Siblings in GoldenEar's Triton series, so they share a family sound. It comes down to size, output and price.
| Area | Better | Why |
| Bass |
evenly matched |
Much the same reach (29Hz vs 29Hz). |
| Amplifier needs |
B |
GoldenEar T66 is more sensitive (91dB vs 89dB), so it goes louder on the same amplifier. |
| Amplifier match |
A |
GoldenEar Triton Seven is the easier load at 8 ohms; the other is 4 ohms and wants an amplifier rated for it. |
A GoldenEar Triton Seven
B GoldenEar T66
depends neither is better in the abstract - it turns on your room, placement 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?
Neither runs away with it - they trade advantages. Let the "depends" rows and your own room settle it. If your amplifier is modest, vintage or valve-based, GoldenEar T66 is the safer partner - the other will want more current or more watts to sound its best.
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.