Seldom in our listening has a headset created such a smooth, detailed sound while maintaining such immaculate balance as the Custom One. The timbre of bowed string instruments was also delivered with vibrant color. Bass sounds a bit ‘fat’ and ‘uncontroled’. Below the differences between the stock COP (not modified) just sporting the grey velours pads, the modfied COP (see description below) with grey EDT 770 V pads and the modified COP with black EDT 770 VB pads. Everything now sounds detailed and has ‘nuances’ that lack using the original pleather pads. When the small hole in setting ‘2’ is observed and seeing the impact that makes on the sound it is easy to conclude that a small leakage somewhere in the cup can have a noticeable influence on the sound. The COP (Custom One Pro) retails for around € 150.-. but got this one for half the price second hand. Bass sounds ‘fat’ and ‘wooly’ and is disattached from the mids and ‘hollow’. This works well with recordings that aren’t ‘full’ sounding and adds a good ‘body’ to those recordings. They are harder to get on there as the original pads but once on there fit like a glove. The thick pad that cushions the headband is double layered, and fastened by Velcro for easy removal. Those that are looking for excellent bass won’t find it in this headphone. Left and Right. As the drivers are not angled the effect is very small at the most. Setting 3 is very similar to setting 2 but has more bass. Extremely quick and precise in its response, these drivers are accurately replaying frequencies anywhere between 5 to 35,000 Hz. The Custom One lays sound out before the listener so effortlessly that, at times, they had a lulling effect, especially with instruments like piano and keyboard. Upgrade your lifestyleDigital Trends helps readers keep tabs on the fast-paced world of tech with all the latest news, fun product reviews, insightful editorials, and one-of-a-kind sneak peeks.Digital Trends may earn a commission when you buy through links on our site. As the song builds from its sparse, desolate entrance, we flashed back to the orchestral score of 2001 as haunting French horns entered, echoing through our headspace. DON’T use the DT990 pads as the sound will be bassless even on setting 4. The pads flake rather soon it seems. Max. 11/11 Global Shopping Festival at BanggoodCheck the deals. Our favorite design point is one the simplest, yet most useful sound-shaping options we’ve seen on a set of headphones in recent memory. In practice those that are looking for balanced sound with a bit of bass boost there are only 2 ‘steps’  available. The Custom One Pros are agile and efficient. Impedance: 16 Ω Below the CSD of the modified COP (setting 2). The Custom One Pro sport 50mm, 16-ohm dynamic drivers with a rated frequency response of 18Hz to 35,000Hz. 35% Off: Beyerdynamic Custom One Pro Plus Professional Headphones with Changeable Sound for Studio and Home Applications, 5Hz-35000Hz Frequency Response, Black MFR: 709085. Below an aid to help determining the sound character of headphones with relation to the frequency response. Isolation: decent, 18dBA The usability of the ‘tuning ports’ is rather limited to 2 settings basically. Setting 2: The headphone itself is comfortable but the pleather pads can get a bit sweaty and sticky. In fact the treble is bordering on being somewhat sudued. Remove the pads by simply pulling them off. The cable connects to the left cup. The distortion is about the same as with the original pads. ALL measurements are made with a good SEAL on a flatbed measurement rig. There are no resonances that are problematic. Below an aid to help determining the sound character of headphones with relation to the frequency response. Setting 1 is unusable unless you really hate bass… Setting 2 sounds very balanced with deep bass, neutral, dynamic and detailed mids. back to measurements The song also showcased the defined power of the low end, balanced with excellent clarity in the treble. The Beyerdynamic Custom One Pro Plus and crossfeed fit together like a hand in a glove. Copyright ©2020 Designtechnica Corporation. See it at Amazon ... the frequency response can vary dramatically—it's possible for the headphones to sound a little muddy if the drivers aren't ideally … Guitars sound a bit ‘resonating’. It is available in white as well. There is a bit more lingering around 700Hz and in the bass but around 2kHz the response is improved. Driver type: dynamic Treble sounds a bit more subdued because the upper bass/lower mids peak ‘mask’ the upper mids and treble somewhat. Treble is improved and more detailed and nuanced with more air. This is described HERE in more detail. The last step… well maybe usable for monitoring too. The studio version has different drivers (80Ω) and different pads (velour) as well as a coiled cable. It combines an extraordinary sound with many