REECHO SG-01 OVA Review: Reaching a natural balance

-Beautifully balanced tonality with natural cohesion
-dense lush timbre
-spot on instrument and vocal tone
-well rounded warm bass with heavy impact
-good notes weight in mid range
-full bodied male and female vocal
-no sibilance nor harsh peaks
-decent macro resolution
-versatile and forgiving
-great construction
-safe tuning that is near impossible to dislike
-price value

-average technicalities
-average resolution
-average attack speed and control
-blurry imaging
-guilty pleasure bass bleed colouration
-lack of treble sparkle and air

TONALITY: 8.5/10

REECHO is a rather new earphones company that have been around for about 2 years, but that has been very prolific in IEM making with about 7 models offering that even include an earbuds that I own and find very impressive, the RC ONE. They mostly create hybrid and single dynamic drivers IEM, and their hybrid SG-03 seem to be their best seller, gaining good praise among budget audiophile.
Today I will review their second version of SG-01 serie, the SG-01 OVA, which is a single dynamic driver using a 10mm graphene composite diaphragm driver with a powerfull n52 magnet.
As a big fan of dynamic drivers IEM, let see if the OVA is special and stand apart of the rest of sub-100$ earphones offering.


I’m a fan of all metal construction, and this is what Reecho offer, with a beautiful bhousing design that remind sea shell. The glossy bleu painting add light reflection richness, making the color go from dark blue to electric purple.
The housing is quite small too, as well as the nozzle is large and short but doesn’t have fitting issue. 2pin connector feel solid and promise longer durability than MMCX if your obsess about cable swapping like me. Strangely, the mesh seem to collect dust or particule, that nit picking but something to note with this type of mesh.

When it come to cables, it’s a decent basic silver plated one, it’s not bad to the point of urging you update it even if yes the OVA will benefit from higher end cable, like the Tri Grace-S which improve balance and clarity.

For 50$, the packaging presentation is very impressive, though a bit puzzling since it’s write YUSICON OVA and not Reecho SG-01 Ova on the front. Now, i’m not sure i’ve name these IEM correctly, but in Penon store it’s sell under Reecho name, while on Ali Express you can find it under Yusicon brand. Anyway, as said package reflect higher price range, it’s a big box and include a nice carrying case as well as generous amount of diversify silicone ear tips (9 pairs), including the famous yellow wide bore KB07 which is the best one for this IEM. All in all, we get more than asked for in term of whole package here and that’s very appreciate.


(Gear used: Tri Tk2, Tempotec E44, Xduoo Link2 Bal)

The tonality of OVA is a gently bright V shape, thick and balanced as a whole, with warm round bass impact, smooth yet fowards mids and bright energy coming from full mid treble wich add crunch and bite to attack without feeling overly boosted. I’ts the kind of IEM we sometime find warm when big bass occur or bright when it’s energic rock or jazz, but we never find it dark sounding, just not particularly clear or boosted in details.
OVA is the type of IEM that make you forget about critical listening technicalities and focus on musicality as a whole, since both balance and timbre are natural, we are in for an immersive and lively enjoyment.

The bass is very well done, yet not a master of technicalities or sharp definition, it have a round heavy weighty slam to it, thick and muscular yet not boomy or artificial in resonance. It’s the opposite of a boxy bass presentation, and perhaps technical limitation come from driver speed limit here or slight lift in upper bass-lower treble since it feel a bit sticked to the mid range, opaque in resolution and lacking proper separation. Still. It’s so far from bad that we are into ”mature guilty pleasure” here I would say, in the sens it’s not boomy, not overly boosted, yet physical in impact and heavy in mid bass presence. Extension is not the most linear and have a compress sustain when it come to rumble that thicken the resonance and give more relief to vibrancy. Think about the bass of Tanchjim Tanya but a bit faster and better rounded in impact. Slight sub bass roll off would only be problematic for critical listening of acoustic bass line, which will feel a bit scooped in natural resonance, still it will not affect the tone which is natural as well as timbre which is dense enough. Cello sound full bodied and natural too, tough not very textured it’s lush, natural and innofensive in tone and have enough 50hz vibrancy.

With the OVA, it’s all about bass and mids interdependancy, which embrace themself organically and deliver a natural appealing balance with great note weight and smooth timbre. I like those mids that doesn’t feel forced or overly excited in upper mids yet grand in presence fullness. I know we are in good mids territory when piano sound both heavy enough in note weight and full enough in timbre, and this is the case with OVA, piano sound natural, not too warm in definition yet softed in higher harmonic edge. To achieve this type of versatile and full sounding mid range, their a trade of in clean clarity and sharp resolution since it’s a bit warmed by extra low end harmonic boost, yet not dark as said or lacking in attack energy. In fact, timbral balance is very good both in male and female vocal which doesn’t sound artificial, lipsy or overly focus on texture or extra body. These are ”harman target” like vocal presentation but with a bit extra mid treble energy that add a bit of extra breathyness to female vocal, in an appealing way. I’m very impress by versatility of vocal performance here since while not agressively fowards, both male and female vocal have focus presence and never feel recessed, keeping the singer upfront of instrument but keeping it part of the music whole too. You focus on singer with the OVA, or main instrument of the band, so it’s not an IEM that magnify clarity and imaging.

