Sennheiser MD421 Review – Invaluable and Versatile!

Are you bored with your current lower-end dynamic microphone? Looking around for another model that would be a step up from your current ones? Then you have come to the right place. Cheap dynamic microphones might be able to last you a while, but after some years, you will surely need something better. Hence, in today’s Sennheiser MD421 Review, you will find the perfect choice!

Product OverviewMD421

More accurately known as Sennheiser MD421 II, this legendary microphone continues the tradition of the original MD421, which has been a world famous dynamic microphone by Sennheiser for over 35 years. This microphone have been used in countless highly acclaimed music productions worldwide, both in the studio and also in live sound applications.

The Sennheiser MD421 is very well known among audio professionals everywhere, as a microphone that is capable of producing excellent sound quality and also being versatile in terms of its application. It is designed to be suitable for the most diverse recording situations and broadcasting requirements. Together with a solid and durable body construction, the MD421 is an invaluable asset.

Primary Specifications

  • Frequency response of 30Hz to 17000Hz
  • Uses an XLR 3-point connector
  • Overall weight of 385g
  • Nominal impedance of 200 Ohm
  • Five position bass “roll-off” switch
  • 3/8″ microphone clamp included

Now let us look at the various major features, that makes the MD421 a quality microphone!

Versatility and QualityBass amp

If you are planning to use the Sennheiser MD421 to record an array of different instruments, then you don’t have to worry, as the MD421 will fulfil this function faithfully. The large diaphragm, dynamic element of the MD421 allows it to handle high sound pressure levels, for example from an electric guitar amplifier, and also makes it inherently suitable for the recording of drums and percussions.

The Sennheiser MD421 is also known to be able to produce a very clear sound, which makes it an excellent choice for radio broadcast announcers and for various vocal recording applications. The extent of the possible sound recording uses with this microphone is almost limitless. With enough experimenting of the positioning for the Sennheiser MD421, getting a great sound quality will surely be possible.

Isolation and ParametersCardioid pickup

The Sennheiser MD421 does not only performs exceptionally well in a studio environment, but it can also be utilized in a live sound situation. This microphone is trusted among many live sound engineers and technicians worldwide, due to its outstanding sound isolation capability. This is made possible with its full-bodied cardioid pickup pattern, which also allows excellent feedback rejection.

Bass roll offThe MD421 is also designed to include a five-position bass “roll-off” parameter, which allows you the flexibility of cutting the desired amount of low-frequency response that is produced by the microphone. This is especially useful for recording engineers who want to have a more precise frequency response out of the original recording, without having to do too much post-recording editing.

Construction and Accessories

A very important aspect of any dynamic microphone that buyers will look for, is its construction quality. This is especially crucial for live sound engineers who might want to bring their favourite microphones around for every live show, and the MD421 will not disappoint in this respect. The superb solid body construction can easily be recognized, the moment you hold it in your hands.


When you purchase a Sennheiser MD421 microphone, it comes with some very valuable accessories. First, is the MD421 protective case, that will ensure your microphone stays in good shape even when you need to travel around with it. Second, is the microphone clamp (for 3/8″ clamp) that is unique to the MD421 design, and will provide a secure hold over the microphone, when used for recording.

Here’s a great video showing the sound quality of the MD421!

Now let us look at the summary of pros and cons for the Sennheiser MD421 Dynamic microphone.

Pros and Cons


  • Versatile in its application
  • Clear sound quality
  • Rugged body construction
  • Superb sound isolation
  • Useful bass “roll-off” parameter
  • Comes with a hard-case
  •  Great value for money


  • Needs to be positioned very closely to sound source for the best sound quality
  • Bass “roll-off” function may be a little confusing to use at first


I have used the Sennheiser MD421 dynamic microphone extensively in studio recording, and have grown to love it over the years. I personally prefer to use it with electric guitar and bass amplifiers as it has an excellent mid-range frequency response, that is crucial for guitar and bass tones. The MD421 has a considerably high “pick-up” strength, making it also suitable for Foley work.

The price point does seem to be significantly higher than other dynamic microphones, however I still feel its a very good investment to make for any home or professional recording studios. If you are looking for a quality, “industry standard” microphone that is pretty much indispensable, than the MD421 is the perfect choice. With its durable construction and superb sound quality, there is no reason not to have one!

Thank you for reading this review. Do leave questions or comments below and share this post if you like!



When I'm not rocking out to great music, I'd prefer to be sleeping on a field on a windy day =)


  1. That looks like a very high quality microphone. And so the price is quite high in my budget. I bought my first microphone and sound card for almost $500 and then I didn’t use them for two years. :D.

    Do the prices of the microphones go usually down over the time? In the cameras and PCs the price goes down but in many musical instruments the price doesn’t go down. How about microphones? For example how much this microphone cost before?

    • Hello Roope!

      Thanks for reading my review. It is unfortunate that this microphone is above your budget, but do check out some of my other microphone reviews if you are ever interested.

      Prices of microphones do not go down as much as other IT products. This is the same for the majority of other audio equipment out there. However, music stores do give a promotion every now and then, to products that have been on the shelves for a while, and needs to be cleared out.

      Cheers =)

  2. Enjoyed reading your content on the microphone. I have never had a microphone before but I guess I don’t need it as don’t do anything that would need one.
    But I can tell it is a really good microphone to have for recording musical instruments. I would defiantly go for this one if I started up a career in music.
    Well written review

    • Hey there Jenny!

      Its awesome to know that this review has somewhat been beneficial to you. If you ever need help or have more questions in the future, do come back!

      Thanks a lot!

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