The AKG K240 MKII are semi-open, critical listening headphones with an above-average sound. They're comfortable to wear and deliver an immersive audio reproduction. Unfortunately, they're not the most versatile headphones. They perform poorly in loud environments and their bulky, cumbersome build is a bit unstable on the head.
- Above-average audio reproduction.
- Lightweight and comfortable design.
- Very sensitive to ambient noise.
- High leakage.
The AKG K240 MKII have the typical look and feel of the AKG K series. They have semi-open, circular ear cups and a retro headband design that creates a comfortable listening experience. However, the materials used in their build feels considerably cheaper than the K701 or K702. They're also not the most practical headphones. They're big and bulky and do not come with a case or pouch. They will also fall if you tilt your head too far back, so they won't be the ideal headphones to use while doing sports.
The K240 MKII have a similar design to the rest of the K series. They keep the familiar old-school headband and circular ear cups, but the materials used in this build do not feel as premium as those used on the K702 and K712 PRO. They also have a pretty bland color scheme, but the understated look may work for some. Overall these are decent looking headphones, but they feel a bit cheap.
The K240 MKII have a pretty comfortable design. They're quite lightweight for their size and they're not too tight on the the head. Also the ear cups are sufficiently well padded that they won't cause any soreness during long listening sessions. However, the circular shape and size of the ear cups do not always fit well around larger ears. Also, the lack of padding on the headband slightly decreases their comfort level but isn't particularly noticeable once you have the headphones on.
These headphones are not designed to provide a stable fit during physical activity. The slack headband isn't too tight on the head, which is good for comfort but unfortunately, makes the fit unstable in most situations. They're a little bulky and cumbersome and will fall if you tilt your head too far back during casual listening sessions. Therefore they won't be good headphones to exercise with. The cable is detachable but locks into the ear cups, so it will still yank the headphones off your head if hooked on something.
The K240 MKII are not portable headphones. They have a bulky design that doesn't fold or have ear cups that lay flat to take less space. They will be a hassle to carry around on your person and will only fit into larger bags. They also don't come with a case so keeping them in your bag with other items might not be the best way to transport them.
Decent build quality. The MKII have a similar design to the AKG K701 and K702. They have moderately dense circular ear cups that can survive a couple of drops without being damaged. However, like the rest of the K-series, the headband has a lot of moving parts that will deteriorate over time with regular wear and tear.
The AKG K240 have an above-average and spacious sound but feel a little bass light. The semi-open ear cups gives their audio reproduction a broader Soundstage and lets in as much ambiance as typical open designs. They have a good representation of instruments and vocals but tend to sound a bit sharp and not as clear as some of the other models in the AKG K series. Unfortunately, their bass-range feels a bit lacking even for open headphones.
Decent Bass Range performance. Low-bass is lacking by about 7dB, which is expected of open-ear headphones since they can't rely on a seal to create low-bass. Bass and high-bass however, are overemphasized by a few dBs, adding a bit of excessive punch and warmth to the sound.
Very good Mid Range performance. Low-mid and mid are well-reproduced, although a bit hyped, which tends to muddy up the mix. The dip in high-mid weakens the vocals/leads in relation to the lower instruments, but the effect here will be subtle.
Decent Treble Range performance. Low-treble is a little inconsistent and underemphasized which negatively affects the presence and detail of vocals/leads. The 10dB bump in the sibilance range means these headphones could sound too sharp to those with hypersensitive ears.
- 100% Avg. Std. Deviation
Very good Soundstage. The semi-open-back design of these headphones make them to sound quite open and spacious. They also performed well in our PRTF test, meaning they activate the resonances of pinna similarly to loudspeakers.
Decent Imaging. The amount of phase error in the lower frequencies is a bit high, but the main reason for the deduction in score is the phase mismatch in treble and high-treble which could have a significant effect on the stereo image.
Average harmonic distortion performance. The amount of harmonic distortion in the Treble Range is low, regardless of volume. However, in the Bass and Mid Ranges, the already elevated response gets a bump at higher volumes suggesting these headphones could struggle to keep their clarity under heavy load.
These headphones are semi-open by design, which means they won't be the ideal headphones to block the ambient noise of loud environments. They immerse you within your surroundings, which helps their sound quality in a quiet room but makes them practically unusable outdoors or while commuting. They also leak quite a bit not as much as fully open headphones but enough to still be distracting to those around you even at lower volumes.
Poor leakage. Although these headphones are marketed as semi-open, their isolation is on par with fully open headphones. They provide no isolation up to 2KHz, and the isolation they achieve above 2KHz is well below average.
Poor leakage. These headphones leak a considerable amount, due to the semi-open-back design. The majority of the leakage is between 500Hz and 10KHz which is a broad range. The level of the leakage is also quite high.
No active features.
No compatible app.
In the box
- AKG K240 MKII Headphones
- 1/8" to 1/4" Adapter
- Ear-cup cushions (x2)
- Audio cable (x2)