Reviewed December 2014
Details: Flagship in-ear from Scotland-based RHA
MSRP: $119.95 (manufacturer’s page) ; $129.95 for MA750i w/mic & 3-button remote (manufacturer’s page)
Current Price: $120 from amazon.com for MA750; $130 from amazon.com for MA750i
Specs: Driver: Dynamic | Imp: 16Ω | Sens: 100 dB | Freq: 16-22k Hz | Cable: 4.4′ I-plug
Nozzle Size: 4.5mm | Preferred tips: Stock single-flanges
Wear Style: Over-the-ear
Accessories (5/5) – Single-flange (6 pairs in 3 sizes) and double-flange (2 sizes) silicone tips, foam tips (2 pairs), shirt clip, stainless steel eartip caddy, and zippered leather carrying case
Build Quality (5/5) – As with RHA’s lower-end models, the construction is impeccable. The MA750 boasts machined stainless steel housings, metal nozzle filters, and thick, rubbery cables. At the earphone end there is a molded “earhook” section about 4” long. It’s not memory wire, but it’s a lot more comfortable than the earhooks I’ve come across in the past. The cable is thick and tangle-resistant, and all of the hardware is metal, including the 3.5mm I-plug with a long “spring” strain relief. The 3-year warranty is very impressive as well
Isolation (3.5/5) – The housings are narrow at the front, allowing a good insertion depth and good isolation
Microphonics (4.5/5) – The cable carries some noise but microphonics are generally not a problem due to mandatory over-the-ear fitment and the fact that the cord is thick and heavy, and doesn’t move around much
Comfort (4/5) – The earphone housings have a familiar flared shape a-la Dunu Trident and RHA’s lower-end models. The earpieces of the MA750 made of stainless steel, though, so they are a little heavier. The small diameter at the front nonetheless affords a surprisingly comfortable fit considering the weight
Sound (8.9/10) – The previous RHA earphones I’ve tried left me impressed with their bass power and clarity, but the new MA750 is a strong performer all around. Its signature is predicated on enhanced bass, but less so compared to the lower-end models. It has a strong emphasis on sub-bass, and a little less on mid-bass. The bass quantity is not at what I would consider “basshead” level – deep bass presence is good with the MA750 but there’s not too much mid-bass punch compared to some of its competitors. On the other hand it is a lot bassier than the HiFiMan RE-400, which sounds more controlled but appears deficient in subbass in comparison the RHA unit.
The MA750 is warm in tone, but not overly so. It has decent enough treble presence to balance out the bass, though it is certainly is not a neutral earphone. The midrange is rich and full-bodied, with very decent clarity considering the sound signature. Clarity is better than with many other stereotypically “warm” earphones, such as the Sony MH1C and Dunu Trident. The RE-400, on the other hand, is more mid-centric, but still sounds more neutral and is a little clearer through its midrange. The pricier Dunu DN-1000 hybrid, too, is clearer, making the MA750 sound veiled comparison.
The upper midrange of the MA750 is energetic but emphasis diminishes before getting into the regions that typically cause harshness and sibilance. The MA750 is brighter overall compared to the Sony MH1C and Dunu Trident and has a slight tendency to sound “tizzy”, especially at high volumes, thanks to the lower treble emphasis. It isn’t bothersome, however, and I definitely would not call the treble energy excessive. On the other end of the spectrum, the Dunu DN-1000 has treble that is brighter and more revealing of artifacts, making the MA750 sound quite smooth in comparison.
Presentation-wise, the MA750 performs well for the price. Its soundstage is larger than those of the MH1C and Trident, and separation is better as well. The Trident especially sounds more in-the-head and congested in comparison. Aside from the enhanced bass having the ability to throw a slight veil over minute details and take away from its imaging ability, there is not much to complain about with the MA750 here.
Select Comparisons
RHA’s $40 MA350 is one of my favorite budget-friendly sets for enhanced bass, but while the flagship model does command a healthy price premium, it also offers up a significantly more refined sound. The MA350 has strong, domineering bass, but the MA750 manages to sound rich and full-bodied while maintaining lower overall bass quantity and better bass control. It’s more balanced, as well as smoother and more refined. The treble of the MA350 is a little grainy in comparison, and more prone to harshness. The MA750 sounds more natural and enjoys a larger presentation with better depth and separation, making the MA350 appear congested in comparison.
