No single best amplifier here. What decides it is what you have to drive, what you need to plug in, and how much of the system you want in one box.
| Area | Better | Why |
|---|
| Power | A | Schiit Tyr F has more power - 200W against 150W into 8 ohms. That is about 1.2dB, which is a small step in loudness but real headroom on peaks. |
| Grip on hard loads | evenly matched | Both behave much the same into 4 ohms - output increases strongly (350W and 260W). |
| Noise floor | A | Schiit Tyr F is the quieter design on paper - 120dB against 110dB. Audible mainly with sensitive speakers in a quiet room. |
| Built-in DAC | B | Naim CI-Uniti 102 has a DAC on board; the other needs an external one, which is another box, another power lead and another purchase. |
| Analogue inputs | A | Schiit Tyr F takes more analogue sources - 2 against 1. |
| Use with a TV | depends | Only Naim CI-Uniti 102 has HDMI eARC, so the television can drive it directly and one remote controls the volume. If the system is for music only, this changes nothing. |
| Amplifier class | depends | Schiit Tyr F is Class A/B and Naim CI-Uniti 102 is Class D. Class A/B runs warm and is the long-established mainstream choice; Class D runs cool and draws almost nothing at idle. Modern examples of both measure well - judge by the rest of the page. |
| Shelf space | depends | Naim CI-Uniti 102 takes up about 33% less shelf area (900cm² against 1342cm²), and it is 30mm shallower, which is the measurement that decides whether a rack door shuts. |
| Price | B | Naim CI-Uniti 102 costs less - $1,499 against $1,699 at list. |
A Schiit Tyr F B Naim CI-Uniti 102
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: Schiit Tyr F measures better, Naim CI-Uniti 102 costs about 12% less. With most speakers in most rooms that gap is smaller in practice than it looks here. If this sits under a television, Naim CI-Uniti 102 is the one to buy - HDMI ARC means the TV remote controls the volume and there is no second box in the way. If you already own a DAC or a streamer, the built-in one is money you are paying twice for, and Schiit Tyr F 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.