I was initially told the cross-over occurred at 2kHz and was a shallow slope. Inner Pad dimensions: depth = 14mm, diameter = 43mm I tried to open up the pair I have to get a look at the driver but the pads appear to be glued in place so I was unable to inspect them. The pads do a good job of holding a seal, even below the ear where it meets your neck it doesn’t have too much of a gap. (website links), Foobar 2000 for Dummies (Part 1) – General Setup, Foobar 2000 for Dummies (Part 2) – Playing DSD – New SACD plugin (0.9.x and 1.x.x Series), power, efficiency, levels, balanced, impedance. This type of driver is often used as buzzers in hand held devices, but there are wide-band versions of these drivers that are becoming more common as speakers in portable devices. Add to that the distortion will be lower at lower listening levels as well. They are also good from an acoustic point of view, as they have a … After some time my ears still start to hurt though. Those looking for a less colored hi–fi sound should EQ it or use the filter described down below. On some music you can hear a slight ‘etchy’ sound in the upper treble. These are bold lines that stand out from the usual flat cup plates you may find on competing on-ear designs. There is some microphonics (you can it mechanically when touching the cable) but not so much when music is playing. Its MSRP is $ 199.- but I got one new for € 139.- which is a good price given the quality of what’s offered. The headband and cups use the same protein leather materials wrapped around some internal memory foam so it is reasonably soft and comfortable on both the ears and head. A shortcoming of my measurement rig. GrapheneQ is a slightly different kind of material. The 1MTDOEH is the better sounding one but if you don’t like clear mids the Meze 99 may be your headphone of choice. The inner panel of the earpad is solid protein leather, but does have a small pattern of holes in the wall in front of the ear. The 1More Triple Driver Over-Ear Headphone has three drivers...sort of. It's black and silver color scheme is nicely executed with above average materials at this price. So, a little WAG (wild ass guess) here: I asked what the voice coil diameter was because it seems to me the logical way to build the driver is to have a large central dome that has the graphene coating, and leave the mylar uncoated outside the central dome to provide the flexible suspension for driver movement. Type: On ear, closed Outside noises are somewhat attenuated but not greatly attenuated. TH: How is the graphene attached to the mylar? Fortunately, the pads are extremely soft and I found them quite comfortable for long listening. This is not quite the same architecture. Max. Distortion also dropped from 5% to 2% at 90dB SPL (Right Channel), CSD is also cleaner around 12kHz (Left and Right are overlaid). There is still some (+4dB) audble bass boost but not too much. ALL measurements are made with a good SEAL on a flatbed measurement rig. It sounds ímpressively ‘full/warm/bassy’ even directly from a phone. In my impedance and phase measurements of the 1More TDOEH I do observe a feature at 3-4kHz that looks like it might be the cross-over coming into play, and I do not see any feature at 10kHz that might indicate the cross-over. This will show up in the impedance and electrical phase response of the driver showing up as large deviations as the diaphragm lags the coil movement, and smaller features at localized frequencies as the driver breaks up into modal vibrations. When the tweeter comes ‘in’ there is nulling from 5kHz to 8kHz. There is a good tilt and the headband can stretch sideways and expand far enough down that it will fit most heads. Much better than I expected. The cups can swivel about 45º so can’t lie flat on a surface but can swivel more than enough during usage. Here's the dialog: TH: If it is fixed edge, does it have an area around the edge that doesn’t have graphene on it so the area near the edge can flex better to allow fee movement? Pads: NON replaceable, leather with soft foam The pads do have a leather smell to it which pleather doesn’t have. Below the distortion measurements of the 1MTDOEH (Right channel).The plot above shows the level differences (in dB) between the signal and the harmonics. The third driver, mounted behind the main driver but within the sealed headphone capsule, is a passive element something like the passive radiator you'd find on a speaker. The fact that the horizontal line doesn’t drop down is testimony to the excellent bass extension. Below 1MTDOEH vs Meze 99 (Classics)The Meze also is darker and has recessed upper mids (= less forward sounding). The cable part going to these plugs is quite thin and feels silicone alike. Metal parts, really nice finish with luxury looks and feel. You can think of it like oriented strand board (OSB) structural wood sheeting. The 1More Triple Driver Over-Ear Headphone is a pretty stylish affair. Impedance: 32Ω It has 2 drivers (active drivers) and a resonating passive membrane behind the driver. Around 5% 3rd harmonic distortion below 70Hz. The mechanisms seem well built; all-metal construction; and I experiences no rattling or squeaks. The headband frame, gimbals, and screws into the cups are all made from aluminum. The headphone looks as though it is ‘open’ as one can look inside but there is a piece of transparent plastic which seals it off. In the exploded diagram near the top of this page you can see the ceramic tweeter element that is mounted to front of the baffle plate, which is in front of the main driver. Impulse response measurements show a similar trait. Triple Driver Over-Ear Headphones The hinges allow the ear capsules to fold inward for storage and transport in the included hard side clam-shell case. The bass on the MH40 is noticeably more lifted and bleeds into the mids. Ah, so they just count 1MORE driver to the actual number of drivers in the product! On some recordings there is some ‘sharpness/etchyness’ in the the upper treble. Graphene is the strongest material ever made. Will look into this shortly. Pads should provide a good seal and comfort. (Just guessing there, by the way.). Below the CSD (waterfall) plot of the 1MTDOEH. I poked around to see if I could disassemble the headphones and found the pads appear to be glued on. Simple capacitor, or something more complex? The treble is ‘soft’ and not harsh nor sibilant.