AKG K240STUDIO Semi-Open Studio Headphones
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AI Verdict
The AKG K240 Studio is a $50 semi-open analytical tool for home producers who need flat, honest mids and don't care about sub-bass or sound isolation.
These are purpose-built studio tools, not casual listening headphones. The semi-open back and steep sub-bass roll-off make them perfect for analyzing mid-range frequencies in a quiet room, but terrible for noisy environments or bass-heavy music.
If you need to track vocals without mic bleed or want actual sub-bass, switch to a closed-back pair like the Sony MDR-7506.
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Pros
- 30mm XXL transducers deliver a flat, analytical mid-range that exposes flaws in vocal tracks.
- Removable mini-XLR cable means a $15 replacement fixes the most common point of failure.
- At just 8.5 ounces with a self-adjusting headband, they disappear on your head during 4-hour editing sessions.
- Semi-open design creates a wider soundstage than closed-back alternatives like the ATH-M40x.
Cons
- Sub-bass rolls off steeply below 60Hz, making them useless for mixing EDM or hip-hop.
- Zero noise isolation—your mic will pick up click tracks and your roommates will hear your music.
- Vinyl ear pads get sweaty after an hour and crack after a few years of daily use.
- 55-ohm impedance and 90 dB sensitivity means they sound quiet and thin plugged directly into a laptop jack.
Dimension Scores
Incredible mid-range clarity and vocal reproduction, but completely lacks sub-bass extension below 60Hz.
The semi-open vents intentionally let all outside noise in and leak your audio out.
The 8.5-ounce weight is fantastic, but the stiff vinyl pads trap heat and the ear cups are quite shallow.
Passive wired 3.5mm design means infinite runtime with zero battery degradation.
Best For
- Editing podcasts or dialogue in a quiet home office.
- Tracking acoustic guitars and vocals where mid-range accuracy is critical.
- Budget-conscious home studio setups paired with a dedicated USB audio interface.
Not Recommended For
- Commuting on a bus or working in a shared office space.
- Producing bass-heavy genres like trap, EDM, or cinematic scores.
- Recording vocals in the same room as a sensitive condenser mic due to sound leakage.
Watch Out For
- The 3-meter straight cable is a tripping hazard at a standard desk—you will want to buy a shorter aftermarket mini-XLR cable immediately.
- The self-adjusting headband relies on thin elastic bands that stretch out and lose tension after a couple of years.
- They require more power than the 55-ohm spec suggests; plugging them straight into a phone yields a flat, lifeless sound.
- The stock vinyl ear pads are shallow and stiff, causing the hard plastic driver covers to press directly against larger ears.
Full Specifications
| UPC | 885038026730 |
| ASIN | B0001ARCFA |
| Size | One Size |
| Brand | AKG |
| Color | Gold |
| Style | Over Ear Headphones |
| Units | 1.0 Count |
| Wattage | 200 Milliwatts |
| Material | Stainless Steel |
| Impedance | 55 Ohms |
| Color Name | Gold |
| Model Name | K240 STUDIO |
| Form Factor | Over Ear |
| Item Weight | 8.5 ounces |
| Sensitivity | 104 dB |
| Color Screen | No |
| Control Type | Call Control |
| Manufacturer | AKG |
| Cable Feature | Detachable |
| Ear Placement | Over Ear |
| Material Type | Stainless Steel |
| Noise Control | None |
| Connector Type | plug-in |
| Control Method | Remote |
| Earpiece Shape | Rounded |
| Controller Type | Wired |
| Headphones Jack | 3.5 mm;6.3 mm |
| Number of Items | 1 |
| Special Feature | Detachable Cable |
| Audio Driver Type | Dynamic Driver |
| Hardware Platform | PC |
| Item model number | K240STUDIO |
| Compatible Devices | Laptops, Desktops, Music Production Equipment, Tablets, Cellphones, Telephones |
| Frequency Response | 28000 Hz |
| Hardware Interface | 1/4-inch Audio |
| Product Dimensions | 8.8 x 9.2 x 4.3 inches |
| Included Components | 3 meter (10 feet) cable with stereo 3.5 mm (1/8") connector, 6.3 mm (1/4") screw-on adapter, K240 Studio Headphones |
| Customer Package Type | Standard Packaging |
| Input Device Interface | Audio jack |
| Water Resistance Level | Not Water Resistant |
| Age Range (Description) | All |
| Connectivity Technology | Wired |
| Mac System Requirements | pc |
| Unix System Requirements | pc |
| Linux System Requirements | pc |
| Specific Uses For Product | Audiophile, DJ and Studio, Music Listening |
| Windows System Requirements | pc |
| Recommended Uses For Product | Music |
| Supports Bluetooth Technology | No |
| Is Discontinued By Manufacturer | No |
| Global Trade Identification Number | 08032182450344, 09002761005950, 09002761026733 |
What Buyers Say
The biggest shock for first-time buyers is how power-hungry these 55-ohm headphones actually are. Plug them into a MacBook and they sound anemic; plug them into a Focusrite Scarlett interface and the mid-range suddenly snaps into sharp focus. The all-plastic build feels alarmingly cheap out of the box, yet studio engineers report tossing them into gear bags for a decade without breaking the drivers. The stock 3-meter cable is comically long for laptop use, constantly rolling under desk chair wheels. The vinyl ear pads are the weakest link, trapping sweat and hardening into stiff pucks after a year of daily wear.
