Fold. While both headphones fold in the same way, the SRH440’s ear-cups cannot rotate inward while the 40x’s can.
Indicators. The 440’s make it really easy to tell left from right. There’s both a red indicator for right, and a blue for left. There’s also R and L indicators on the bottom of the headband where it meets the hinge. As for the M40x, there’s only a R and L indicator on the inside of where the headband adjustment mechanism is located.
Cups. The 440’s ear-cups are more oval shaped than the 40x’s.
Comfort. I find the 40x’s pads to be softer and comfier on my ears, while the 440’s actually fit better. The 440’s cups are a lot more rigid however, but might be because they’re more worn in than the 40x’s. The material looks and feels very similar and is likely protein or faux leather.
Material. While both are primarily made of plastic, the headband mechanism for the 40x’s is metal, and feels a little more solid than the all plastic of the 440.
Wires. The 440’s have that thin wiring on both sides sticking out, while the 40x’s do not.
Cable & Length. The 440’s only come with a coiled cable, while the 40x’s come with both a straight and coiled. The 440’s coiled cable is 3m, while the 40x’s coiled cable is also 3m. The 40x’s straight cable is 3m as well. 3 meters for the win!
Weight. The 40x’s are lighter than the 440’s. 9.6 oz vs. 8.5 oz.
Replacements. The 440’s come with a set of replacement ear-pads while the 40x’s do not. Impedance. The 440 has a 44 Ohm impedance vs. the 35 of the 40x. What is Headphone Impedance?
Sound. Ah, what you really wanted to know. 🙂 There is a distinct difference in sound between these two guys. The 440’s are much brighter than the 40x’s. Dare I say they’re more lively. This does come with a cost, as they will become sibilant at times. What does Sibilant mean? It can simply be too much, and I found myself fatiguing after a short while. As I’ve gotten older, I can’t handle that sizzle like I used to. It was probably all those late nights mixing with the M50’s. 😛 That said, I personally enjoy the sound of the 40x better; there’s a little more bass, but the sound is still very detailed. I like the 440’s, but the treble can be a tad piercing at times. I think they would do better in mixing/mastering situations however, as you may be able to hear more going on with the clarity of the treble, and the subdued character of the bass. The best headphones for mixing under $100.
Frequency Response. 10 Hz – 22 kHz for the 440 and 15 Hz – 24 kHz. Before I said the M40x had more bass; by more I meant it kind of hits harder, while the 440’s is more detailed and has more texture.
I do like both of these headphones a lot. I own the M40x and I have demoed the 440. However, there’s a headphone I like better, and it’s called the Sony MDR V6. It’s just about the best investment you can make as your first audiophile purchase. Because you were craving information about the 440 and 40x, I presume you’re just starting out. I would highly recommend the V6. Interested in finding out exactly why?
Stu is determined to provide the truth about all things audio, and strives to deliver excellent content to you the reader! In his spare time, he likes to fish, paint, play guitar, attend church, take photos, record videos, graphic design, and more. His attention to detail and perfectionist attitude are what allow him to excel, but it can be both a blessing and a hindrance at times.