These sit in different price classes - Klipsch The Fives costs roughly 2.2x what Audioengine HD4 does. Expect it to lead on paper; the question is whether the gap is audible enough in your room to be worth it.
| Area | Better | Why |
|---|
| Bass | A | Klipsch The Fives digs deeper - 50Hz against 60Hz. |
| Built-in power | A | Klipsch The Fives has the bigger amplifier (160W vs 60W RMS). |
| Connections | A | Klipsch The Fives adds HDMI, phono and digital inputs. |
| Size | depends | Audioengine HD4 is easier to place; Klipsch The Fives is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability | depends | Klipsch The Fives: a sub output; Audioengine HD4: a sub output. |
| Price | B | Audioengine HD4 is cheaper - $449 against $969, about 54% less; arguably a different class. |
A Klipsch The Fives B Audioengine HD4
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 speakers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
The usual trade-off: Klipsch The Fives measures better, Audioengine HD4 costs about about 116% more% less. Whether that gap is worth the money is the call only you can make - and in a normal room it is often smaller than the numbers suggest. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 60Hz anyway, which makes the cheaper Audioengine HD4 much easier to justify. In a large or open-plan room, Klipsch The Fives has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Audioengine HD4 is the easier speaker to get right.
And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.