individually adjustable parameters and provides an all-in-one … Treble is not sibilant nor sharp but on the correct level. Strangely enough there are reasons why I don’t find it a studio headphone at all. Some musicians have the habit of using headphones as small ‘monitors’ hanging around the neck or have them lying on the desk and play them like small ‘monitors’. The Custom One Pro is not the only headphone with a variable bass. The Pro82’s are in setting ‘1’ (least amount of bass) and the COP in setting 2. Mids sound clear ,’open’ and quite dynamic but also a bit ‘hollow’. The shape of your head, bone structure, pad size, pad ‘softness,  (compliance), hair or no hair and or wearing glasses may (drastically) change the frequency response of some headphones, so… your personal experience may differ substantially from these plots. Temperture, sweat, becoming ‘sticky’ and compression etc. Max. Personally I like the comfort and feel of Beyerdynamic velour pads. The drawing has some resemblance … just not very much and certainly not as described on the box. This means that a ‘dip’ is audible in the upper mids/lower treble. In addition to hi-fi and monitoring applications, I can attest to the Plus’s suitability for supportive use in mixing and … Frequency extends slightly better and is on the proper level. Below 300Hz there are some differences which could be caused by one of the sliders not sealing properly (one is a bit ‘loose’) or could be because of some ‘leakage’ around the 3.5mm TRS jack in the left cup. The bigger the deviation the stronger the effect. The treble is sparkling but not sibilant and of better (more pleasant) quality and detailed. current: 70mA The COP does not have the infamous ‘treble spike’ so there is no sibilance nor any sharpness at all. Forced to tender a complaint, we’d say the headphones’ laid back approach might occasionally rob music of its excitement. At first glance, the Custom One’s large, black ear cups look a bit industrial and plain. On a higher output resistance amplifier the output level will be considerably lower. The treble quality is a bit on the ‘coarse’ side and lacks finesse and refinement. Clamping force: low-medium The Beyerdynamic Custom One Pro is a closed over-ear (circumaural) dynamic headphone. Below the response of the HD630VB in center position vs the COP (setting 2) vs the modified COP with DT770 pads (setting 2). The dip between 2kHz and 7kHz could be slightly less in reality (just a few dB) because of so called Concha gain. ‘Acoustic smoothing’ is applied. The main reason the COP lacks clarity and resolution is caused by the pads. The cable is replaceable and has a thick 3.5mm TRS plug with a little ‘slot’ in it on the headphone side. Setting 2 is the most ‘neutral’ one. Take a sheet of soft 2 (or 3 or even 4 ply) toilet paper and cut a disc of the same size as the foam disc. You can use the disc as a template. What does the "frequency response" of a set of headphones tell you? There is enough air but not the ‘ethreal’ kind. There is little to no audible differences when using thin armed glassed. Inner Pad dimensions: depth = 23mm, ∅ 55mm (22mm, ∅ 58mm velour) Like the bass the mids are also is lacking in ‘definition’ and finesse’. Together with the low power rating (100mW) makes it look like the driver was designed for this goal. We spent most of our time with the headphones’ adjustable bass switch set on “vibrant bass”, but moved to the “heavy bass” setting at times, depending on source material. Fortunately these can be exchanged for other pads. Below the frequency response with a single ply of toilet paper. When these pads are fitted the FR response and sound quality changes for the better. Subbass is now boosted a little. There is also a gaming version and a studio version. The ear cups maneuver easily on their hinges, allowing enough movement to accommodate a wide variety of head shapes. There is a second peak that is a bit higher than desirable but is narrow and high in frequency. To compensate for this the amplifier is cranked up to the same level (17dB at 1kHz) as the low impedance amplifier. Advantages Beyerdynamic DT 1990 Pro over Beyerdynamic Custom One Pro Plus Better high limit of frequency response… But here the headphones once gain live up to their name, as the ear-cups’ exterior can be switched out for one of several designer plates available on Beyerdynamics’ website. back to Beyerdynamic For Hi-Fi afficianados there is only one setting usable which makes the variable bass setting not really valuable/usable for those looking for realistic sound. Usage: Home, Studio, Portable 2. highest frequency… Be sure the keep your hand below it as the driver is connected with wires which you don’t want to break off. Bass is well extended and flat to 20Hz. What improves is the bass quality and quantity and above all the resolution and clarity/presence is