Sony RF400 WHRF400 RF Wireless Review
The Sony RF400 delivers excellent, lag-free TV audio, but there's a big catch: it only works with older televisions. If your setup matches, it's a great dedicated headset.
The 30-Second Version
The Sony RF400 delivers fantastic, lag-free TV sound but only works with older TVs. Build and audio quality are top-tier, but battery life and comfort are just okay. Worth buying if your setup matches its old-school ports.
Overview
The Sony RF400 is a straightforward pair of wireless headphones with one job: to get sound from your TV to your ears without a wire. It uses a simple radio frequency connection instead of Bluetooth, which means no lag for movies and shows.
Just know this is a purpose-built tool, not a do-it-all gadget. It's designed specifically for older TVs with RCA or headphone jacks, and it doesn't play nice with modern HDMI or optical-only sets. If your setup matches, you're golden. If not, you'll need a different model.
Performance
The sound quality is the star here, landing in the 95th percentile in our database. That means it's genuinely good for TV audio, with clear dialogue and decent range. The build quality is also solid at the 94th percentile. Where it stumbles is battery life, sitting in a dismal 18th percentile. The 20-hour rating is just okay, and real-world use can be less. Also, the comfort score is mediocre, so they might not be your all-day binge companions.
Pros & Cons
Pros
- Excellent, lag-free sound quality for TV audio. 98th
- Super simple plug-and-play setup with the included dock. 96th
- Strong, reliable wireless range up to 150 feet. 88th
- Built like a tank with great durability. 82th
Cons
- Battery life is just average and degrades over time. 2th
- Only works with older TVs that have RCA or headphone jacks. 31th
- Ear pads and headband aren't the most comfortable for long sessions.
- No modern features like Bluetooth multipoint or noise cancellation.
The Word on the Street
Specifications
Full Specifications
Design
| Form Factor | Over-Ear |
| Weight | 1.3 kg / 2.8 lbs |
Audio
| Driver Type | Dynamic |
| Driver Size | 40 |
| Impedance | 32 |
| Sensitivity | 100 |
| Codecs | Sony RF400 Wireless Home Theater Headphones for Watching TV (WHRF400), Black, 2.9 (Requires use of RCA Audio Out or Headphone Jack on Television) |
Noise Control
| ANC | Yes |
Connectivity
| Wireless | Yes |
| Bluetooth | 2.9 |
| Wired Connector | Radio Frequency |
Battery
| Battery Life | 20 |
| Charge Time | 7 |
Microphone
| Microphone | Yes |
Features
| Water Resistance | Water-Resistant |
Value & Pricing
At around $138, the value is a mixed bag. You're paying for excellent, reliable sound transmission and not much else. If your main goal is to watch TV without disturbing others and you have the right ports, it's worth it. But if you also want to use these for music, calls, or with modern devices, you're better off putting that money toward a more versatile pair of headphones.
vs Competition
Compared to something like the Sony WH-1000XM6, the RF400 loses on every feature—no ANC, no Bluetooth, no smart features. But for pure TV audio with zero lag, the RF400's RF connection is still king. Against a basic pair like the JBL Tune 770NC, you trade Bluetooth versatility for a more stable, dedicated TV connection. The Apple AirPods Max or Sennheiser Momentum 4 are in a different league entirely for music and mobility, but they're overkill and overpriced if you just need a TV headset.
Common Questions
Q: Will these work with my new smart TV?
Only if your TV has a headphone jack or RCA audio outputs. Most new TVs only have HDMI or optical audio, which this model does not support.
Q: Is there any audio lag when watching TV?
No, the radio frequency connection has virtually no lag, which is the main advantage over Bluetooth for movie watching.
Q: Can I use these with my phone or computer?
Not wirelessly, no. They only connect to the included transmitter dock. You'd need a separate Bluetooth headset for that.
Who Should Skip This
Skip these if you have a modern TV with only HDMI or optical audio outputs. Also, look elsewhere if you need a single headphone for TV, music, and calls. This is a dedicated TV tool, not a general-purpose headset.
Verdict
Buy the Sony RF400 if you have an older TV with RCA/headphone jacks and you want a dead-simple, high-quality wireless audio solution for movies and shows. It does that one job very well. Don't overthink it for this use case.