A valve amplifier against a solid-state one. They are not really rivals: they differ in character, in what they will drive and in what owning them involves, so start there rather than with the watts.
| Area | Better | Why |
|---|
| Power | evenly matched | Effectively the same output - 90W against 100W into 8 ohms is under 1dB, which is not an audible difference in loudness. |
| Grip on hard loads | evenly matched | Both behave much the same into 4 ohms - output increases strongly (150W and 160W). |
| Noise floor | A | Yamaha A-S2200 is the quieter design on paper - 110dB against 97dB. Audible mainly with sensitive speakers in a quiet room. |
| Room to grow | A | Only Yamaha A-S2200 offers preamp outputs - which decides whether you can add a subwoofer or a power amplifier later without replacing the box. |
| Amplifier type | depends | Yamaha A-S2200 is Solid State and McIntosh MA252 is Hybrid. Valve designs are usually warmer and softer at the limits and need their tubes replaced eventually; solid state is the lower-maintenance choice. This is a taste and ownership decision, not a quality one. |
| Shelf space | depends | McIntosh MA252 takes up about 37% less shelf area (1347cm² against 2127cm²), and it is 49mm shallower, which is the measurement that decides whether a rack door shuts. |
| Price | A | Yamaha A-S2200 costs less - $4,500 against $5,000 at list. |
A Yamaha A-S2200 B McIntosh MA252
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both amplifiers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
Yamaha A-S2200 is the easier recommendation: it leads on most of the measured areas and costs less. Take McIntosh MA252 if one of the "depends" rows above describes your system.
What a spec sheet cannot show: how either sounds with your speakers, how the interface feels day to day, and what the app is like to live with - which is where most all-in-one amplifiers are actually won or lost. Power figures are the manufacturers' own and are not measured to a common standard, so treat small differences as noise. If you can hear both, that will tell you more than any row above.