there. A good reason to replace them with DT770 pads. I don’t recommend using this headphone from devices with an output resistance above 10Ω. We tested the Custom One Pro by listening to a variety of different music genres through an iPhone 5, Macbook Pro, and MOTU 896 HD DAC. From the chassis to the audio performance, the Custom One Pro was built for customization. Below an aid to help determining the sound character of headphones with relation to the frequency response. The soft leather earpads (cushions) help with getting a good seal. Aside from those minor quibbles, we thoroughly enjoyed our time with Beyerdynamic’s Custom One Pro. The headphones’ drivers delivered a tangible texture to instrumentation which was especially noticeable with percussion and string instruments. It just does not excel in the typical audiophile qualities. The CUSTOM ONE PRO PLUS is like its successful predecessor, the CUSTOM ONE PRO, a versatile headphones making listening to music interactive with a maximum of flexibility. Beyerdynamic Custom One Pro Plus Headphones with Customized … Setting 4 is too bassy but not really suited for bassheads as these seek much higher levels of subbass. Aside from the bass and lower mids the sound is still ‘open’ but a bit less dynamic than in the ‘2’ setting. Beyerdynamic Custom One Pro . Its build quality is certainly useful but the power rating is what makes it not that suited. voltage: 1.3V Monitoring… not mixing. We were treated to deep, rounded tones with the entrance of each new drum beat or synth patch, all of which was spread out in perfect balance with Trent Reznor’s sparkling vocals. They are soft and feel pleasant. Excellent qualities for monitoring but less suited for ‘Hi-Fi’ sound enjoyment. Alas ‘air’ is also missing. Simply stick the screwdriver between the ring and the cup. Cymbals tend to … Based on our rating, DT 1990 Pro has a total rating of 8 out of 10 vs 7.5 out of 10 for Custom One Pro Plus. Inside the Custom One Pro’s extraordinarily ordinary carton, we found the all-black headphones mounted on a grey cardboard stand, accompanied by a ¼-inch adapter, and a single, removable headphone cable. Ensure the wires are ‘free’ and note the small tab on the baffle and ensure this fits in the notch in the cup. Weight: 290 g. Below the frequency response of the modified COP with DT770 pads in all 4 settings. The COP (Custom One Pro) retails for around € 150.-. but got this one … That’s not much to offer for a headset in the $200 range, but we held hope that Beyerdynamic’s choice was to put its money where it counts most: the Custom One Pro’s performance. The “Custom” means, that the user can customize the appearance of the cup backplate and adjust the bass response using a built-in slider. By What Hi-Fi? Cable entry: single sided (left) As this is a dynamic headphone the frequency response might be amplifier output resistance dependent when certain higher output resistance amplifiers are used. The distortion in the bass is very high. Below the frequency response of the COP in setting ‘2’ (Left, Right)Channel matching is good above 300Hz. Below the differences between the COP and newer COP-Plus in ‘2’  setting. While close to being tonally balanced in setting ‘2’ the headphone lacks finer nuances and ‘details’ in the bass, mids and treble which is a bit disappointing for those looking for the sound of  the DT770/DT990 but adjustable. The Sennheiser HD630VB also has a similar feature except this is doen electrically with one stepless control which controls both sides at the same time. Excellent clamping force and sits on the head quite well even when moving around. Get giftable tech Shop now. By What Hi-Fi… (Sub)bass extension and overall tonality is great given the horizontal trace on droops slowly and does not show much dips or peaks. Put the foam disc back on there and push the ring back in place. The black leatherette ear pads and headband pad can also be switched out for beige, brown, or white options, allowing a fully personalized look. A horizontal line shows audible neutral response in the plots on this website. Timbre – the term used to describe tonal color and/or quality – was a word that repeatedly came to mind as we shuffled through our diverse music catalog with the Custom One. Upper treble lacks nuances. Bass extension and linearity as well as impulse response is improved. You’d be hard pressed to find a better sounding set of headphones in the $200 price segment than the Custom One Pro. The 2nd harmonic distortion drops below 1% at 70Hz but remains kind of high till 2kHz and still above the limit of my measurement rig. There seem to be some differences. All rights reserved. Settings 1, 2, 3 and 4. 