Oriveti O400 In-Ear Monitor Review








Oriveti O400 In-Ear Monitor Review




Oriveti is an innovative brand that was founded in 2015 to provide HiFi quality audio products for the daily use. The engineering and design team is experienced within the earphone industry and has released many popular products that are hybrid IEM’s such like the Primacy, OH300, OH400 and full balanced armature driver IEM’s like the flagship model O800 that we have had reviewed before.

  • The motto of the company is: LISTEN INSPIRED

The O400 is the brand new Universal In-Ear Monitor of the company that features 4x Knowles Balanced Armature Drivers per side, which are located inside a premium looking hand made resin shell.




I would like to thank the Oriveti for providing me the O400 In-Ear Monitor for review purposes. I am not affiliated with Oriveti beyond this review and these words reflect my true and unaltered opinions about the product.




Price and Availability:

The actual retrial price for the Oriveti O400 is about 399,00 USD. More information’s can be found under the link below;





Package and Accessories:

The Oriveti O400 came in a relative small black box that looks pretty similar to those go the O800 flagship IEM. This box has a form of a cube that has the brand logo and their Motto “Listen Inspired” on the top. This box is wrapped with a dark blue cardboard with some brandings on the top.

Inside the box are the following contents/accessories;


  • 1 pair x Oriveti O400 In-Ear Monitor
  • 1 pcs x 8 Core Detachable Cable with 2-Pin connectors
  • 1 pcs x Leather Carrying Case
  • 3 pairs x AZLA SednaEarfit™ Xelastec Silicone Ear Tips
  • 3 pairs x White Silicone Ear Tips with small opening
  • 2 pairs x Black Silicone Ear Tips with small opening
  • 2 pairs x Double Flange Ear Tips
  • 2 pairs x Foam Ear Tips (M)
  • 1 pcs x Cleaning tool
  • 1 pcs x Airplane adaptor
  • 1 pcs x 6.35mm to 3.5mm Connector


The O400 comes with a very rich accessories package same like the flagship IEM O800.

What I really like about the O400 is that it comes with various set of Silicone and Foam ear tips that includes also the AZLA’s SednaEarfit™ Xelastec Silicone Ear Tips, which is a great addition.

The stylish leather case that we have seen with previous models has a rounded shape shows a high quality craftsmanship.

Inside the box are also one Airplane adaptor and a 6.35mm to 3.5mm connector which are nice additions.






Design & Build Quality:

Oriveti offers with the O400 an IEM with a 4x Knowles Balanced Armature Divers setup per side that are integrated in to a hand made high quality semi transparent resin shell in purple color that shows a very good craftsmanship. The monitor shape is based on those of the flagships model O800 that has an 8x BA diver setup per side.

On the front of each monitor shell are the brand logos of the company, which are the Oriveti branding (right earpiece) and a circular brand logo (left earpiece) that are both in gold color.

At the inner surface of the monitor shells are the sound nozzles that do have four openings for the 4 way crossover design.

The sound nozzles don’t have any visible filters on the top same like Custom IEM’s, which means you have to be careful and use the cleaning tool to avoid the insertion of dust or earwax.

You can see here the Balanced Armature drivers with the Oriveti branding on the top that are visible under the semi transparent resin shell, which is a nice experience.

On the top of the monitor shells are the 0.78mm diameter 2-Pin female connectors that do offer a pretty tight connection.

The O400 comes with the hand made 8 core High Purity Silver Plated Copper Wire (SPC) cable that features 0.78mm diameter 2-Pin connectors.

The nicely braided detachable has a brown PVC isolation and features transparent heat-shrink ear guides near de 2-Pin connectors for a more comfortable over ear wearing experience.

The 2-Pin male connectors do have a metal housing in black color which sports also left and right indicators.

The cable has also a y splitter and chin sliders which are in black color.

The 3.5mm TRS headphone plug is gold plated and has a straight profiled metal housing in black color and a strain relief for additional protection.



Technical Specifications:

The Oriveti O400 fits pretty comfortable in to my average sized ear concha’s, however it is possibly not to fit that comfortable if you have relative smaller shaped and ears. The passive noise isolation of the O400 is above average, which makes it ideal for the use in relative high noise intensive environments like bus, subway, train, etc.





Technical Specifications:

  • Driver Configuration              : 4x Knowles Balanced Armature
  • Impedance                            : 15Ω
  • Frequency Response           : 10~40 KHz
  • Sensitivity                              : 108±3dB/mW, 1000Hz
  • Distortion                               : <1%
  • Sensitivity                              : 110±3dB/mW, 1000Hz
  • Distortion                               : <1%
  • Cable                                    : Handmade 8 Core Silver Plated Copper with 2-Pin connectors
  • Plug                                       : Gold-plated 3.5mm Stereo Plug
  • Cable Length                        : about 120cm





The Oriveti O400 is a quite efficient In-Ear Monitor thanks to it low impedance of 15Ω and a sensitivity of 108dB, which makes to use for sources like Smartphone’s, Tablet’s and DAP’s with low driving power capabilities.




