# Sennheiser RS 175 RF 

- Category: Headphone
- Brand: Sennheiser
- Model: HD 4.50 BT NC
- Part number: HD 4.50 BT NC
- Price (US): currently unavailable
- Price last checked: 2026-08-06
- Rating: 4.2/5 from 6346 Amazon reviews
- Warranty: 2 years
- Product page: https://buildmypc.net/component-details/headphone/sennheiser-consumer-audio-hd-4-50-bt-nc/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | Sennheiser |
| Model | HD 4.50 BT NC |
| Type | Wired |
| Color | Black |
| Frequency | 18 Hz - 22 kHz |

## Key Features

- Compact, ergonomic over ear headphones. Connectivity Technology: Wireless
- Bass boost & surround sound listening modes.  Maximum sound pressure level : 114 dB at 1kHz, 3 percentage THD. THD, total harmonic distortion : <0.5 percentage at 1 kHz, 100 dB SPL
- Digital wireless technology ensures that signal transmission remains clear & accurate
- Easy to set up & enjoy. Range  Up to 100 m. Frequency response  17   22,000 Hz. Signal to noise ratio  Analog input typ. 85 dBA at 1 Vrms. Signal to noise ratio  Digital input   > 90 dBA
- MAIN controls located on headphones

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