1 (all ports  closed as shown on the left in the picture), 2 (most neutral setting), 3 (more bassy) and 4 (all ports open as shown on the right  in the picture)Setting 1 is bass shy and hass a ‘warmish’ character to the mids. The perceived dip around 7kHz is gone. Soft approach occasionally lacks excitement, The best cheap true wireless earbuds for 2020, The best desktop computers for small businesses in 2020, The best stylus for note-takers and artists. The Custom One Pros are great for folk who put analysis and detail above all else, but for all-out entertainment, you could do better Beyerdynamic T5p review. It has good bass extension and a small boost (+3dB) around 90Hz. Type: Over ear, closed The Beyerdynamic Custom One Pro is a closed over-ear (circumaural) dynamic headphone. Setting 4 has too much mid bass boost (+9dB) which bleeds into the mids making the sound ‘fat’. The Custom One Pro sport 50mm, 16-ohm dynamic drivers with a rated frequency response of 18Hz to 35,000Hz. Put 1 ply on top of the driver as shown below. As it turns out the DT770 pads fit well on these headphones. Cable: 1.5m terminated in 3.5mm TRS with screw-able 6.3mm adapter + 1.3m headset cable with microphone and 1-button remote with a 3.5mm TRRS plug (CTIA compliant). I think there is massive … Simply press the ring back in place. Thick armed glasses leads to an audible loss of lows (5dB lower) but still sounds full and fairly extended. 10% is audible but one has to remember this is measured at 90dB SPL so will be lower at more normal levels. For monitoring this setting could be usable. Cut out a small circle about the size of the tube in the middle of the cup. The small ‘pins’ that hold the foam must be down. With these pads the modified COP has a nice and deep bass, open, dynamic mids with good clarity/presence and detail. This setting is usable on music that lacks bass and ‘warmth’. The step response plot below shows very little and short lived ringing. The leather look is made with a thin layer of PVC which covers cloth. That’s why there is a ‘studio version’ I reckon. You can ‘customize’ the amount of bass in 4 steps. Comfort and adjustability is good. Mind the orientation of the ring. This will most likely destroy the drivers. The lower the low-frequency response, the stronger and juicier the bass. Below the frequency response of the current Custom One Pro Plus. The fact that the 3rd harmonics are high is pointing towards clipping alike non linear behaviour. To address this some additional damping (1 ply of  2ply toilet paper) is needed. Below the CSD of the COP (setting 2). Nom. When the DT770 pads are put on the headphone looks like this: Below the measurements of the differences between a stock COP with pleather pads versus the modified COP with 1 ply and DT770 pads (both in 2 setting). All bass notes are there and bass sounds ‘full’ but the quality is not the best and lacks ‘definition’. Headphone connector: 3.5mm TRS socket with a small slot. At the end of the song, a wide frequency filter effect showed off the Custom One’s well balanced detail at each end of the spectrum, its drivers effortlessly transitioning from very low to very high pitches. The measured signal follows the applied signal almost perfectly. : 116dB The first and last setting may be usable for monitoring purposes only. The lack of ‘presence’ and ‘clarity’ thus. This ensures the cable sort-of clicks and doesn’t rotate in the cup. A low impedance means it is well suited for portable duties. The CSD of the original pads looks a bit ‘better’ below 2kHz but the treble response is a bit less ‘jagged’. Cut a disc of felt somewhat larger in diameter as the actual driver and put some double sided tape on it. Fluffy ear pads rest softly against the head, easily surrounding the ears and reducing pressure, while thick headband padding ensures a pressure-free fit for comfortable listening over extended periods. The mids are lacking in ‘clarity/presence’ and sound a little too ‘laid back’ for me. There also is a black velour version called the EDT 770 VB which looks nicer. It even get’s slightly more neutral even. Fortunately the DT770 pads fit (although fiddly to get on) which improves on the negatives of the stock COP. How to make a collaborative playlist in Spotify, What is Tidal? The Beyerdynamic DT 770 Pro are well-built, durable and great-sounding closed-back headphones. Of course these can be replaced and may well be available for some time as well. Resonances appear ‘worse’ but is caused by the levels starting a bit higher in the plot. The initial rise does not reach the 0dB line and is indicative of the lack of ‘detailing’ and ‘attack’. (no smoothing) Setting 1, 2, 3 and 4 (all ports open). ... In-Ears of the beyerdynamic Byrd series. Treble is present though somewhat subdued and completely lacking the ‘beyer peak’ in the treble. But with that, as we touched on with the vocal performance, comes a slight drop in engagement in the midrange and treble. The ‘Plus’ part is the fact that it comes with 16 different ‘shields’ which can