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Compare speakers at true scale
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References
Front view — overlaid at true scale
AT+A Solitaire S 540BJBL S9900
T+A Solitaire S 540vsJBL S9900
The T+A Solitaire S 540 stands 148.0 cm tall — about 28.0 cm more than the JBL S9900 at 120.0 cm. On footprint the JBL S9900 is the wider cabinet (54.1 cm versus 32.0 cm). At 93 dB against 88 dB, the JBL S9900 is the easier load to drive and plays louder from the same amplifier. The T+A Solitaire S 540 reaches deeper in the bass, down to 20 Hz versus 48 Hz. Low frequencies come from a 220 mm cone on the T+A Solitaire S 540 and a 380 mm cone on the JBL S9900. Both land in a similar price bracket, around $51,650 a pair.
| A | B | |
|---|---|---|
| Manufacturer | T+A | JBL |
| Model | Solitaire S 540 | S9900 |
| HiFi ladder position | #258 of 276 floorstander | #202 of 276 floorstander |
| Height | 1480 mm | 1200 mm |
| Width | 320 mm | 541 mm |
| Depth | 520 mm | 350 mm |
| Weight | 80 kg | 82.7 kg |
| Enclosure | sealed | bass-reflex-rear |
| Drivers | 1× tweeter (magnetostat), 7× 90 mm midrange (StarStabilizer), 4× 220 mm woofer (aluminium) | 1× 380 mm woofer (Pulp cone), 1× 100 mm tweeter (Magnesium compression driver), 1× 25 mm super-tweeter (Beryllium compression driver) |
| Frequency — low | 20 Hz | 48 Hz |
| Frequency — high | 45000 Hz | 50000 Hz |
| Sensitivity | 88 dB | 93 dB |
| Impedance | 4 Ω | 8 Ω |
| Recommended amp | — | 500 W |
| MAP (USD) | $54,900 / pair | $48,400 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | ta-hifi.de ↗ | jbl.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.

