TrueScaleCompare speakers at true scale.
TrueSpecsCompare technical specifications (up to 4 speakers).HiFi LadderBrowse every speaker side by side, ordered by size or by price.HiFi SearchFind speakers by the specs you want.TrueScaleAudio
Compare speakers at true scale
Pick two speakers and see them side by side at their real-world size.
References
Front view — side by side at true scale
AT+A Solitaire S 540BTAD Grand Evolution One
T+A Solitaire S 540vsTAD Grand Evolution One
The T+A Solitaire S 540 stands 148.0 cm tall — about 26.8 cm more than the TAD Grand Evolution One at 121.2 cm. On footprint the TAD Grand Evolution One is the wider cabinet (39.4 cm versus 32.0 cm). The T+A Solitaire S 540 reaches deeper in the bass, down to 20 Hz versus 27 Hz. Low frequencies come from a 220 mm cone on the T+A Solitaire S 540 and a 180 mm cone on the TAD Grand Evolution One. On price, the TAD Grand Evolution One sits higher — about $65,000 a pair against $54,900 for the T+A Solitaire S 540.
| A | B | |
|---|---|---|
| Manufacturer | T+A | TAD |
| Model | Solitaire S 540 | Grand Evolution One |
| HiFi ladder position | #263 of 281 floorstander | #209 of 281 floorstander |
| Height | 1480 mm | 1212 mm |
| Width | 320 mm | 394 mm |
| Depth | 520 mm | 547 mm |
| Weight | 80 kg | 64 kg |
| Enclosure | sealed | bass-reflex-down |
| Drivers | 1× tweeter (magnetostat), 7× 90 mm midrange (StarStabilizer), 4× 220 mm woofer (aluminium) | 2× 180 mm woofer (aramid), 1× 140 mm midrange (magnesium), 1× 35 mm tweeter (beryllium) |
| Frequency — low | 20 Hz | 27 Hz |
| Frequency — high | 45000 Hz | 100000 Hz |
| Sensitivity | 88 dB | 88 dB |
| Impedance | 4 Ω | 4 Ω |
| Recommended amp | — | — |
| MAP (USD) | $54,900 / pair | $65,000 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | ta-hifi.de ↗ | technicalaudiodevices.com ↗ |
| Product page | Open product page ↗ | Open product page ↗ |
Larger value highlighted in green. For low-frequency extension, lower Hz = greater bass reach, so the deeper side is highlighted.