“I bought these for mixing my podcast and the mids are crystal clear but my god the 10 foot cable gets stuck in my chair wheels every single day and my ears are sweating after 45 minutes.”
Common Praise
- Vocals and acoustic guitars sit perfectly in the mix without getting muddied by bloated mid-bass.
- The 8.5-ounce featherlight plastic frame prevents the top-of-head hot spots common with heavier studio cans.
- Mini-XLR connector locks securely and makes replacing a dead cable a 10-second job.
- Semi-open vents create a natural, airy soundstage that prevents ear fatigue during marathon editing sessions.
Common Complaints
- Sub-bass drops off a cliff below 60Hz, making kick drums sound like cardboard boxes.
- The stock vinyl ear pads are extremely shallow, causing the hard plastic driver grill to rub against the ear.
- Elastic tensioners on the headband stretch out over time, causing the ear cups to sag down your jaw.
- Zero isolation means the microphone picks up the click track bleeding from the ear cups during vocal takes.
Ownership Tips
- The vinyl ear pads will physically harden and crack after 18-24 months of absorbing skin oils.
- The gold lettering on the ear cups rubs off completely after a few months of handling.
- Swapping to aftermarket velour pads improves comfort drastically but slightly reduces the already-weak bass response.
Frequently Asked Questions
Do these need an amp?
Yes, despite the 55-ohm rating, their low sensitivity means they sound quiet and hollow out of a standard headphone jack. An entry-level USB audio interface or cheap headphone amp wakes them up.
Can I use these for gaming?
The semi-open design provides excellent directional imaging for footsteps. You won't get any cinematic rumble from explosions due to the lack of sub-bass.
Do they leak a lot of sound?
Yes, anyone sitting within 10 feet of you will hear exactly what you are listening to. Do not buy these for the office or the bus.
Are the ear pads replaceable?
Yes, they slip right off. Swapping the stock vinyl pads for aftermarket velour pads is a highly recommended $15 upgrade for better comfort.
Does the cable detach?
Yes, it uses a standard 3-pin mini-XLR connector at the left ear cup. You can easily swap the included 10-foot cable for a shorter one.
Buying Guide
You are buying a highly specific audio tool, not a pair of fun consumer headphones. The semi-open design means you will hear your AC unit running, and your roommate will hear your music. Do not buy these expecting skull-rattling bass; they are tuned flat to expose flaws in vocal and instrumental tracks. You need to plug these into a dedicated audio interface or a headphone amplifier to get the proper volume and dynamic range. Plan to spend an extra $15 on a shorter mini-XLR cable if you are just sitting at a laptop.
Semi-Open Back
The ear cups have physical vents that let air and sound pass through. It makes music sound like it's playing in the room around you rather than trapped inside your skull, but it ruins any chance of blocking out background noise.
55 Ohms Impedance / 90 dB Sensitivity
This tells you how much electrical juice the headphones need to get loud. While 55 ohms seems low, the low sensitivity means your phone's headphone jack will struggle to push enough power, resulting in a quiet, hollow sound.
Mini-XLR Cable Connection
Instead of a cable permanently wired into the ear cup, it uses a 3-pin locking plug. If your cat chews through the wire, you just buy a new wire instead of throwing the whole headset in the trash.
Alternatives
If you need deep sub-bass for electronic music or closed-back isolation to prevent mic bleed, search for closed-back studio monitors with 40mm drivers and a V-shaped sound signature.
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