Best SD Cards For Sony Walkman NW-ZX707
Expert recommendations based on Astell&Kern A&norma SR35 specifications
Recommended Spec
microSD / microSDXC (Class 10 or faster)
Using microSDXC cards with your Astell&Kern A&norma SR35 ensures seamless playback of high-resolution audio files, creating an immersive listening experience. This lets you enjoy your favorite music in its purest form, without interruptions or dropped frames. With an expansive storage capacity, you can store extensive music libraries and playlists with ease.
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#1 Top Pick for Astell&Kern A&norma SR35
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Official Astell&Kern A&norma SR35 SD Card Requirements
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Format: microSD / microSDXC
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Minimum Speed: Class 10 (10 MB/s write)
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App Performance: A1 (Required for OS/Apps)
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Maximum Capacity: Up to 1TB (Official), 2TB (Tested)
Why these requirements? The SR35 is the entry-level premium player from Astell&Kern. It features Quad DACs and a unique tilted screen. While it has 64GB internal storage, the high-res files (DSD/MQA) it is designed to play require massive storage. A reliable name-brand card is essential for the custom UI stability.
Detailed Specifications
Type
microSD / microSDXC
Min Speed Class
Class 10
Write Speed
10 MB/s
Recommended Size
256GB, 512GB, 1TB
Max Capacity
1TB (Official), 2TB (Tested)
Top SD Card Recommendations
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| SD Card | Verified | Speed Class | Write Speed | Pros | Price |
|---|---|---|---|---|---|
SanDisk Extreme microSD
Full Review
|
V30 | Up to 130 MB/s |
|
$ Check Price | |
Lexar Professional Silver (1066x)
Full Review
|
V30 | Up to 120 MB/s |
|
$ Check Price |
Compare These Cards
Open in full compare toolSee how the recommended cards for Astell&Kern A&norma SR35 stack up side by side, or swap in any other card.
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SanDisk Extreme microSD
$ · Mid-Range- UHS RatingUHS-I
- Speed ClassV30
- App PerformanceA2
- Read SpeedUp to 190 MB/s
- Write SpeedUp to 130 MB/s
- EnduranceStandard
Available Capacities32GB, 64GB, 128GB, 256GB, 512GB, 1024GB, 1500GB
Pros
- The gold standard. Fast
- reliable
- A2 rated
- and widely available.
Cons
- Write speeds are slower on 32GB/64GB capacities.
recommended
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Lexar Professional Silver (1066x)
$ · Mid-Range- UHS RatingUHS-I
- Speed ClassV30
- App PerformanceA2
- Read SpeedUp to 160 MB/s
- Write SpeedUp to 120 MB/s
- EnduranceStandard
Available Capacities64GB, 128GB, 256GB, 512GB
Pros
- Great value V30 card. High write speeds.
Cons
- Requires Lexar reader for full read speed.
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SanDisk Extreme microSD
The SanDisk Extreme microSD is the best-selling microSD card on Amazon, pairing V30 video speed with A2 app performance and read speeds up to 190 MB/s. It's a dependable all-rounder for 4K recording, app storage, and everyday file transfers, with capacities ranging from 32GB up to 1TB.
Target User:
Smartphone, drone, and action camera users who want one reliable card for both 4K video and app storage
Best For:
Action Cameras, Drones, Smartphones & Tablets, Mirrorless Cameras
Step up to the SanDisk Extreme PRO for higher sustained write speeds, or down to the Samsung EVO Select if 4K recording isn't a priority and price matters more.
Lexar Professional Silver (1066x)
The Lexar Professional Silver (1066x) microSD card offers excellent read and write performance at a mid-range price point making it a great value for vloggers, photographers, and gamers.
Target User:
Content creators, photographers, and gamers
Best For:
Action Cameras, Mirrorless Cameras, Smartphones & Tablets
Consider this card over others when you need high-speed V30 performance without breaking the bank.
Featured Products on Amazon
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Kingston Canvas Go Plus 128GB microSD Card | Up to 200MB/s | Class 10, UHS-I, U3, V30, A2 | SDCG4/128GB
$Check Price
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Kingston Canvas Go Plus 64GB microSD Card | Up to 200MB/s | Class 10, UHS-I, U3, V30, A2 | SDCG4/64GB
$Check Price
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SANDISK 128GB Extreme microSD UHS-I Card - Up to 245MB/s Read Speed and 120MB/s Write Speed, 5.3K Video, 4K UHD Video, high-Performance for Action cams, Drones, Android Devices - SDSQXH9-128G-GZ6MA
$Check Price
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Frequently Asked Questions
What SD Card Do I Need for Astell&Kern A&norma SR35?
The Astell&Kern A&norma SR35 requires a microSD / microSDXC card with Class 10 speed rating for reliable performance. We recommend 1TB capacity as the sweet spot balancing storage capacity with affordability. The device supports up to 1TB (Official), 2TB (Tested), though most users find 1TB sufficient for daily use. Always choose from trusted brands like SanDisk, Lexar, or Kingston to ensure consistent performance and avoid data loss.
Does the SR35 run Android?
It runs a heavily modified, closed version of Android. You cannot install the Play Store, but it supports whitelisted streaming apps (Tidal, Spotify, etc.). An A1 or A2 card is recommended for best app performance.
Is Class 10 required for Astell&Kern A&norma SR35?
Yes, Class 10 is recommended for Astell&Kern A&norma SR35. It guarantees a minimum sustained write speed of 10 MB/s, which is necessary for stable recording without dropped frames or errors.
What storage capacity should I get for Astell&Kern A&norma SR35?
We recommend 256GB or 512GB or 1TB cards. A 256GB card is good for typical use, with 1TB (Official), 2TB (Tested) as the maximum supported capacity. Larger sizes are useful if you shoot frequently and want to minimize card swaps.
Can I use older or slower cards with Astell&Kern A&norma SR35?
Not recommended. Cards slower than Class 10 may cause dropped frames, corrupted files, or recording failures. Always use Class 10 minimum for reliability.
Does the brand matter for Astell&Kern A&norma SR35?
Yes, trusted brands like SanDisk, Lexar, and Kingston are recommended. Quality brands have better reliability and warranty support. Avoid unknown brands, especially for demanding devices.
What happens if I use the wrong card with Astell&Kern A&norma SR35?
Using cards slower than Class 10 can cause: dropped frames during recording, corrupted files, or complete recording failure. Stick to Class 10 minimum to avoid data loss.
How long will an SD card last with Astell&Kern A&norma SR35?
Quality SD cards typically last 3-5 years with normal use. Replace your card if you experience read/write errors, corrupted files, or if it's been dropped or exposed to extreme conditions.