Onkyo IE-HF300 ($129)
The IE-HF300 couldn’t be more different from the RHA MA750 in design, but sonically both earphones tend towards a warm, enhanced-bass sound. The RHA unit boasts bass that is both more extended and more powerful overall. The HF300, meanwhile, has less bass quantity with a focus on mid-bass. This results in mids that are a little more veiled compared to the MA750. The MA750 sounds clearer and more crisp, though it is a little more laid-back at the top end compared to the Onkyos. Both earphones boast above-average soundstages, with the HF300 being a little more open-sounding.
Yet another enhanced-bass, consumer-friendly earphone in the sub-$150 range, the EP1 nonetheless offers a sizable contrast to the MA750. Both earphones have a strong emphasis on bass but the MA750 is a little more powerful here, which gives it a warmer and more full-bodied sound. The RBH earphones place more emphasis on the midrange and sound a little clearer as a result. The MA750, on the other hand, has a thicker midrange presentation and a smoother and more forgiving sound. The RHA also boasts a slightly wider presentation and tonal character that, to me, is more natural overall.
VSonic GR07 Bass Edition ($179)
This earphone’s “Bass Edition” moniker is only true insofar as it is more bass-heavy than the regular GR07. Next to the MA750, however, the GR07BE sounds rather balanced. The RHA unit has more bass and a warmer tonal character while the GR07 is closer to neutral. The bass of the MA750 is boomier and results in more veiling of the midrange. The GR07BE lacks some of the full-bodied character of the RHA, but remains clearer, especially in the midrange. Up top, the MA750 is a little smoother where it counts while the GR07 is more sibilance-prone.
Value (9/10) – The RHA MA750 has a lot going for it – a warm and lush sound, spacious presentation, and good bass presence. No less important is the construction quality, which features stainless steel housings and thick cabling. The earphones are comfortable, too, thanks in large part to the over-the-ear fit and molded earhooks, and isolate surprisingly well. Most impressively, the MA750 is not at all exorbitantly-priced – it’s extremely comfortable just north of $100. Early last year I found myself impressed with the entry-level MA350 and hoped to see more great things from RHA, and this year starts off with another hit from the Scottish manufacturer.
Pros: Extremely solid build quality; 3 year warranty; warm sound with excellent bass presence
Cons: Housings a bit on the heavy side
337 Responses
The Momentum should also have plenty of bass coming from the M3. The biggest difference will be in how the midrange is handled – while both are slightly “v-shaped” in response, the Momentum is thinner in the midrange and sounds more recessed, while the MA750 maintains a nice and rich sound throughout. The MA750’s approach sounds more natural to me.
The MA750 is a tiny bit more power-hungry but both work great with a quality everyday source such as an iPhone. I don’t see why a FiiO DAP wouldn’t have the same or marginally better results.
Thank your the reply.
It sounds indeed like it would be a good upgrade in my case. However, i’m still considering the Sennheiser Momentum as well. I’m leaning towards the MA750 though, as I’m assuming its sound signature is closer the the M3’s sound signature (but with more/better lows and highs).
Please correct me if I’m mistaken, as while I do like me some V-shaped sound, I don’t want to overdo things.
Source is currently a Sansa ClipZip. Future might hold a FiiO DAP if they get their **** together and add ReplayGain support.
I’m also assuming that both the current and potential future DAPs are enough to drive the MA750 and Momentum.
The M3 is pretty well-balanced so you don’t get much bass enhancement with those. The MA750 has enhanced bass (a nice step up from the M3 without going overboard) and a slightly more v-shaped overall sound signature (the bass and upper midrange have some lift). This makes for an overall more colored and “fun” sound than the more neutral M3.
Nice review. I’m really considering these earphones. Would you be so kind to make a quick comparison with the Brainwavz M3, as those are the ones I have at the moment but I find them a bit light on the bass? Thank you!
Yes, the MA750 is typically my recommended upgrade from the Piston 2 for those who liked the overall balance of the Piston2. Keep in mind that as with all things audio it won’t be 5 times better despite being 5 times the price, but the differences add up to a better listening experience.
Hey joker ;
First of all let me tell you that i am big fan of the work and effort you put in here . About a year ago i bought my xiaomi piston 2 thanks to your excellent review . İt was my first step into the quality iem market and i love the sound of my Pistons . Now i want to step higher , considering the sound signature of piston 2 would you think that RHA MA750 is an worthy upgrade ?
Thanks.
