These are not the same size of amplifier: Peachtree Carina has roughly 2.4x the power of Sonos Amp. That is about 3.8dB, so it is a question of room size and how hard your speakers are to drive, not of one being the better amplifier.
| Area | Better | Why |
|---|
| Power | A | Peachtree Carina has more power - 300W against 125W into 8 ohms. That is about 3.8dB, so it plays usefully louder before it runs out and has more in hand on peaks. |
| Room size | depends | We rate Peachtree Carina the better fit for a very large room, and Sonos Amp for desk or near-field listening, a small room and a mid-size room. Match the amplifier to the room you actually have, not the one you want. |
| Grip on hard loads | evenly matched | Both behave much the same into 4 ohms - output nearly doubles (580W and 250W). |
| Noise floor | evenly matched | Much the same signal-to-noise ratio (116dB vs 116dB). |
| Built-in DAC | A | Both decode on board. Peachtree Carina goes higher - 768kHz against 44kHz. Very few recordings exist above 192kHz, so treat this as headroom, not as sound quality. |
| Streaming | evenly matched | Only Sonos Amp has AirPlay 2. Neither list is longer in a way that matters - check the one service you actually pay for. |
| Room to grow | evenly matched | The same expansion options on both. |
| Headphones | depends | Only Peachtree Carina has a headphone output. Worth something if you listen late, nothing if you never do. |
| Shelf space | depends | Sonos Amp takes up about 60% less shelf area (518cm² against 1289cm²), and it is 124mm shallower, which is the measurement that decides whether a rack door shuts. |
| Price | B | Sonos Amp costs less - $699 against $1,999 at list. |
A Peachtree Carina B Sonos Amp
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?
The usual trade-off: Peachtree Carina measures better, Sonos Amp costs about 65% less. With most speakers in most rooms that gap is smaller in practice than it looks here. Start with the room. In a large or open-plan room, or with speakers that are hard to drive - low sensitivity, or an impedance that dips - Peachtree Carina has the headroom, and headroom is what stops an amplifier hardening up on peaks. At desk distance or in a small room, 125 watts is already more than most people ever use, and the extra 175 watts would be headroom you pay for and never hear - we rate Peachtree Carina poorly for near-field use for exactly that reason. Think about the whole system: the roughly $1,300 saved by taking the cheaper one would buy better speakers or a subwoofer, which does more for the sound than the difference between two competent amplifiers.
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.