In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. Love the sound of AKG K240M's but can't get enough VOLUME out of them? Then the K-240 STUDIO headphones are what you are looking for! The K-240 Studio headphones have an impedance that is matched to todays "studio in a box" products, as well as inexpensive headphone amplifiers, compact mixers, and keyboard products. Prepare to get your head blown off with great sound, and TONS of volume. AKG- Just SOUNDS better...