What makes semi-open headphones better for mixing than fully closed designs?

Semi-open designs like the K240 MKII provide natural airflow and a more spacious soundstage, reducing ear fatigue during long sessions while delivering the revealing accuracy needed for critical listening. They also help prevent the claustrophobic feeling and bass buildup that can occur with fully closed headphones, making your mix translation more honest.

Can I use these with both my audio interface and portable devices?

Yes. The K240 MKII feature 55 Ω impedance and 200 mW maximum input power, which means they work reliably with both professional audio interfaces and portable devices. The package includes 3.5mm and 1/4" jack adapters, plus a 3m straight cable and 5m coiled cable for flexible studio setup.

How do the K240 MKII compare to other budget studio headphones?

The K240 MKII sit alongside the Audio-Technica ATH-M50x and Beyerdynamic DT 990 Pro in the budget reference monitor space. They offer a slightly brighter, more detailed midrange and extended highs, making them especially valuable for work where revealing subtle vocal and instrumental nuances is critical.

Are these comfortable for marathon studio sessions?

Yes. The self-adjusting headband and combination of leatherette and velvet earpads are designed specifically for extended wear without fatigue. The semi-open design also allows air circulation, further reducing discomfort during long mixing and mastering work.

What frequency response range do the K240 MKII cover?

They deliver 15 Hz to 25 kHz frequency response with a maximum SPL of 104 dB/V, providing the headroom and tonal accuracy you need for professional tracking, mixing, and mastering applications.

AKG K240 MKII Professional Studio Headphones

The AKG K240 MKII cuts through the noise with a balanced, transparent sound that lets you hear exactly what's happening in your mix—no flattery, no coloration. The semi-open circumaural design breathes naturally, keeping your ears fresh during those all-night recording and mixing sessions, while the comfortable fit means you can focus on the music instead of adjusting headphones. These are the headphones serious tracking engineers and mixing professionals rely on when accuracy and honest feedback matter most.

Audio Performance

The 30 mm XXL transducers with patented Varimotion diaphragms deliver punchy, detailed mids and extended highs that reveal exactly what your vocals, guitars, drums, and synths are doing in the mix—catching the flaws and the magic in equal measure. With a frequency response of 15 Hz – 25 kHz and maximum SPL of 104 dB/V, you get the dynamic headroom to track loud sources and the precision to catch every detail during critical listening and mixing passes.

Design & Build

The self-adjusting headband and leatherette/velvet earpads lock in securely without fatigue, so you can track, mix, and overdub for hours without distraction. The 55 Ω impedance and 200 mW maximum input power rating play nicely with both portable audio interfaces and full-size mixing consoles, making these headphones versatile whether you're tracking at home or in a professional studio. Gold-plated connectors on the detachable cables stay corrosion-free and deliver bulletproof signal integrity night after night.

Key Features

Over-ear, semi-open circumaural design
30 mm XXL transducers with patented Varimotion diaphragms
Frequency response: 15 Hz – 25 kHz
55 Ω impedance
Maximum SPL: 104 dB SPL/V
Maximum input power: 200 mW
Self-adjusting headband with leatherette and velvet earpads
Professional mini XLR connector with 3.5mm and 1/4" jack adapters
Detachable cables: 3m straight and 5m coiled
Gold-plated connectors
Dimensions: 4.50" W × 4.40" H × 9.00" D

The K240 MKII remains the reliable reference tool for tracking and mixing musicians and engineers who refuse to compromise on accuracy and need headphones that tell the truth about their recordings without breaking the bank.