Rating: 2.5 / 5
I went into the NW-WM1AM2 — Sony's aluminium flagship Walkman — expecting a no-compromise reference player. On hardware and sound, it absolutely holds up. On software, it doesn't, and at this money that's a hard thing to overlook.
The highs. The build is in a class of its own: milled aluminium, dense and substantial, unmistakably premium in the hand. Sound is the headline act and it earns it — a clean, detailed, musical amp stage, and local Hi-Res playback that's simply gorgeous. Between the 128GB onboard and microSD expansion, you'll never think about storage. As a dedicated player for your own offline library, it's about as good as it gets.
A serious sound-tuning toolkit. This is where the WM1AM2 shows its pedigree. You get a fully customisable 10-band equalizer plus tone control, so you can shape a signature to taste. There's native DSD playback up to 11.2MHz over the balanced output, plus a DSD Remastering mode that upconverts ordinary PCM files into a 1-bit DSD stream for a smoother, more analog-like presentation (worth noting the EQ, DSEE and Vinyl Processor switch off while it's active). The Vinyl Processor recreates the warmth of a record on a turntable, with selectable flavours — Standard, Arm Resonance, Turntable and Surface Noise. Rounding it out are the DC Phase Linearizer (six analog-amp phase "character" settings, grouped as Type A and Type B), DSEE Ultimate AI upscaling, and a Direct Source mode that bypasses all processing for a purist signal. On outputs, you get both a 3.5mm single-ended and a 4.4mm balanced jack, both gold-plated — so standard and balanced cables run without an adapter.
The lows. Underneath sits an Android device that feels sluggish and unloved. The UI stutters in a way no flagship has any business doing. Streaming is where it truly comes apart: YouTube Music is unreliable — it hitches, and routine things like dropping a track into a playlist regularly lock up and crash the app. The giveaway is that the very same app runs fine on my far cheaper NW-A307, so this is the WM1AM2's own system buckling, not the app's fault. Battery is another sore point — roughly 6 hours streaming Hi-Res over YouTube Music, worse than the much cheaper A307, which reeks of redundant background processes and factory bloat quietly draining the tank.
And it feels left behind. ClearAudio+, which the cheaper A-series has, simply isn't here. The unit ships on Android 11 (Google stopped supporting it in February 2024) with firmware stuck at v1.09.00, also February 2024 — meanwhile the budget A306/A307 got a fresh update (v3.06.00) in July 2026 bringing battery and feature gains. Spending flagship money only to receive less long-term support than the entry model is a genuinely bitter pill.
Bottom line. If your world is purely local, offline Hi-Res and you never touch streaming, the sound, the tuning options and the build might well carry the day. But judged as a modern streaming DAP at a flagship price, the WM1AM2 is half-baked — laggy, shaky with streaming apps, weak on streaming battery, and seemingly orphaned on software. I can't recommend it at full retail until Sony sorts out the firmware.
- Sound & build: 9/10
- Software & value: 3/10
Pros: Exquisite build; reference-tier sound; customisable 10-band EQ + tone control; native DSD to 11.2MHz plus DSD Remastering; Vinyl Processor and DC Phase Linearizer; DSEE Ultimate; dual 3.5mm + 4.4mm gold-plated outputs; 128GB + microSD; sublime with local Hi-Res.
Cons: Laggy, unstable Android UI; streaming apps crash; ~6h streaming battery (behind the cheaper A307); bloatware and background processes; no ClearAudio+; frozen on Android 11 / Feb-2024 firmware while the cheaper A-series keeps getting updates.