Clearlight Sanctuary 2 leads on our weighted scoring by 0.5 points over Sunlighten Amplify II. Sunlighten Amplify II costs $1,999 less — about 27% — so the question is whether what Clearlight Sanctuary 2 adds is worth that to you. They separate most on price (Sunlighten Amplify II), overall score (Clearlight Sanctuary 2) and type — those are the rows worth reading closely. In short: Clearlight Sanctuary 2 for indoor full-spectrum infrared with the best warranty; Sunlighten Amplify II for high-heat full-spectrum sessions on a standard 120V circuit.
| 2 products | ![]() Sunlighten Sunlighten Amplify II | ![]() Clearlight Clearlight Sanctuary 2 |
|---|---|---|
| Price | $5,300 | $7,299 |
| Overall score | 8.2 | 8.7 |
| Type | Full-spectrum (5 FIR + 3x500W full-spectrum heaters) | Full-spectrum infrared |
| Heater power (kW) | 1,880W total draw | ~2.4 kW |
| Max temperature (°F) | 170°F (in ideal conditions) | 125–145 °F |
| Capacity (persons) | 2 persons | 2 persons |
| Voltage | 120V (NEMA 5-20) | 120V / 20A (config) |
| Amperage (A) | 15.67A draw; dedicated 20A circuit required | 20 A |
| Wood | Eucalyptus or Basswood | Cedar or basswood |
| Warm-up time (min) | — | 20–30 min |
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Sunlighten
Best for High-heat full-spectrum sessions on a standard 120V circuit
Clearlight
Best for Indoor full-spectrum infrared with the best warranty