The Momentum in-ear is more v-shaped (meaning the midrange is less emphasized than the bass and treble). The E10 and MA750 are both like this, but milder than the Momentum, and the CX300 even less so.
So coming from the E10 I think it’s the opposite direction of where you probably want to go with your upgrade.
Thanks again man. Absolutely last thing, where would you say the Sennheiser Momentum’s lay between the earphones I’ve previously used? Most people say the MA750 are better so I kind of wrote them off.
The vocals on the CX300 are veiled. On the E10 there is very little veiling, but it’s hardly a vocal-focused earphone. Prominent vocals would be something like HiFiMan RE300h (https://theheadphonelist.com/headphone_review/hifiman-re300h-in-ear-earphone-review/), where the midrange is pushed forward.
I’ve compared the EPH-100 and MA750 a further down on this page: https://theheadphonelist.com/headphone_review/rha-ma750-ma750i/#comment-2534 .
The best thing I can say is that you can’t really go wrong in this decision as they’re both very solid earphones for the money. They differ slightly in tuning and more so in design, so just get the one that appeals to you most.
When you say veiled, would you say the vocals on the CX300 are quite veiled and that they’re much more prominent on the E10? I don’t know if you could help me out with comparing the MA750 and EPH-100 for sound? As for build quality, the MA750 seem much better so that might be the deciding factor for me.
Also, thanks a lot for that reply… was very informative while being concise. I find choosing earphones (especially when expensive) to be one of the hardest things on planet earth haha.
Both the EPH-100 and MA750 will take you from the E10 sound tuning back in the direction of the CX300, which seems to be the way you want to go. Think strong technical performance like the E10 but with warmer, thicker sound and more powerful bass a-la CX300.
I tend to prefer the EPH-100 to the MA750 for hip-hop – its vocals are a little less veiled – but really either one would be a good choice.
Wondering which set of earphones would be best for Hip-Hop. I previously have had the sennheiser cx300 and soundmagic e10s. I feel like I enjoyed the sound signature of the cx300’s more but the e10s were technically better. The cx300’s just had better sounding bass to me. The E10s were perhaps too bright sounding… I’m not the most familiar with audiophile language though. The E10s were just too bright and thin. I guess they were lacking in the lower area for me. I’m now debating on either getting the RHA MA750’s or the EPH100s. Wondering how they compare to the earphones I mentioned I’ve had in the past? Which would you recommend me?
The foam tips included with the MA750 are not genuine Complys and behave differently when compressed. I’m not a fan of these foam tips either – there are better ones out there.
The case is useable in my opinion, but nothing beats the portability of my small Fidue case (http://ebay.to/1UXnijG). Whatever IEM I’m carrying with me usually ends up in that.
Ive been reading on this site for a while and purchased some of these recently.
I think these sound great and are very comfortable. I immediately liked them. I havent managed to get a perfect seal with the included tips Ive tried yet and the foam tips do not really compress/expand like I expected.
I am a little disappointed at the case as its not really functional other than to store the tips.
Awesome, glad to hear you’re enjoying these! Value is indeed the name of the game here.
Just wanted to say thank you for your time reviewing all of the products. It allows us consumers to have a better idea of sound and build quality. I purchased the RHA 750i mostly because of all the positives views on your website and amazon. This is my first over the ear headphone and was surprised by the comfortablity. The sound is probably a solid 8 out of 10 for the money.
IEM I’ve had in the past: Klipsch Image S4, B&W C5, Monster Pro Turbine (GOLD), Many different models of Sennheiser (CX 200, CX 300 ii)
I personally like the monster pro’s the best but at the price I paid for them years back was around the $250 mark, these RHA seem like a better value.
The bass edition is the safest choice here. It’s not hugely bassier than the Classic and MKII, but it is punchier which will likely be a positive in this case.
Unfortunately even in 2015 headset functionality is often still the most limiting factor in finding the right IEM. Glad RHA is standing by their product, though.
Thanks for the recommendations! The EPH-100 look intriguing, I just wish they had a version with iPhone controls. RHA’s customer service is stellar and they are sending me another replacement set, so I’ll probably just roll the dice with those for now. I do love the way the MA750i sounds.
well noted joker,
what about comparison in between the gr07 variance? which one will suit me best?
trying to save some buck due to difference pricing on each var 🙂
right now if im not mistaken they are 3 variance
gr 07 classic
gr07 mk 2 pro
gr 07 be
Yes, there’s a couple of good options for enhanced-bass, smooth-sounding IEMs that don’t have dull and rolled-off treble like the SE215 or thin, recessed mids like the Momentum. First one that comes to mind is the Yamaha EPH-100, which is a good XBA-H3 alternative, but there’s also the Sennheiser IE8 / IE80 and the various JVC FX-series wooden earphones, such as the FX700 (there’s also newer versions of these I haven’t tried).
