AKG K7XX vs Sennheiser HD6XX Headphones Specifications Comparison

In case if you are looking into professional-grade studio monitors, check out our AKG K7XX vs Sennheiser HD6XX open back headphone comparison.

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Related: Best Studio Monitors

Throughout so many years of development, technology has changed the way we live and the way we listen to music. Talking about music, today, we are discussing two of the much popular professional headphones. These headphones take the way you listen to sound to an entirely new level. So, which one suits you the best? Which one fits best in your budget and requirement? Keep on reading to find out. The products we will be talking about today are as follows:

Features Highlights:

Before we jump deep into the details, here are some features highlights for both the devices, put side-by-side so you can compare these headphones with ease. Have a look at the table below:


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Sennheiser HD6XX

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Open back construction

Preselected dynamic transducers

Flat wire voice coil

Varimotion 2 layer diaphragm

Genuine leather headband

Memory foam earpads with a velour covering

Individually tested and numbered

Detachable 9.8 ft (3 m) straight cable

with 1/8 inches (3.5 mm) jack

10 – 39,800 Hz Frequency Response

105 dB/V Sensitivity

200 mW Max input power

62-ohm impedance (rated)

8.3 oz / 235 g weight

Midnight Blue Color

Open, dynamic transducer principle

10 Hz – 41 kHz Frequency Response

Less than 0.05% THD

300-ohm nominal impedance

6 ft (1.8m) cable length

1/8 inch (3.5mm) connector

9.2 oz / 260 g weight (without cable)

Manufactured in Ireland

Package Includes:


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Sennheiser HD6XX

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1/4 inch / 6.33 mm adapter

2 years of serviced warranty by AKG

1/8 – 2/4 inches (3.5 – 6.35mm) adapter

2 years of warranty by Sennheiser

As we can see, AKG K7XX packs a bunch of features more compared to what Sennheiser HD6XX has to offer. However, we should never judge a product, especially the electronic ones based on superficial specifications or “Features” manufacturer says it has to offer. Thus, let’s dig a little bit deeper in various features and how technically it improves the overall quality of these headphones. We hope this discussion will help you to understand both the products correctly so you can choose the best one for you based on your need and expectations. So without any more delay, here we begin:


The AKG K7XX series was launched around two years ago, and it’s been popular as a flagship product since then. With every new version, K7XX has received positive appraisal from quite a lot of our favorite sound critics and reviewers including Head-Fi, Super Best Audio Friends, Z Reviews and a lot more. The AKG K7XX is heavily inspired by the older model AKG K702’s 65th-anniversary edition. This better, upgraded version retains the very same impressive driver technology and with even superior build quality. However, what’s the point of launching the product with the same features as in the previous iteration, right? Thus, AKG K7XX throws away additional updates in overall sound quality and also increases comfort level up to a significant extent.

Soundstage & Frequency Response Enhancements:

As mentioned above, AKG K7XX packs quite a lot of updates related to sound quality, compared to the older AKG K702. It is tweaked a little so that it can deliver a much better frequency response. Moreover, it also provides wide and location-specific soundstage, which helps the listener to feel closer to the source, this feeling is missing in average headsets. With an innovative flat wire voice coil, it boosts the highs and brings the mid to an even better range and balance.

Moreover, it features 3 dB for pump up the lows and delivers amazingly immersive sound imaging. Furthermore, each transducer in the device is tested individually. These units are paired with each other while trying to keep the sound signature as closest as possible. This helps the AKG 7XX to achieve impressive synchronization and balance between all channels.

Detachable Cable & Comfortable Design:

Like most of the headsets produced by this very same manufacturer, comfort is one of the top priority goals, which designing a product. The headband is entirely made of genuine leather, making it quite a lot comfy. Moreover, its self adjusted automatically according to one’s size. Unlike other cheap headsets in the market, the AKG K7XX won’t stress your ears during more extended use periods. These headphones come with memory foam ear pads, allowing it to deliver exceptional comfort. You can wear these for long periods like while traveling without feeling any pressure, discomfort or fatigue on your head or ears.