be replaced using the supplied allen wrench. This makes instruments less ‘detailed’ and less ‘refined’. We were pleased to discover the Custom One Pro provided a particularly well-crafted soundscape, highlighted by intent detail, vivid reproduction of instrumental timbre, and airy stereo field. Aside from a small correction of the microphone itself also some correction in the lowest frequencies is applied to the plots to compensate for the perceived loss of bass when using headphones. No improvement here as the distortion is caused by the driver itself and not the pads. It’s not that the sound quality is poor. The treble lacks ‘air’ and ‘finesse’. This setting is the most ‘neutral’ setting it hass. This makes it less suited for studio usage where higher impedances are more common and higher power ratings are more practical. These are the real deal. S.P.L. The hi-fi streaming music service fully explained, Sonos releases microphone-free Arc SL Shadow Edition soundbar for $750, Wonder Woman 1984 will mark HBO Max’s 4K HDR debut. Another tunable headphone is the Takstar Pro82 in both the ‘early‘ and ‘later‘ version. The treble quality is the same as on setting ‘2’. This way the plots are overlay-ed and it is easier to show the tonal balance differences.As can be seen the tonal balance of the does change tonal balance when driven from higher output resistance (desktop) ampifiers. It is somewhat microphonic though so you can hear the cable rubbing on clothes and when touching it. Below the Right channel is shown (setting 2). The frequency response of an audio product is nothing more than a visual representation to help us understand how a pair of headphones output sound. Frequency Response - 20 - 24,000 Hz and Impedance - 16 ohms Electronics Gift Guide. If you’ve got this headphone and a Hi-Res audio player, it’s time for an experiment. A ‘horizontal‘ frequency response curve on the shown frequency response plots on this website thus indicates a perceived ‘flat’ tonal signature. Mids are ‘warmer’ than neutral. Aside from the brilliant timbre of instruments, the Custom One is notable for its wide stereo dimension coupled with fine detail. (Left and Right are superimposed). So adding some felt inside the cup won’t hurt the sound. Beyerdynamic Custom One Pro review. The ‘beyer treble peak’ appears as well though. Mids sound hollow and have a an overly ‘warm’ character to it. To test this the headphone is measured via a low impedance amplifier (0.2Ω) and a high impedance amplifier (120Ω). When both the COP and COPP have been modified they measure and sound identical. With a frequency response up to 35,000 Hz, I wouldn’t be surprised if the Custom One Pro was capable of playing high-resolution audio. ... Headphone frequency response… The headband and gimbals construction is the same as the DT770-990 series and works well. After that scond peak the membrane is well damped and the resonances following it are low in amplitude and short lived. beyerdynamic Blue BYRD: Which languages are available for the voice prompts? Create a free website or blog at Very Beyerdynamic as it were. Below the measured response overlayed with the drawing on the box of the COP. The COP is suprisingly insensitive to seal loss for a closed headphone. Perfect seal, wearing glasses with ‘thin’ arms, wearing glasses with ‘thick’ arms, bottom part of the pad slightly lifted so loss of seal. Below the same distortion plot but with the vertical scale in percentages instead of level differences. Beyerdynamic DT990 Pro-250Ω. The headphone part is the same. Discover the key facts and see how Beyerdynamic Custom One Pro Plus performs in the headphones ranking. Bass sounds present and has deep rumbles as well. Once modified it has an addictive and dynamic full sound that does not appear to have many drawbacks. The multiple instrumental tracks on “Closer” by NIN were especially well-exposed. A disadvantage is that both cups need to be ‘switched’. A complete loss of seal (lifted pads) leads to a more ‘cuppy’ sound and loss of body and bass. Read our review on The 440Hz square-wave also is quite good. The 40Hz squarewave reproduction is close to ‘perfect’. For those looking to spend $200 or even quite a bit more on a serious set of cans, we highly recommend you add the Custom One Pro to your list. ... Are velours ear cushions that fit the Custom One Pro … The Custom One Pro is a new headphone by beyerdynamic that is both portable and moddable with replaceable ear cups. Beyerdynamic Custom One Pro Frequency Response (0dbREL = 100dbSPL) Beyerdynamic Custom One Pro CSDs Doesn't sound as bad as it looks. Stick the felt disc to the bottom and put the driver back in. Frankly, there wasn’t much we didn’t enjoy about the sound these headphones reproduced. Didn’t check, but these differences may come from the pads. Beyerdynamic Custom One Pro Plus ⭐ review. power