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Carsten Kaiser

Dr Carsten Kaiser holds a PhD in musicology and a Master’s degree in sociology. His doctoral thesis examined the digital transformation of music equipment – from analogue through digital to artificial intelligence. He is the author of the standard reference work *Homerecording* and, as an audio producer, has released well over 1,000 tracks. Kaiser also completed a course in jazz singing at the Glen Buschmann Jazz Academy in Dortmund and attended the Conservatoire at Hogeschool Enschede (NL).

Article from Carsten Kaiser:

Sennheiser HD 400 Pro

5 years ago Carsten Kaiser

Sennheiser HD 400 Pro

4.1 / 5

The Sennheiser HD 400 Pro expands the professional range of the HD series with an open model. These new over-ears impressed us with an easy-going, warm sound, high wearing comfort and uncomplicated handling. However, if you are expecting a proper analytical tool, you may be disappointed. We take a very close look at what this model, advertised as a pair of reference headphones, has to offer in practice.

Austrian Audio Hi-X25BT

5 years ago Carsten Kaiser

Austrian Audio Hi-X25BT

3.9 / 5

The Austrian Audio Hi-X25BT are closed, circumaural Bluetooth headphones that aim to combine professional sound and wireless everyday use. In terms of sound, they are supposed to deliver precise sound down to the lowest frequency ranges with their High Excursion technology. In our practical test, we will find out if they succeed.

Austrian Audio Hi-X15

5 years ago Carsten Kaiser

Austrian Audio Hi-X15

3.8 / 5

Austrian Audio aim to make the sound quality of their headphones available to those with smaller budgets with their Hi-X15. Our review investigates whether buyers will need to make compromises in terms of package, technology, handling or sound. After all, the name alone promises to put these headphones in the same league as their considerably more expensive big brothers. So it's going to be exciting...

5 years ago Carsten Kaiser

Audeze Euclid

3.9 / 5

The Audeze Euclid bring technology from Audeze's over-ear headphones to the in-ear format, delivering richly detailed, differentiated sound.

Ultrasone Signature Master

5 years ago Carsten Kaiser

Ultrasone Signature Master

4 / 5

The Ultrasone Signature Master from the Bavarian manufacturer Ultrasone are high-quality mixing and mastering headphones with very good handling. For just under 1,000 euros, you get a pair of headphones that can be used in a variety of ways, with high-resolution and a unique sound profile.

Beyerdynamic DT 700 Pro X

5 years ago Carsten Kaiser

Beyerdynamic DT 700 Pro X

4.4 / 5

The new Beyerdynamic DT 700 Pro X are analytical closed headphones. Their modern over-ear design is well-made and comfortable to wear. In addition to a restrained bass range, open trebles and cool, differentiated mids characterise the sound of this model. Guitar music, in particular, benefits from this. Thanks to their good damping values, these studio headphones are ideal for use when recording but also for mixing and editing on the move.

Beyerdynamic DT 900 Pro X

5 years ago Carsten Kaiser

Beyerdynamic DT 900 Pro X

4.4 / 5

The new Beyerdynamic DT 900 Pro X are over-ear headphones that offer great sonic transparency. They deliver a treble-emphasised signal, which in the mids sounds rather cold and sober and unobtrusive in the basses. These open headphones are particularly suitable as a means of isolating subtle nuances in sound in audio processing and mixing. The DT 900 Pro X Sound also offer purists and hi-fi fans a good headphone for classical, jazz and other acoustic music.

Razer Opus X

5 years ago Carsten Kaiser

Razer Opus X

3.9 / 5

As the smaller version of the Razer Opus, the Razer Opus X aims to offer roughly comparable quality for a significantly lower budget. But how do they manage to achieve this?

Audeze LCD-2 Classic Closed Back

5 years ago Carsten Kaiser

Audeze LCD-2 Classic Closed Back

4.1 / 5

Audeze has long been known for high-quality headphones that offer the finest sound and workmanship. The closed-back version of the LCD-2 Classic is squarely in line with this, and as an extension of the LCD-2 aims to inspire us with a contemporary tool for music enjoyment with all the warm sound and great dynamics of classic Audeze models.

Sendy Audio Aiva

5 years ago Carsten Kaiser

Sendy Audio Aiva

4.1 / 5

With the Aiva, Sendy Audio present a pair of open, circumaural headphones at the upper end of the price range. This manufacturer has worked on fine-tuning these headphones over a period of three years, targeting and optimising even the smallest part. We were therefore looking forward to seeing how these planar-magnetic headphones performed in our test.

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