
Panasonic UB420P
Score: 85/100
FiiO M23
Score: 83/100Rankings

The Panasonic UB420P is a compact 4K UHD Blu-ray player offering HDR10+ picture and extensive audio decoding. It misses Dolby Vision and has a basic remote, which may deter power users. Ideal for movie lovers who need a space-saving, feature-rich player for physical media.

The FiiO M23 is a high-resolution digital audio player powered by a Snapdragon 660, dual AK4191EQ + AK4499EX DACs and a 4-way THX AAA-78+ amplifier delivering up to 1000 mW balanced output. Its premium build and extensive feature set come with a heavier, bulkier chassis and a higher price point. Best suited for audiophiles demanding maximum power and storage.
| Attribute | ![]() | ![]() |
|---|---|---|
— | 10.5 hoursbest | |
— | 5.5 inchesbest | |
| ↓ lower better | 1,400 g | 299 gbest |
— | 5,500 mAhbest | |
— | 4 GBbest | |
— | 64 GBbest | |
8best | — | |
— | 2,000 GBbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(1) | ||
Processor | HCX Processor with HDR10+ Dynamic Metadata, noise reduction | Snapdragon 660 |
Audio(1) | ||
Supported Audio Formats | Dolby Atmos, Dolby TrueHD, Dolby Digital Plus, DTS:X, DTS-HD Master Audio, Hi-Res Audio up to 192 kHz/24-bit, 7.1-channel | PCM up to 384 kHz/32-bit, DSD256, DSD512, MQA 8x |
Ports(1) | ||
USB Ports | 2 | 1 |
Build & Design(2) | ||
Weight (g) | 1400 g | 299 g |
Dimensions (W×H×D) (mm) | 320×46×198 mm mm | 75.7×136.5×18.1 mm mm |


Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the DP-UB420P for its strong 4K picture quality, compact footprint, and robust audio support, noting that its Twin HDMI and HCX processor deliver cinema-grade performance at a mid-range price. However, they criticize the omission of Dolby Vision, the lack of legacy high-resolution audio formats, and a basic remote, positioning it as a solid but not premium option.
Everyday users praise the player's crisp 4K visuals, easy setup, and convenient Wi-Fi streaming, especially valuing its small size for tight spaces. Recurring complaints focus on the missing Dolby Vision, occasional app lag, a rudimentary remote, and region-lock restrictions for international discs.

Professional reviewers consider the FiiO M23 a go-to DAP for audiophiles, emphasizing its raw power, precise measurements, and premium build. They commend its ability to drive demanding headphones with low distortion while noting the trade-off of a heavier, bulkier chassis and a customized Android UI that may feel less polished.
Everyday users overwhelmingly praise the M23's sound quality, battery endurance, and massive storage capacity, often calling it "audio perfection." The most common criticisms focus on its size and weight, the need for a protective case, and occasional heat during fast charging.