rating: 0.1W (100mW) What the Custom One Pro lacks in packaging, it makes up for in features. In an effort to compete with the likes of name-droppers like Dr. Dre’s Beats, or Ludacris’ Soul headphones, the long-established German audio company’s latest headphones are prominently positioned, and offer a slew of exterior and sonic customization options for $200. Colour options: black, white Below the distortion measurements of the COP in ‘2’ position (Left channel). Look for a spot where there is some room to stick the screwdriver in. However, the audio cables leading to the ear cups are a little exposed. On top of that one has to remember that higher distortion levels below 100Hz are not really audible as distortion but rather as ‘coloration’ of the sound. Below the spectrum plot of the modified COP. This gives me reason to believe the drivers have not changed when the COP became the COP-Plus. Efficiency: 96dB/1mW (114dB/1V) But in all honestly, those buying that expensive kind of gear won’t be interested in the COP anyway. The Custom One’s bass control switch was designed to address that very issue. Signals to the right cup go through a small cable running through the headband. One track that handily exposed the vast, spherical nature of the Custom One’s sound field was Radiohead’s “Codex” from The King of Limbs. Whereas many manufacturers splurge on opulent packaging and questionably useful accessories, Beyerdynamic has adopted a decidedly old-school, plain presentation. The cello in the Beatles tune “Strawberry Fields” has seldom been delivered with such life, its carving tone reproduced with sawtooth-crunchy goodness. Very dynamic and ‘open’. About 5dB more (lower) bass is very audible. Below the frequency response of the COP in all 4 settings. This headphone is now called the Custom One Pro Plus(COPP). The headband and arms that support the ear cups are made of dull … There is a small emphasis (the small second peak) in the 7kHz area but aside from that the response is pretty good with short lived resonances. The plot below is smoothed (psychacoustic smoothing) which gives a better idea of how the tonal balance changes.Bass levels around 100Hz are lower. The DT990 Pro in 250Ω impedance is a well … The headband and arms that support the ear cups are made of dull black metal that feels sturdy enough to sustain a few serious pavement drops without injury. ... beyerdynamic Custom One Pro Plus … Setting 3 has a noticeable bass boost (+6dB) which works well with recordings that lack ‘body’. I see no reason why someone would ever want to use this setting for hifi usage. Below the rear of the driver (right cup) and the cup. So only the Beyerdynamic EDT 770 V pads (for the DT770) can be used. You will end up with 2 (or 3 or 4) individual plies of toilet paper. Enjoy music through headphones on a low budget, stock COP (not modified) just sporting the grey velours pads, modfied COP (see description below) with grey, Subjectivist, Objectivist or Inbetweenivist ? This basically leaves 2 usable settings for music lovers. The cable feels ‘cheap’. Beyerdynamic rolls out a fascinating set of headphones allowing you to change the frequency response. 2. highest frequency… Mids sound clear ,’open’ and quite dynamic, but like the bass, are also lacking in ‘definition’ and ‘finesse’. wear out the very thin (and thus soft) PVC layer. EDT 770 V pads, toilet paper and some 1mm felt (crafts store) or washable kitchen wipe (used here) and some double sided tape is needed. Setting 3: A small (5dB) bump around 100Hz is most likely responsible for the bass quality. The 100μs pulse almost reaches the applied signal and shows a fast response. Their frame doesn't feel as sturdy as the DT990 PRO, but the ear cups feel better built and have metal enclosures compared to the plastic one of the DT990. NO SMOOTHING is applied to the shown plots. Enough adjustment possibilities. Those pads will set you back another € 20.- to € 25.- though. Deviations in different severities at different frequency bands have an effect on the sound character. Most measurement sites have some smoothing applied which ‘irons flat’ sharp peaks and ‘wiggles’. The gaming version has a microphone connected to the plug with a mute button and volume control in the cable. Gently pry the ring upwards till it pops out. I have no idea how old this headphone already is but has only minor scuffs so seems to have been handled carefully. Now the individual plies need to be pulled apart. The Beyerdynamic Custom One Pro headphones look and sound like a standard set of cans, but they're much lower impedance than many similarly designed headphones, rated at just 16 … Also, the upper treble region was slightly lean for our taste. The headphone is sturdy and well built. The ring and foam disc are removed creating the situation below.
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