Gearank

According to AKG, the K240 Studio is their most popular model.

While the original K240 was created in 1975, it has gone through many minor revisions before branching out into the K240 MKII and the K240 Studio.

Both models are very similar. The MKII has a different aesthetic and has additional accessories but the Lower-priced "Studio Model" without the fancy accoutrements edges out it's more expensive sibling.

Specifications

• Type: Semi-open back
• Driver Size: 30mm
• Magnet Type: Not Specified
• Frequency Response: 15 - 25000 Hz
• Maximum Input Power: 200 mW
• Sensitivity: 104 dB SPL/V
• Impedance: 55 Ohms
• Weight: 9.52 oz.
• Cable and Connectivity: 3m cable. Stereo plug – 3.5mm (1/8-inch) with 6.3 mm (1/4”) screw-on adapter
• Best For: Mixing, Mastering

Pros

Gathering multiple responses from users, we found that engineers enjoyed the smooth top end and clarity of the midrange frequencies that balance between too scooped and too boxy. The light weight also makes them great for long mixing sessions.

Cons

Not enough bass thump according to some users. Others disliked the lack of isolation which makes them less than optimal for tracking. Both cons are because of the semi-open back design. The headband also took a bit of getting used to for several users.

Overall

The K240 design has been around for decades. The latest incarnation in the very affordable K240 studio brings together time-tested engineering with modern materials. If you can live without the fancy bells and whistles of it's more expensive (but nearly identical) brother the MKII, the Studio version rewards you with incredible midrange clarity and fast transient response.

Although these were previously on our recommended list, there are now more highly rated options available which you can see in our guide to The Best Studio Headphones.