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Sennheiser PC-121

alaTest has collected and analyzed 71 reviews of Sennheiser PC-121. The average rating for this product is 4.0/5, compared to an average rating of 4.0/5 for other Headphones for all reviews. Opinions about the durability and usability are on the whole positive. The price and portability are also appreciated. There are some less positive reviews about the reliability and design.

sound, portability, price, usability, durability

design, reliability

We analyzed user and expert ratings, product age and more factors. Compared to other Headphones the Sennheiser PC-121 is awarded an overall alaScore™ of 75/100 = Good quality.

Review analysis

(Based on 71 reviews)

Expert Reviews  

User Reviews  

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Showing 1 - 42 of 50 Show Reviews: in English | in other languages (21)

Consumer review by: ( review summary for Sennheiser PC-121


alaTest has collected and analyzed 14 user reviews of Sennheiser PC-121 from The average user rating for this product is 3.3/5, compared to an average user rating of 4.0/5 for other Headphones on People really like the size and microphone. The usability and comfort are also mentioned favorably. Views are divided on the portability.

sound, comfort, usability, microphone, size

64% of the reviews on give this product a positive rating.

This summary is based on the products: Sennheiser PC 121 - In-Ear Monaural HeadsetSennheiser PC 121 SKYPE IN-EAR HEADSETSennheiser PC 121 - Headset ( in-ear ear-bud (with over-the-ear mount) )

Feb, 2016

Consumer review by: ( review summary for Sennheiser PC-121


alaTest has collected and analyzed 18 user reviews of Sennheiser PC-121 from The average user rating for this product is 3.7/5, compared to an average user rating of 3.9/5 for other Headphones on Reviewers are impressed by the microphone and usability. The price and sound are also appreciated. Views about the comfort and design are mixed. Many are critical about the size and reliability.

portability, sound, price, usability, microphone

reliability, size

78% of the reviews on give this product a positive rating.

This summary is based on the product: Sennheiser PC121 In-Ear Mono-Aural Headset

Feb, 2016

Expert review by: staff (

Sennheiser PC121 review


An affordable and portable audio headset

Comfortable ; Good quality sound ; Inexpensive

A good-quality headset for a good price

Aug, 2007

Consumer review by: itspreach (

Very good


I'm happy with this item. It works well, but perhaps the mic is a little /too/ sensitive. When I'm using voice-activated, as opposed to PTT, I have to turn the sensitivity down in my app to it's lowest setting in order to not pick up all background...

low profile ; good sound ; good mic ; in-line controls ; short mic

not wireless ;) ; mic is maybe a little too sensitive

Oct, 2013

Consumer review by: Offbound (

senheiser head set


I wish senhesier manufactured a wireless version of this

Fantastic product in any field and level

Cable gets tangled

Feb, 2013

Consumer review by: N/A (

Worth the USB to Micro alone


Dont buy it for the mSD card, its hardly worth it anymore considering its size but the adapter is almost perfect.

I bought this 4 years ago from a different retailer when i saw the MicroSD to USB adapter just for that. Still works perfectly and I don't need to dedicate a drive bay to pointless flash media drives ill never use. Personally i find it invaluable as i...

4 gigs? Really ; Can be moderately difficult to get the mSD card back out of the USB stick if you dont keep decent length finger nails

Nov, 2012

Consumer review by: N/A (

Does its job well


Nifty USB adapter and size adapters, too!

Used this little card to upgrade my Sansa clip 4GB. Very simply upgraded capacity to 8GB


Dec, 2011

Consumer review by: HaroldS (

Best phone headset I've had so far


The 2.5mm cables seem just a touch fragile, the cable sheathing/insulation is very lightweight/malleable which is great for comfort fit and handling but will it be tough enough to withstand normal desk usage of pulling in and out of jacks..

Tiny, practically weightless, and sleek-looking .. can plug into multiple computers AND the 2.5mm jack on my VOIP phones. Sound quality is first rate, others say I sound great on same system I used other headsets with negative comments. Once in...

I have small ear canal so earbud does not sit inside my ear, a bit uncomfortable to put on and get into position. The ear clip goes above the ear, which hits my glasses.. the earclip on my other Plantronics phones fit under the ear (great great design)...

Mar, 2011

Consumer review by: wun09 (

Just an average wired headset


Nothing special, just average. Could be cheaper since it doesn't do anything special.

Jun, 2013

Consumer review by: Robert521 (

great for this price


I like this earphone. I need this for use in public places (like Starbucks store etc..) So design is important to me...

Jan, 2013

Consumer review by: mark (

Great product!


Works like a champ for my new iphone 4s

Durable,Easy Controls,Lightweight

Oct, 2011

Consumer review by: icerano (

Great for any mobile device !


Best mounting device I have used yet. Very sturdy, simple to mount, and versatle for mounting on windshield or dashboard. The bracket arms open and adjust easily and with precision!

Durable,Easy Controls,Lightweight

Sep, 2011

Product Specifications


Display: No
Integrated Amplifier: No
LCD Display: No
Microphone Boom Arm: No
Multi Compatible Gaming Function: No
Mute Control: Yes
Noise Cancellation: No
Sound System:Mono
Switchbox from Telephone to Headset: No
Volume Control: Yes


Bluetooth: No
Connection:3.5 mm Plug
USB Dongle: No

General Features

Compatibility:for 4 and more brands
Form factor:Over the Ear Headset
Product Type:Over the Ear Headset
Type:Over the Ear