One is a streaming all-in-one and the other is an amplifier. Judge them on how many boxes you want and what you already own, not on the spec sheet alone.
| Area | Better | Why |
|---|
| Power | B | Parasound NewClassic 200 Integrated has more power - 125W against 100W into 8 ohms. That is about 1dB, which is a small step in loudness but real headroom on peaks. |
| Grip on hard loads | A | Marantz MODEL M1 holds up better into a 4-ohm load: its output increases modestly to 125W, where the other barely increases. That matters with demanding speakers far more than the 8-ohm figure does. |
| Built-in DAC | evenly matched | Both have a DAC on board with much the same capability. |
| Streaming | A | Only Marantz MODEL M1 has AirPlay 2, Roon and HEOS. |
| Analogue inputs | B | Parasound NewClassic 200 Integrated takes more analogue sources - 4 against 3. |
| Phono stage | depends | Parasound NewClassic 200 Integrated has a built-in phono stage (MM,MC) and Marantz MODEL M1 does not. Decisive if you own a turntable, completely irrelevant if you do not - and an outboard phono stage is easy to add later either way. |
| Room to grow | evenly matched | The same expansion options on both. |
| Shelf space | depends | Marantz MODEL M1 takes up about 71% less shelf area (552cm² against 1870cm²), and it is 173mm shallower, which is the measurement that decides whether a rack door shuts. |
| Price | A | Marantz MODEL M1 costs less - $1,000 against $1,399 at list. |
A Marantz MODEL M1 B Parasound NewClassic 200 Integrated
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 - Marantz MODEL M1 is the safer partner, because how an amplifier behaves when the impedance drops matters more than its 8-ohm rating. If you play records, Parasound NewClassic 200 Integrated saves you buying a phono stage; if you do not, ignore that row entirely.
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.