary with firmware and operating system. This function turns the player into a higher-quality wired interface for desktop listening without requiring a separate USB DAC.
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Bluetooth 5.3
Bluetooth 5.3 supports LDAC, LHDC, aptX HD, SBC and AAC. What Hi-Fi? found the wireless connection stable. Bluetooth is convenient for a speaker or occasional wireless listening, but buyers paying for the PD5’s conversion and amplification should expect the best results from wired headphones.
Battery life and storage planning
Battery life depends primarily on DAC mode. Astell&Kern quotes up to 28 hours in Quad-DAC and 15 hours in Octa-DAC. In practical terms, Quad-DAC is the sensible default for travel, while Octa-DAC is a deliberate performance setting for shorter focused sessions. Wi-Fi streaming, Bluetooth, EnviroTune, DAR, screen brightness and high-volume playback can reduce either figure.
The 64GB internal storage is enough for a starter library, but high-resolution files consume space quickly. A microSD card of up to 1.5TB gives the PD5 room for a large collection. Buy a reputable card, format it in the player or according to its instructions, and keep a second copy of irreplaceable music on a computer or backup drive. Expandable storage is convenient, but it is not a backup strategy.
Design, controls and portability
The curved 4.1-inch screen is designed for one-handed use, and What Hi-Fi? found the physical controls logical and uncluttered. The edge-free design looks clean and avoids the sharp transitions found on some metal players. At the same time, the reviewer considered the PD5 less dense and slightly less premium in hand than the SR35.
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The Android-based interface is functional but not as fast or polished as a current smartphone. App launches, library navigation and screen transitions may feel slower if you are used to a modern phone. The reflective display can also be difficult to read outdoors, especially in direct sunlight. Those limitations matter more for streaming and frequent browsing than for starting a familiar album from local storage.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
PD5 versus SR35
The PD5 is positioned as a successor to the SR35, so the comparison is less about a single specification than about priorities. The newer player costs more at launch and is physically perceived as less dense by What Hi-Fi?, but it delivers a clearer, more detailed presentation and a higher balanced-output specification in Octa-DAC mode.
| Comparison point | Astell&Kern PD5 | SR35 information established in the 2026 review material |
|---|---|---|
| Sound description | Clearer and more detailed than the outgoing model, with expansive staging, strong separation and natural dynamics | Described as the outgoing predecessor; no independent SR35 listening measurements are stated here |
| Balanced output | 4.4mm; 6Vrms in Quad-DAC and 8Vrms in Octa-DAC | Not stated in the cited 2026 review material |
| Battery choices | Up to 28 hours Quad-DAC; about 15 hours Octa-DAC | Not stated in the cited 2026 review material |
| Storage | 64GB internal; microSD up to 1.5TB | Not stated in the cited 2026 review material |
| Launch pricing | £899 / $1,049 / AU$1,399 | £799 / $799 / AU$1,299 |
| Hand feel | Clean, edge-free design; reviewer found it less dense and slightly less premium in hand | Reviewer’s physical reference point; additional details are not stated here |
| Interface | Android-based, logical but slower and less slick than a modern smartphone | Not stated in the cited 2026 review material |
The PD5 is the more compelling upgrade when you will use its extra output, balanced cable, high-resolution library or streaming and USB-DAC functions. If your SR35 already drives your headphones comfortably and you do not need those capabilities, the audible and practical gains may not justify the higher price.
Price, availability and what is in the box
What Hi-Fi? reports 2026 pricing of £899 in the UK, $1,049 in the United States and AU$1,399 in Australia. The official Astell&Kern UK storefront lists a £899 sale price but currently marks the PD5 sold out. Prices, promotions, taxes and stock can change by country, so treat these as dated reference figures rather than a permanent global price.
The official UK package includes the PD5 player, a USB-C-to-USB-C cable, a TPU case, three screen protectors, a quick-start guide and a warranty card. Verify regional packaging and warranty terms with the seller, particularly if you are importing the player.
What to buy with the PD5
MicroSD card
A high-capacity microSD card is the most practical addition if your music collection exceeds the internal 64GB. Choose capacity based on your library rather than buying the maximum supported size automatically. Keep your music backed up elsewhere, and avoid removing the card while the player is writing or scanning files.
Wired headphones or a 4.4mm cable
If your headphones include interchangeable cables, a correctly wired 4.4mm balanced cable lets you use the PD5’s balanced output. Choose headphones whose impedance and sensitivity suit your listening levels; balanced connection is not a requirement for good sound, and the 3.5mm output remains available.
Protection and carrying
The supplied TPU case and screen protectors cover basic protection. A small pouch can prevent the metal body and screen from rubbing against keys or grit in a bag. Because the display is reflective, a protector with a matte finish may improve glare, but check that it does not reduce touch sensitivity or image clarity.
Who should buy the PD5
- Wired headphone enthusiasts: You already own, or plan to buy, revealing headphones and want a source with substantial balanced output.
- Listeners with large local libraries: The 64GB internal storage and up-to-1.5TB microSD support accommodate a substantial collection.
- People who need several playback roles: The PD5 combines local files, streaming, Roon Ready support, Bluetooth and USB-C DAC operation.
- Travelers who value a battery choice: Quad-DAC extends the quoted runtime, while Octa-DAC is available when power and dynamics matter more.
- Listeners who tune their system: EnviroTune, DAR, filters, EQ, crossfeed and ReplayGain offer more control than a typical phone.
Who should choose something else
- Mostly wireless listeners: Bluetooth convenience may be all you need, and you would not be using the PD5’s principal wired advantages.
- Phone-like interface seekers: The Android UI is usable but not as quick or slick as a modern smartphone.
- Outdoor-first users: The reflective screen can be hard to read in bright daylight.
- Budget-conscious buyers: At £899 / $1,049 / AU$1,399 in the cited 2026 pricing, it is a significant purchase before adding headphones or storage.
- Listeners with efficient headphones and modest libraries: A less expensive player may provide enough output and storage without paying for features you will not use.
A sensible first-week setup
- Charge and update: Fully charge the PD5, connect it to Wi-Fi and install any available system updates before loading a large library.
- Choose storage: Insert and format a reputable microSD card if 64GB is insufficient. Copy music in organized folders and keep a separate backup.
- Start in Quad-DAC: Use the lower-power mode for initial listening and travel. Switch to Octa-DAC later with demanding headphones, then compare at matched volume.
- Set your output: Use 3.5mm unbalanced or 4.4mm balanced according to your headphone cable. Begin at low volume.
- Install services: Open Google Play, install the streaming apps you use, sign in and configure offline downloads where available.
- Evaluate processing: Try DAR, the four filters, EnviroTune and EQ one at a time. Keep settings that solve a specific problem rather than enabling every option by default.
- Configure USB DAC use: Connect the PD5 to a laptop by USB-C, select USB DAC mode on the player and choose it as the computer’s audio output.
- Protect the player: Fit the case and a screen protector before carrying it with keys or other hard objects.
Final assessment
The PD5 earns its premium price through a combination of qualities rather than one headline specification: a highly resolving wired presentation, strong 4.4mm balanced output, selectable battery/performance modes, broad streaming support, expandable storage and USB-DAC flexibility. Its compromises are equally clear: high cost, a slower Android interface, outdoor screen glare and a much shorter quoted runtime when Octa-DAC is engaged.
For a wired-headphone listener who will use those capabilities, the PD5 is a convincing step beyond the SR35 and a versatile centerpiece for a local-and-streaming library. For someone who mainly listens over Bluetooth or expects phone-level interface speed, its extra hardware is unlikely to repay the price.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
