Different price classes - Yamaha A-S3200 costs roughly 2x what Denon AE PMA-A110 does. Expect it to lead on paper; the question is whether you will hear the difference through the speakers you own.
| Area | Better | Why |
|---|
| Power | A | Yamaha A-S3200 has more power - 100W against 80W into 8 ohms. That is about 1dB, which is a small step in loudness but real headroom on peaks. |
| Room size | depends | We rate Yamaha A-S3200 the better fit for a large room and a very large room, and Denon AE PMA-A110 for a small room. Match the amplifier to the room you actually have, not the one you want. |
| Grip on hard loads | B | Denon AE PMA-A110 holds up better into a 4-ohm load: its output nearly doubles to 160W, where the other increases strongly. That matters with demanding speakers far more than the 8-ohm figure does. |
| Noise floor | A | Yamaha A-S3200 is the quieter design on paper - 114dB against 110dB. Audible mainly with sensitive speakers in a quiet room. |
| Built-in DAC | B | Denon AE PMA-A110 has a DAC on board; the other needs an external one, which is another box, another power lead and another purchase. |
| Analogue inputs | A | Yamaha A-S3200 takes more analogue sources - 7 against 4. |
| Room to grow | evenly matched | The same expansion options on both. |
| Price | B | Denon AE PMA-A110 costs less - $3,999 against $8,000 at list. |
| Watts per dollar | B | Denon AE PMA-A110 is the cheaper watt - about $50 per watt against $80. A blunt measure, and it says nothing about how either sounds, but it is the honest one for raw output. |
A Yamaha A-S3200 B Denon AE PMA-A110
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?
Neither runs away with it - they trade advantages. Let the "depends" rows and the speakers you already own settle it. If your speakers are a difficult load - 4 ohms nominal, big woofers, or a sensitivity in the low 80s - Denon AE PMA-A110 is the safer partner, because how an amplifier behaves when the impedance drops matters more than its 8-ohm rating. If you already own a DAC or a streamer, the built-in one is money you are paying twice for, and Yamaha A-S3200 becomes the more rational buy.
What a spec sheet cannot show: how either sounds with your speakers, how the controls feel 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.