And then at the high end there’s the EarSonics Velvet. I compared it to the Sony XBA-Z5 in my review: https://theheadphonelist.com/headphone_review/earsonics-velvet-in-ear-earphone-review/ . The Z5 reminds me of a slightly bassier H3.
VSonic GR07 would be better in the sense that you won’t be giving up any of the crispness you’re used to with the RE-400. The MA750 is a warmer, bassier sort of earphone and does give up some of that accuracy in return. GR07 BE is also perfect for giving somewhat more bass impact than an RE-400, but not so much as to be bloated or slow.
What you will lose is the smoothness of the RE-400. The MA750 is already not as smooth as the HiFiMan, and the GR07 BE even less so, especially when it comes to sibilance. Just a sacrifice that has to be made in this case – if you had an earphone with the bass of an MA750 and the treble of the RE-400 it would sound very biased towards the low end and would probably be too dull and warm to be enjoyable.
I bought these last year because of your review, and I’ve absolutely loved the way they sound. Unfortunately, I’ve had 3 pairs die in less than a year.
I also have a pair of Sony XBA-H3’s that I really like, but the form factor of those is a bit cumbersome to use every day when I’m out and about.
I have the Shure SE215 as well, but I’m not a huge fan of them, find the bass a bit muddy and the treble weak. And the Sennheiser Momentum In Ear, I find the sound overall a bit empty/thin.
Are there any other IEMs with similar sound to either the RHA 750i or Sony XBA-H3 by other manufacturers you’d recommend?
Hi joker,
awesome review, yet i still need your input before i decide to buy or not..
i listen mostly to metalcore/rock (if you want to listen, “not your ordinary metalcore band” please google “broken promises” by august burns red, its awesome)
i love the sound of double pedal with good speed, tight bass not bloated, yet still giving good impact that makes you want to bang your head ;p
i dont like treble that too high and harsh, i prefer a bit balanced sound + warm that still giving good detail, especially instrument separation, like the clarity of drum cymbal sound when the double pedal is on full speed.
right now im using hifiman re400, and overall its almost perfect, it just need a little bit more bass for the double pedal.
and after reading through the comment ive narrowed it to rha ma750 or your choice vsonic gr07 BE
so which one is better? is it better for me to upgrade or not? or maybe adding some amp? right now my DAP is xduoo x2
i just need a little bit more bass from re400 for head banging 🙂
Thanks, very glad to hear you like them!
So i ordered a pair of rha ma 750 and I love them! Thank you for your help it made my decission easier! Glad I found this website!
No, haven’t tried either of those.
After a few beers we are level in that regard 🙂
Maybe someone else can try the MA750 with a Fiio DAP and something else and share the results.
Always forget Mr. Ivor : “Tiefenbrun also battled the thinking, since Edgar Villchur, that the loudspeakers were the most important, instead asserting primacy of “the front end”, saying that the quality of sound of the source was key”. So I was just heard the Clips sound signature (no EQ). Simply the 750s plays better with it. My capability of describe the SQ isn’t enough to say what I heard – after few beers definitely zero. Peace out!
Thanks for the response, I will look into those earphones. Have you had the chance to listen to some of the other budget options out there like the Zero Audio carbon tenore or TTpod t1-e?
Yeah something like a Philips Fidelio S2 or VSonic GR07 would be better for classical. There are less warm and bassy, more clear and accurate-sounding in-ears. Even something like the inexpensive Ostry KC06 would give you a more clear and airy sound than the EPH-100. But it won’t sound that great with electronic music.
As for on-ears, not sure which of the current crop would be best – I’m behind on this year’s releases and most of the new ones I’ve tried have a more colored sound (there are over-ears that are better, though). The on-ear headphone market is huge so I’m sure there are many suitable options that I just haven’t had a chance to hear.
Also just a note, but I don’t agree with the 4/5 build quality on the EPH 100s. 3.5/5 is more like it, microphonics are an issue, cord is fairly thin and the stress relief isn’t that great either. I feel that if I accidentally yank these the wires would come out and I’d have to to open it up and resolder them. The aluminium housing is quite solid however and that is really their only redeeming trait to me.
