These are not the same size of amplifier: Peachtree nova150 has roughly 2.1x the power of Denon PMA-1700NE. That is about 3.3dB, 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 nova150 has more power - 150W against 70W into 8 ohms. That is about 3.3dB, so it plays usefully louder before it runs out and has more in hand on peaks. |
| Room size | depends | We rate Peachtree nova150 the better fit for a large room and a very large room, and Denon PMA-1700NE for a small room. Match the amplifier to the room you actually have, not the one you want. |
| Grip on hard loads | B | Denon PMA-1700NE holds up better into a 4-ohm load: its output nearly doubles to 140W, where the other increases strongly. That matters with demanding speakers far more than the 8-ohm figure does. |
| Noise floor | evenly matched | Much the same signal-to-noise ratio (105dB vs 107dB). |
| Built-in DAC | evenly matched | Both have a DAC on board with much the same capability. |
| Analogue inputs | B | Denon PMA-1700NE takes more analogue sources - 3 against 2. |
| Room to grow | A | Only Peachtree nova150 offers preamp outputs and a pre-out/main-in loop - which decides whether you can add a subwoofer or a power amplifier later without replacing the box. |
| Amplifier class | depends | Peachtree nova150 is Class D and Denon PMA-1700NE is Class A/B. Class D runs cool and draws almost nothing at idle; Class A/B runs warm and is the long-established mainstream choice. Modern examples of both measure well - judge by the rest of the page. |
| Shelf space | depends | Peachtree nova150 takes up about 38% less shelf area (1200cm² against 1949cm²), and it is 111mm shallower, which is the measurement that decides whether a rack door shuts. |
| Price | A | Peachtree nova150 costs less - $1,199 against $2,099 at list. |
| Watts per dollar | A | Peachtree nova150 is the cheaper watt - about $8 per watt against $30. A blunt measure, and it says nothing about how either sounds, but it is the honest one for raw output. |
A Peachtree nova150 B Denon PMA-1700NE
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?
Peachtree nova150 has the edge on paper, though not by much. The rows marked "depends" are more likely to decide this than the score is. If your speakers are a difficult load - 4 ohms nominal, big woofers, or a sensitivity in the low 80s - Denon PMA-1700NE is the safer partner, because how an amplifier behaves when the impedance drops matters more than its 8-ohm rating. 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 nova150 has the headroom, and headroom is what stops an amplifier hardening up on peaks. At desk distance or in a small room, 70 watts is already more than most people ever use, and the extra 80 watts would be headroom you pay for and never hear - we rate Peachtree nova150 poorly for near-field use for exactly that reason.
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.