Closed back PM headphones are not as common as open back but these are what I needed. Headband could use a little more cushioning but still very comfortable. Highs, mids, and bass are all excellent. I won't ever go back to dynamic headphones. Got them on sale for $240 so a tremendous value. Build quality is fantastic. Headphone is not labeled left/right but the cord is. The thick earpads are angled, thin part goes in front of your ears, the thicker part behind your ears. I strongly recommend a headphone amp.

I've got these headphones for over a month now. Allthough they have some issues i'd like to see resolved in the next iteration, they are in my opinion the best closed back headphones in this pricerange.
Starting with the build: Sadly, this is not the strongest point of the headphone. The materials are quite nice, I'm really impressed by the earpads. The material of the headband could be a bit more comftable. If you have no issues with the weight, then i can say it is overall pretty comftable.
Taking it of an on is the real issue though. The construction can bend an twist in every direction and feels quite frankly pretty flimsy. The carry case is appreciated, but i feel it is way bigger than it needs to be. The Cable is good, but nothing special.
Now to the sound: This is the strong point of the headphone. I have not heard any other closed back headphone which sounds as open and wide as these. You get enough detail, without it being fatiguing. My favourite part is the bass, which is strong, yet detailed and controlled. There may be some aspects, that are better handled by other headphones, but what i like about the m1060c's is that they have no obvious weakpoint.
Overall I think the sound gives this the 5 star rating. Other than the headband construction, there is nothing to complain.

Best sounding headphones I've ever owned. They're heavy, so you'll feel a pressure point on the top of your head. You will get used to it, but they're not always comfortable headphones for long listening.

Great sound right off my iPhone even better with amp, ok build for the price. Would recommend

Sound - 9 out of 10,
Caps and pads - 9 out of 10,
Wires - 8 out of 10,
Headband - 4 out of 10,
Comfort - 7 out of 10.
Overall - very satisfied!

I find my m1060's much more enjoyable to listen to. There isn't too much about the overall sound of the 1060c that makes it stand out against any other headphones in the same price range. Admittedly I own much more expensive and higher quality headphones than the 1060c's but my original plan because of all I've heard about the new and superior driver's over the m1060 was to remove the ear cups and turn them into open back as suggested by many reviews to be able to compare them to much higher priced cans. Unfortunately I can't find any aftermarket open grills to help modd these into open cans. The end result is that they don't get much use as I have other much more satisfying cans to listen to. At this point I wish I was still within the return period because I would go so far as to say that they are overpriced for what you get and many other more desirable, better sounding headphones in this price range!!

Best investment I’ve made to my headphone collection, these CANS are incredible, however they need a quality headphone amp to make them sing. Highly recommended

Break these in and take off the cups. As many others pointed out, they start sounding good once this is done. Using SMSL M500 + SMSL SP200 THX AAA 888 combo and drives them hard. Not as detailed as say the Sundaras, but they are really enjoyable and worth the price. They are reasonably efficient and can be run off a Cobalt portable.

I bought the M1060C on a whim and absolutely love it. I own the 4xx and Fidelio X2, and love both, but was interested in potentially upgrading to the Hifiman Sundara or the 6XX. I really began loving the bass of X2, but was interested in the forward vocals of a Sennheiser. I felt like I would have to compromise somewhere. After doing brief research, it seemed the M1060C was getting great reviews in both bass and mids, so I purchased it on a whim And to my surprise, I have been blown away by the sound signature and quality.

It blows my 4xx out the water. The bass is thick and detailed, it puts the X2 bass to shame. The vocals are forward, with detail and heft behind them. The singer sounds right in front of you. It's EXACTLY what I wanted in a sound signature. You get that big, rich bass of a 100mm Planar, but with no compromise on detail in the mids. The highs are great too, but a little rolled off. So it actually makes these a dream to listen to.

As for build quality, I haven't had an issue so far; but it build is flimsy. The comfort isn't the best, but I actually find them surprisingly comfortable for their size once you get used to them. They stay on my head fine, a problem I've heard with the M1070 clamp force.

Overall, I am exceedingly happy with the M1060C and I feel like it's an unsung hero of the Monolith line. Maybe the M570 and M1070 are a hair better, but for the price, the M1060C is an outstanding value. As for the Sundara, everyone loves it, but from what I'm told, it's a very bright and crisp headphone, and I enjoy the bass and warmth of planars. So the M1060C is actually a better fit for me. I don't feel I'm sacrificing on details at all. The vocals are so detailed. I really love this headphone.

The ear cups are around 106mm outside diameter. The drivers are around 80mm if measured diagonally. Let's not be deceptive here. The rest is just giant bulk and weight. The headband is awful. Borderline garbage.

They sound fair as closed back, but really come into the light when converted to open back. If I wouldn't have converted them, I would give them 2 stars. Massive room for improvement. Probably my last Monoprice purchase.