Both are portable players, $189 against $209. This page puts them side by side on the only three things a maker can be held to — power, output impedance and noise — and then asks the question that actually matters: which headphones do they treat differently?
The Shanling M1 Plus reaches 100 dB on 564 of the 567 models here, the Hidizs AP80 Pro-X on 556.
| Specification | Hidizs AP80 Pro-X | Shanling M1 Plus |
|---|---|---|
| Power into 32Ω | 70 mW | 195 mW |
| Power into 150Ω | 15 mW | 42 mW |
| Power into 300Ω | 7.5 mW | 21 mW |
| Power into 600Ω | 3.7 mW | 10 mW |
| Output impedance | not published | 0.6 Ω |
| Output noise | not published | not published |
| Price | $189 | $209 |
| Headphones it reaches 100 dB on out of 567 | 556 | 564 |
A figure marked not published is missing from the maker’s own material, which is not the same as being good or bad. Where one of these two publishes a number and the other does not, the comparison on that axis cannot be made at all — and saying so is more useful than guessing.
8 headphones reach 100 dB on the Shanling M1 Plus but not on the Hidizs AP80 Pro-X — HiFiMAN Susvara, Moondrop COSMO, Moondrop PARA 2, 5 more.
556 of the 567 models here reach 100 dB on both. That is a power count and nothing more; whether either source suits a given headphone also depends on the two lines above.
Each has a page of its own with every power figure traced to what the maker published and a full headphone list: Hidizs AP80 Pro-X and Shanling M1 Plus. Or put either against your own headphones in the source comparison tool.