AKG

AKG K240 MKII Stereo Studio Headphones Renewed

5.0 (1 reviews)

Semi-open studio reference headphones with a 30mm Varimotion driver tuned for accurate monitoring across the full frequency range.

$89.99*$121.41Save 25%
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The AKG K240 MKII is a semi-open, over-ear studio headphone built around AKG's patented Varimotion 30mm XXL transducer — a single dynamic driver with a variable-thickness diaphragm engineered to deliver extended high-frequency response from its thin outer edges and controlled low-frequency output from its reinforced center. At 55 ohms impedance, the K240 MKII sits in an accessible range that most audio interfaces, mixers, and headphone outputs can drive to working volume without a dedicated amplifier, though adding one improves dynamic headroom. The semi-open acoustic design allows controlled airflow behind the driver, producing a wider and more natural soundstage than closed-back alternatives — a meaningful advantage for mixing and critical listening where spatial accuracy matters.

This headphone has been an industry reference for over two decades, and the MKII revision refined the original with a detachable mini-XLR cable system (shipping with both straight and coiled options), updated velour and leatherette ear pads, and a self-adjusting headband that removes the need for manual size adjustment. It is designed for extended studio sessions — mixing, editing, mastering, and broadcast monitoring — where comfort and tonal neutrality take priority over noise isolation. The semi-open leakage means these are monitoring headphones, not tracking headphones; keep them at the mixing desk, not on a vocalist. This renewed listing delivers the same driver and build at a reduced price point, making the K240 MKII's reference-grade voicing accessible to home studios and budget-conscious professionals.

Key Features

Over-ear designfor comfort during long work sessions

Semi-open technologyfor solid bass and airy highs

Patented Varimotion 30 mm XXL transducerfor accurate signal transfer and great dynamic range

Self-adjusting headbandfor optimum fit

The choice of professionals around the worldstage and studio standard for more than two decades

Specifications

Brand
AKG
Model
K240 MKII
Condition
Renewed
Design
Semi-Open, Over-Ear
Driver
30mm Varimotion XXL Transducer
Connectivity
Wired (Detachable Mini-XLR)
Cable
Retractable / Detachable
Headband
Self-Adjusting
Form Factor
Over-Ear

Pros & Cons

👍 Pros

  • Semi-open design delivers a natural, spacious soundstage that reveals stereo imaging and mix depth during monitoring
  • 30mm Varimotion XXL diaphragm provides extended frequency response and wide dynamic range from a single driver
  • 55-ohm impedance drives adequately from most interfaces and mixers without requiring a dedicated headphone amplifier
  • Self-adjusting headband distributes weight evenly for comfortable wear across multi-hour mixing sessions
  • Detachable mini-XLR cable system allows field replacement and choice between straight and coiled cables

👎 Cons

  • Semi-open design leaks sound, making these unsuitable for tracking in the same room as a live microphone
  • 30mm driver diameter is smaller than the 40-50mm drivers in competing studio headphones, which limits low-end extension and slam
  • Renewed units may exhibit cosmetic wear and lack the full manufacturer warranty of a new pair
  • Velour ear pads compress over time and require periodic replacement to maintain comfort and seal
  • Lightweight plastic construction in the headband and gimbal feels less durable than metal-frame competitors

Frequently Asked Questions

The semi-open back allows some air exchange, which produces a wider, more natural soundstage compared to closed-back headphones. The trade-off is moderate sound leakage — these are best for studio environments, not tracking vocals with a live mic nearby.
AKG's patented Varimotion diaphragm varies in thickness across its surface — thinner at the edges for extended high-frequency response, thicker at the center for controlled bass. This single-driver design delivers a wider dynamic range than a uniform diaphragm of the same 30mm size.
The K240 MKII is rated at 55 ohms, which is low enough to drive from most audio interfaces, mixers, and even some portable devices at reasonable volume. A dedicated headphone amp will improve dynamics and headroom but is not strictly required.
Renewed means the unit has been inspected, tested, and restored to working condition. It may show minor cosmetic wear. The functional performance — driver response, cable integrity, headband tension — should match a new unit.
Yes. The K240 MKII uses a detachable cable with a mini-XLR connector at the headphone end. AKG and third-party replacement cables are widely available, and the new MKII version ships with both straight and coiled cable options.