Ok, now, if i’m as much fascinated by bass and mid range, it’s because their a trade off somewhere which is treble crispness and extension: it’s softed in edge and roll off on top. Again, like the Tanchjim Tanya but a notch better. The OVA is all about macro-resolution lush cohesion, and resonance and decay of instrument seem dampened, polished in edge and texture in a tastefull way that doesn’t affect tone naturalness or make the dynamic dull and overly lean. You know these vintage speaker that sound great but doesn’t deliver high amount of micro-details or accuracy but still sound highly immersive, musical and addictive….the OVA deliver this kind of analog euphonic joy and it’s not something we find often in Chifi IEM world. This mean their a hint more of low harmonic focus than high harmonic that will mostly affect sens of air between instrument as well as sparkle, snap and sustain decay. We can say it’s a safe tuning choice, but at least it doesn’t sound boring in dynamic nor ackward in instrument tone.

Now, after all this praising, it’s time to go grumpy a little and this will begin with the soundstage presentation wich is just average in wideness and tallness while lacking in deepness due to thick opaque macro-resolution. It feel like i’m sit in a couch with 2 bookshelf speaker on each arm. I’m swallow in a thick dense stereo focused spatiality.

And it doesn’t do good for imaging capacity, which are very limited to say the least. It lack precision in instrument placement as well as proper space separation clarity. Overall resolution feel blurry and warm, which make instrument layers to close to each other and hard to pin point.



Both are V shape but the OVA is warmer, thicker and more cohesive as a whole so better balance due to less boosted sub bass and treble making it less spiky V shape. Bass of OVA is better rounded and have more weight while the Youth have more rumbly boom and more tamed kick drum and upper bass. Yet, OVA low end mix more with the mids and thicken warm them yet feel less detached in impact than the Youth. Mids are lusher and more bodied with the OVA, less fowards in upper mids and less bright in resolution, here the Youth seem to have better separation and transparency but thinner timbre, lighter note weight and more reccessed male vocal. Treble is very different here, way more bright and extended with the Youth, definition is sharper, micro details better extracted making the OVA feel rolled off and dark on top. In term of spatiality and imaging, the OVA is notably inferior, both in sens of openess, instrument separation and airy clarity. Technical performance like attack speed and control is superior to with the Youth, to the cost of sounding more clinical or artificial too.

Let say tonality is very different here, OVA sounding more musical and organic in balance while Youth sounding more technical and V shape analytical. For vocal and timbre, OVA is certainly better.


Again, brighter V shape for the HE01, more focus on texture and a bit more boosted in upper mids. Bass is dryer, more textured and thumpy but less boosted and less thick in slam. It doesn’t warm as much the mids too, so HE01 is more energic and vivid in clarity. Timbre is thinner and note weight is lighter in mids too, we have less pina gain with the OVA it seem but attack is slower and less controled even if less agressive and prompt to fatigue. Treble is quite similar, but a bit more snappy with HE01 so imaging is again a bit better, while soundstage is similar but a hint deeper airier.
Simply put, the HE01 is very similar in tonality but brighter way, as well, male vocal are a bit less present and fully bodied with HE01. Smoother or more vivid balance? This is your choice here, but OVA is more safely tuned and overall fuller sounding and more musical to my ears.

VS HZsound Hearth Mirror

The sub-100$ (and up) champion of technicalities can’t be touch when it come to resolution, attack speed, transparency, imaging etc…making the OVA feel very limited in those department, but when it come to musicality, I can imagine lot of people prefering smoother balance of the OVA.
The OVA is notably bassier, the low have more body and slam, but it mix up more with mids, which can be a plus for male vocal since they are more bodied than Mirror but when it come to fast kick drum accuracy and impact definition the Mirror is less boomy and offer a more linear and extended sub-bass too. The mid range is thinner and dryer with the Mirror, warmer and thicker with the OVA, note have more weight too but a more fuzzy definition, while imaging and level of details is notably better with the Mirror, vocal are fuller and better rounded in warm timbral balance with the OVA, making it more mid centric than the Mirror yet less sharp in clarity. Mirror Treble is just incomparable here, way more vivid and detailed, faster and snappier in attack as well as more sparkly and airy, making the OVA feel very dark and abstract in resolution.
These 2 in fact complement each other very well, since the OVA focus on timbre naturalness and note weight and offer a warmer W shape with more boosted bass than crisp- neutral and analytical HZ Mirror. As expected, Mirror can’t be dethroned as technical performance king, yet tonaly speaking the safer OVA tend to captive us more with it’s vocal presentation as well as heavy warm bass hit.


The Reecho SG-01 OVA is one of these IEM that is easy to love at first listen, yet continue to grow on you with the time due to an immersive and naturaly balanced tonality that focus on dynamic weight, bass slam and vocal presence. Tone is right for all instruments, with dense lush timbre and everything is stick togheter in a gently warmed resolution that doesn’t forget to add extra treble bite to avoid a dark musicality that could lack energy.
We are in middle of fun and mature tuning with the OVA, which is a refreshing take on V shape tonality since mid range doesn’t feel recessed, just thickened by bass.
This type of musicality will please fans of Tanchjim Tanya, Whizzer HE01, Blon BL03 and FIIO FD1, and while it will be a sidegrade in term of technical performance, it will be an upgrade in term of tonal balance.
Reecho proof to be a very competent IEM company when it come to tuning cohesion, as well as being competitive in sound value, it’s the first IEM I test from this company but will sure continu to follow their evolution since the potential is there.
Highly recommended!


PS: I want to thank PENON AUDIO for sending me the OVA after I manifest them my interest to review them. It’s my first review for this audio distributor and i’m not affiliated or compensate in any way for this review. As always, i’m 100% independant of mind or any self-interest bias.

You can order the Reecho SG-01 Ova for 50$ and enjoy fast shipping from this trustable store:

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