Traditionally, AKG headphones used to have standard bumps on most of their headbands. We assume it was for a gripping purpose. However, they decided to alter the design and provide a smooth surface instead, in order to improve the comfort. It comes with a 10-foot detachable cable, which is pretty easy to replace if it is required to do so. They decided to move the logs on the inside frame along with the serial number; however that does not make anything different.

Simple yet attractive look:

If you are not into those flashy and extra fancy colors, then this headphone is going to be just perfect for you. The fully back theme gives it a pure essence which does not unnecessarily stands out and mixes up with almost anything you are wearing. Overall, they provide a simple, casual look while keeping the sound quality high at the professional level, just perfect.

Sennheiser HD 6XX:

As a headphone manufacturer, Sennheiser is pretty famous for their Sennheiser HD 650. It was their flagship product for almost 6+ years from 2003 to 2009. As far as the headphone is considered, the Sennheiser HD 650 was a great product, highly praised for the impressive level of details Sennheiser took into consideration. These open back headphones have ruled over our hearts (or say ears) for an extended period. Still, it is considered one of the best headset available under $1000, and it is one of the most talked about product on Head-Fi till date. Sennheiser collaborated with Massdrop to deliver a community-driven design. They came up with an enhanced revision of the popular HD 650, which resulted in Sennheiser HD 6XX. This new version provides the same superior quality and also introduced some updates. Not to forget, the price is pulled down a little as well.

Refreshed feel with design enhancement:

To give the headphone an updated deeper, dark and dramatic feel, Sennheiser replaced the grey theme from HD650 with a deep midnight blue color scheme. To maintain the contrast, fully back nameplates took the place of old silver plates, with silver text fully standing out on black canvas. The logo and serial numbers are placed quite the same way on HD 6XX the way they were on AKG K7XX. Following the ideas provided by the community, it features a 6-foot cable with 1/8 inch plug while the original setup had a 10-foot cord with ¼ inch plug. Most of the users believed that this setup is more comfortable for use and suitable for a variety of applications. However, you can still get a ¼ inch adapter with Sennheiser HD 6XX if you want to.

Classic Sound Quality:

It was pretty surprising how they did not touch the driver structure and sound signature architecture used in HD 6XX. It simply means that this new iteration with maintaining the same balanced midrange and natural bass as its ancestor used to deliver. Compared to older iterations, the HD 6XX will provide a refined experience with less energetic midrange and balanced sound. It carries the same listening experience over multiple sources and genres thanks to the neutral response techniques implemented. Moreover, its response to enhanced sources and amplification is pretty impressive, making it pretty good for any output impedance.

Easy Maintenance:

With bare hands, one can easily disassemble most of the components in HD 6XX. Moreover, they are pretty easy to replace as well. Good news is that most of its parts can be easily replaced with parts from other headphones in the series. Moreover, you get assurance from Sennheiser for long term support backed by rich aftermarket for modification and gear matching components.

Poor Outdoor Performance?

As they come in open back design, the HD 6XX will not isolate the listener from external noise. Moreover, it is pretty possible that inner sound will be leaked a bit in the outside environment. Thus, they are best considered in a quiet environment such as house and office, etc. (why would I even want to use headphones in such places which are already quite enough?)


Both of these headphones come under the same price bracket. However, as we can conclude from these features and specs, AKG K7XX overshadows the HD 6XX up to some extent, let it be comfort or quality. We believe that in their quest of retaining the classic feel, Sennheiser somewhere missed the opportunity to evolve their product further as AKG did. However, we will leave it up to you to the device which one is the best among these two headphones.

We hope this post helps you to choose the right product for yourself. For any question or confusion, feel free to comment down below or contact us directly. Subscribe to Face of IT if you would love to receive tech updates like this straight to your inbox. Thank you, see you until the next post!

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