Conclusion: The Sennheiser RS-130s are a simple, practical, and truly functional pair of headphones. While they do not outperform comparably priced Sennheiser wired models, the quality is clearly better than many wired offerings from other companies. While RF has yet to outperform IR in the transmission quality category, the ability to place the base station anywhere in the room, even behind obstructions, is very convenient.
Pros: Radio Frequency transmission; easy to charge; comfortable; good sound stage
Cons: Some interference issues (hard not to get with RF headphones)