Sennheiser RS 120 II Review

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The Sennheiser RS 120 II On-Ear Wireless Headset is a fantastic product that will far exceed your expectations. This article will discuss Sennheiser‘s features, design, and sound quality. These headsets are less expensive and more unique than traditional Bluetooth wireless headphones; give them a try, and you’ll be hooked on your new headphones. This Sennheiser model has a decent wireless headphone system.

Sennheiser creates some of the most well-received headphone models on the market today and is widely recognized as ‘THE’ headphone manufacturer for casual listening, studio monitoring, and audiophile reference. Sennheiser has a wide range of models with a common design concept: to provide a great sound and build quality at all price ranges using a wireless signal.

Allow the user-friendly Sennheiser RS 120 II to prove itself as the ideal set of wireless headphones for you. With premium sound quality, you surely won’t regret making the purchase.

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Wireless Headphones Features:

  • Open, stereo, Supra-aural, and wireless RF headphone system
  • Detailed, analytical sound reproduction with strong bass response
  • Suitable for all types of modern music and TV applications
  • Wireless freedom with reception through walls and ceilings
  • Range of up to 100 meters (300 feet)
  • Control elements are conveniently positioned to provide easy, intuitive operation.
  • Transmitter with a metal cradle for storing and recharging the headphones
  • Optional wall mounting of transmitter possible
  • Very lightweight headphones, extremely comfortable to wear
  • Appealing, modern design
  • Rechargeable NiMH batteries included (size: AAA)
  • 2-year warranty

This Sennheiser RS 120 II is an RF transmitter. It is a rechargeable headphone that gives you the freedom to wirelessly connect up to 300 feet via lightweight radio frequency (RF). It has a battery life of 20 hours on a full charge. Fit for all kinds of contemporary music and TV applications. This headset gives you the wireless freedom you need.

The signal can pass through walls and ceilings and back to your wireless headphones. The product also comes with an easy-to-use charging cradle where the base is utilized as a battery charger. The RS 120 has three RF channel selectors.

They allow you to select an interference-free channel for much better reception. This product doesn’t work with Bluetooth technology. This device is cable-free and produces good quality sound without using any cables. Quite a commendable wireless technology.

The sound quality of these wireless headphones isn’t affected at all by the given limited distance. Of course, while they may not be the best wireless headphones out there, it still has a decent battery life plus rechargeable batteries.

The rechargeable wireless headphone doesn’t completely compare to Bose headphones, but its wireless transmitter combined with wireless technology makes it a good choice. Of course, these headphones also feature noise-canceling technology plus a charging dock. You not only get a pair of headphones that has a rich sound, and a comfortable padded headband, but also one with a charging dock.

Design and Build

  • Impedance: 24 Ohms
  • Transducer principle: Open, dynamic
  • Ear coupling: Supra-aural
  • Frequency response: 22 – 19,500 Hz
  • THD at 1 kHz, 100 dB SPL: Less than 0.7 percent
  • SPL (1 kHz, 1 V RMS): 106 dB
  • Power supply: 2 AAA cells
  • Operating time: 20 hours
  • Weight: 230 g
  • What’s in the box
  • 1 x Headphones

The Sennheiser RS 120 II padded cushions on the speaker and headband make it very comfortable to wear. Its build quality makes it attractive and contemporary that fit all types of users. You also have the option to mount the wireless transmitter on your wall. You can also place the headset on its base and use it as a charging stand. This product is lightweight, which makes it very comfy to wear.

This headset is lightweight and comfy, weighing only 8.1 ounces. The ear cups have a supra-aural design (this means that the earpads sit on top of your ears). After some time, you can change these ear cushions. Because of the material, they comfortably fit your ears and provide plenty of breathing room. However, noise cancellation is not as effective as headphones with full-coverage ear cups.

The transmitter is required for the headphones to function; hence it is an important component of this device. Its design is beautiful and stylish so that it will blend in well with the rest of your home’s decor. Make sure the transmitter is in the best possible place for optimal performance.

Sound Quality

  • Controls
  • Compatibility
  • Lightweight

With this wireless headphone set, you may get amazing surround sound in the high and mid-range bass. The hissing noise that happens when the transmitter is put near another electrical gadget with remote control is the sole drawback. While this is inconvenient, the answer is simple: keep your transmitter away from these other devices.

The Sennheiser RS 120 ii produces a boost and well-balanced sound from nearly any source.

Users may manually tune into multiple frequency channels thanks to radio high-frequency technology. Furthermore, with a frequency of 900 MHz, you may be confident that you will not interfere with other channels. In terms of sound and quality, RF technology is comparable to infrared technology. It can’t go back and forth between channels as Bluetooth devices can.

With its clear and strong bass response, you’ll surely enjoy every moment when you’re listening to your favorite music with its great sound quality. You can find the volume and tuning dial on the headphone.


It contains a volume and transmission setting control and an on/off switch. There are no controls on the base station. If you put the headphones on the transmitter base, they are automatically charged, and an LED light indicates the charging state. You can adjust the reception with the built-in transmitter control and adjust the volume with the volume control.


You can use this wireless headphone with any analog audio output device, such as tablets, phones, televisions, computers, or audio components that have an RCA jack audio output port or a 6.3mm or 3.5mm headset jack.

What’s inside the box?

  • TR 120 transmitter (audio cable is attached you can use to connect to the headphone jack)
  • Transmitter power cord (in a small white box- it’s there, trust us)
  • (2) AAA NiMH rechargeable batteries
  • RCA to 1/8″ Audio Adapter
  • 1/8″ to 1/4″ Audio Adapter
  • Instructions for use


These headphones are very comfortable. I have read some reviews that they’re bulky and uncomfortable to wear. But I doubt that because I’m very satisfied with my RS 120 II. The price is reasonable. The Voice clarity of this product is fantastic. Listen to music or use it to watch TV shows you love.

Wireless Headphones Common Questions

What are the pros and cons of RS 120 II?


  • Excellent sound quality.
  • Lightweight and very comfortable.
  • Built-in volume control.
  • A recharging system with AAA NiMH batteries.


  • Connectivity: Not compatible with Bluetooth devices.
  • The Sennheiser RS 120 is not noise-canceling headphones, and you may be hearing the sound from the outside, for example, the background noise of a vacuum cleaner.

In Conclusion

The Sennheiser RS 120 ii over-ear wireless headphone allows you to enjoy your favorite music wirelessly! The sound quality is excellent, and the features and comfort are awesome. They’re dependable, and they’re designed to last for months. The main drawback appears to be that the tuning and volume settings are too close together, aside from the hissing noise, which may be readily avoided. Additionally, for a wireless model, this headphone is incredibly inexpensive.

Product Comparison

rs 120 ii vs rs 120
rs 120 ii vs rs 170

  • Sennheiser RS 120 II Headphone

  • DimensionDimension
  • WeightWeight
  • BatteryBattery
  • Battery LifeBattery Life
  • CableCable
  • Charging TimeCharging Time
  • ManufacturerManufacturer
  • OriginOrigin
  • PricePrice

  • Dimension85 x 225 x 133 mm
  • WeightReceiver: 230 g (including batteries)
    Transmitter: 200 g
  • Battery2 x AAA NiMH Rechargeable Batteries
  • Battery LifeIn use: Up to 20 hours
  • CableIncluded
  • Charging Time18 hours
  • ManufacturerSennheiser
  • OriginGermany
  • Price$$ is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to

Sennheiser RS 120 II Headphone













  • Very comfy and a price isn’t that high.
  • Noise cancellation is good, you can only hear a little background noise.
  • Since the hardware is analog, you won’t experience any lag.

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