I ended up with a pair of EPH 100s. Couldn’t be happier. Excellent bass impact and a fun v shape sound signature work really well for my electronica. However I purchased a pair of $12 Koss KSC 75s and they are my go to choice for anything not bass heavy like classical and acoustic. I find that the EPH 100s have a certain flavor to them which really doesn’t work well for those genres. Ex. when I’m listening to a classical piece it sounds very unnatural and in some cases congested. With the KSC 75s they have a more airy, “sincere”, lifelike sound to them which I greatly prefer for those genres and are a whole lot more comfortable as well. Interesting how something as cheap as this can compare to a pair of earphones ten times the price.
Are there any on ears/in ears that are a significant upgrade from the KSC 75s that you know of? Ideally < $150?
Beats me. Faster and fuller body are not usually things that go hand in hand, and these are single dynamic driver in-ears so they tend to be pretty stable across sources. Maybe one of the DAPs has an EQ preset or something? I have a Clip but no X3 so I can’t verify.
Hi there,
Listened with Fiio X3 mk1. – before few hours tried with my wifes Clip + —-> faster , fuller body . Whatta hell? Joker?
So, My DN-1000’s are here. I listened to them twice on Metro on my iPhone and liked them a lot. Listened to them on Macbook and LOVED ’em. Mids are fabulous, treble is good. Bass could be better but nothing unsatisfactory. I have been listening to them for a while now and they are not at all fatiguing. Thanks a lot for your recommendation!!
All of those things can apply to the DN-1000 depending on what you’re comparing it to. But hopefully it’s an all-around upgrade to the CKS-77x (which I haven’t tried) 🙂
Thanks for your reply! After a long thought choosing between EPH-100 and DUNU-1000, I decided to buy DUNU DN-1000 for $179+9.99 (Protection plan). They should arrive by late tomorrow. This will be an upgrade from Audio Technica CKS-77x which I find quiet engaging but instantly very fatiguing, often very muddy and sometimes too bright. I will post my first impressions about DUNUs when they arrive. Thanks a lot for your help..
Ultimately it depends on which sound signature works best for your ears and tastes, less so for the genres you listen to. The answers to your questions about the detail and vocals are yes and yes. Both are a compromise in one way or another, but depending on the listener one compromise should be preferable, which is how I try to arrive at my recommendations.
The DN-1000 would be a step up in things like midrange clarity and resolution, but a slight compromise in smoothness (especially compared to the EPH-100) and warmth/fullness. I tend to not value those as much as other things when it comes to your genres so I’d consider it a good upgrade. The DN-2000 is even better, but by a small amount that you may or may not appreciate without trying the DN-1000 first. If you can get a DN-2000 for $250 I’d say go for it, but if it’s $100 more than the DN-1000 it might be best to just take the middle option in this case.
With the DN-1000 you ran into a problem called “coherency”, which exists in pretty much every hybrid. The dynamic and armature drivers always differ from each other in attack/decay and other subtle ways. Most people don’t hear it or aren’t bothered by it, but if coherency is important to you it’s best to stay away from most hybrids. The DN-2000 is better in this regard than the DN-1000 because the bass is tighter and more level, but ultimately it’s just more of the same. It might be enough of an improvement, but it might not be.
The IE 800 fits the bill as far as bass quality and midrange resolution goes, but the treble could go either way. Sennheiser developed a proprietary dampening system for this earphone that’s meant to provide a smooth treble response in the ear with a shallow fit. The trouble is, the IE 800 only takes the stock eartips, and for some people (like me) the stock eartips don’t seal shallowly enough to let the system do its job. So, I never got the smooth treble you’re supposed to get out of the IE 800 and it’s always sounded a little tizzy to me. On this more than anything else YMMV. I don’t find the IE 800 to be particularly musical, just bassy and v-shaped but not in a bad way. I typically only recommend it when someone wants a bass-heavy high end earphone, because ones that have lots of bass AND don’t sound bloated are few and far between.
I generally prefer the MA750 to the SE215 in pretty much every way (barring the sound signature differences that may make the SE215 more suitable in certain situations). The SE215 is also going to be more different from your S4i in overall tuning.
Hello ljokerl
Kudos for excellent review! Many times in comments I’ve seen you recommend EPH-100 over MA-750i because of its sound signature. I listen to mainly classical music or acoustic tracks with vocals a little bit pop. I wonder which of these two be better for me for my taste? Will I be missing out on treble details in EPH-100? Will male vocals sound too subdued on 750’s? Can you help me out please? Also, can you please suggest if there is any other earphone under ~250$ that would be drastically better than either of these for my tastes?(DN-1000/2000?) ( I will consider increasing my budget if something would be significantly better than 750 or EPH-100). I listen to songs in metro on my iPhone so good isolation is must.
Trying to upgrade from s4i. Can’t decide between rha ma750i or shure se215. Liked the sound of the s4i but always more
I should have mentioned as a point of reference that I previously owned the DN1000 which had nice sub-bass but it felt disconnected from the rest of the soundstage and way too slow. I actually liked the mids and treble of the DN1k but the slow bass killed faster rock music for me.
As far as an upgrade to the MA750, I would like deeper, faster (non-bloated), textured bass; more treble extension (the MA750 is a bit metallic to my ears and not well extended/detailed); better midrange separation (MA750 can feel a bit cramped with complex music). I can deal with more treble than the MA750 as long as its not sibilant and provides greater extension/sparkle.
Aside from a focus on percussion (deep, fast bass) I really just prefer something thats “musical” with that PRaT factor where its easy to just get lost in the music.
Ive seen some good deals on the IE800 but worry about the cable length and quality. Ive also considered splurging on something like a Westone or Earsonics Velvet if they really offer a significant upgrade in quality past the $300 range.
I don’t have any experience with the CKR10 or FX850.
As for other options, the most important consideration is exactly what you mean by better performance. You can find earphones that are clearer and have tighter bass, but lack the warmth and body of the MA750. Or you can find ones with more bass, but that won’t necessarily bump you up in clarity or resolution. If smoothness is a priority, I’d pass on the DUNUs and probably on the IE800 as well.
The DN-2000 is just plain brighter than the MA750 (in fact, enhanced-bass sets that are also as smooth/forgiving as the MA750 are few and far between). The IE800 is specifically designed as an easy-to-fit (read: shallow fit), easy-to-drive IEM, but the treble is not always smooth. They actually use a special tuning mechanism to try and smooth out the treble, but it is not 100% effective in my experience. I tend to find them a little splashy on the whole, though not as bright as the DN-2000. Other than that, they are great if you can get them for $300.
The smoothest enhanced-bass IEM I’ve tried in the $300 range is probably the Sony XBA-H3, but as expected it give up some clarity in comparison to a DN-2000 or IE800 in exchange for that mix of warmth and smoothness. Nothing you can do about that – it’s normal. Again, it really comes down to what you’re finding unsatisfactory with the MA750 and would like to see improved.
Joker, Ive owned these (MA750i) for a while now and am looking to upgrade to the next tier. Some IEMs that have caught my eye are the ATH CKR10, JVC FX850 in the $200 range or possibly the DUNU DN2000J or IE800 in the $300 range if they offer that much better performance for the price.
I listen to a lot of metal (Insomnium, Dark Tranquility, Metallica) and rock/classic rock (Pearl Jam, DMB, Mumford & Sons) and absolutely have to have deep, punchy, fast bass and prefer something not too hot in the treble (which worries me about the DN2000J). Im also not a fan of IEMs that require deep insertion or need foam tips to sound their best. Oh and easy to drive from an iPhone is a plus. Any thoughts?
Oh! Thank you 🙂 I look up to your guide before buying any pair of earphones! Awesome job mate.
I’m not familiar with the X5 but I can’t imagine what would cause this. The MA750 is not a BA earphone and doesn’t react to source as much as like a Shure or Westone multi-BA, so I don’t know what the problem is.
I own the RHA MA 750i and ATH M50X and listen to them on a Fiio X5 2nd gen. M50s sound fantastic with the X5 but the RHA sounds flat! The bass response is flat. When I use them on my phone, bass sounds full and the right amount(the way I like them). I tried EQing on X5 but that didn’t help either. Is there anything I can do to improve the sound of MA750i using X5?
Yeah, that’s quite a wide gamut of earphones you’re considering. Definitely recommend taking your time with deciding which direction to go next.
Can’t say anything about the new T20 but I’m not really a fan of the T10 in comparison to the more balanced MA750. It could be an upgrade if you specifically want more bass than the MA750 can provide, but otherwise not so much. Lots of other options out there that I’d rather have, including all the ones you listed.