Equipment’s used for this review:

  • IEM’s              : Oriveti O400, FiiO FA9, HiBy Crystal6
  • DAP&DAC’s   : iBasso DX300, FiiO M11 Pro, Hidizs AP80 Pro





Albums & tracks used for this review: 

  • Hayley Westenra – Odyssey Album (Dezzer HiFi)
  • Dionne Warwick – Walk On By (Flac 16bit/44.1kHz)
  • Sarah McLachlan – Angel (Flac 24bit/48kHz)
  • Sertap Erener – Aşk (Flac 16bit/44.1kHz)
  • Edith Piaf – Non Je Ne Regrette Rien (Flac 16bit/44.1kHz)
  • Diana Krall – So Wonderful (DSF)
  • Aretha Franklin – I Say A Little Payer (Flac 24bit/96kHz)
  • David Bowie – Heroes (Flac 24bit/192kHz)
  • Barry White – Just The Way You Are (Flac 24bit/48kHz)
  • Isaac Hayes – Walk On By (Flac 16bit/44.1kHz)
  • Sting – Englishman in New York – (Flac 24bit/48kHz)
  • Eric Clapton – Wonderful Tonight (Flac 24bit/96kHz)
  • U2 – Sunday Bloody Sunday (Flac 16bit/44.1kHz)
  • Portishead – It Could Be Sweet (Spotify)
  • Charly Antolini – Duwadjuwandadu (Flac 24bit/192kHz)
  • Chopin – Nocturn No. 20 In C-Sharp Minor (Flac 16bit/44.1kHz)
  • Fazıl Say – Nazım Oratoryosu (Live) (Flac 16bit/44.1kHz)
  • Vivaldi – Le QuarttroStagioni “The Four Season” (Deezer HiFi)
  • Otto Liebert& Luna Negra – The River (Flac 24bit/192kHz)
  • Bro Safari, UFO! – Drama “Party Favor Remix” (Deezer HiFi)
  • Christian Reindl (Lucie Paradise) – Cernunnos (Spotify)
  • Armin Van Buuren – Vini Vici (Deezer HiFi)
  • Really Slow Motion – Deadwood (Deezer HiFi)
  • Jo Blankenburg – The Magelan Matrix (Spotify)
  • Massive Attack – Angel (Flac 24bit/48kHz)
  • Lorde – Royals (Flac 24bit/96kHz)
  • Lunatic Soul – The Passage (Flac 16bit/44.1kHz)
  • Deftones – My Own Summer (Shove it) (Flac 16bit/44.1kHz)
  • Metallica – Sad but True (Flac 24bit/96kHz)
  • Opeth – Windowpane (Flac 16bit/44.1kHz)
  • Megadeth – Sweating Bullets (Tidal Hi-Fi)
  • Rush’s – Leave That Thing Alone (Flac 16bit/44.1kHz)
  • Slayer – Angel of Death (Spotify)s
  • Liquid Tension Experiment 2 – Acid Rain (Spotify)
  • Yosi Horikawa – Bubbles (Spotify)






The Sound:

The Oriveti O400 offers a mildly warm tonality with a balanced overall presentation, no area in the sound spectrum sounds overdone / over powered. It shows a slightly coloration that comes from the lower frequency region that adds the midrange and treble area nice timbre. It shows a linear bass response with good level of speed, decay and control. The midrange sounds pretty clear and detailed, while the treble area is natural and highly controlled, with adequate sense of sparkle.



The Oriveti O400 shows a linear bass response with great sense of speed and control thanks to the well-tuned Knowles Balanced Armature Diver. It offers in general a very comfortable and pleasant to listen to subbass presentation with a moderate level of depth and rumble, without to add additional intensity and unwanted muddiness to the overall presentation when I do listen songs like Christian Reindl’s “Cernunnos”, Lorde’s “Royals” or Massive Attack’s “Angel”.

The subbass rumble is maybe not as strong like the ones that can are produced with dynamic drivers, but the quantity and intensity should be enough for most genres.

The midbass region of the O400 sounds in general slightly more highlighted and shows a nicely soft tonality with good amount of detail retrieval. The midbass is reproduced with a pretty good sense of tightness and impact, rather to sound overly boomy. It doesn’t shows any negative situations like a midbass hump or muddiness when I do listen to Instruments such like, bass guitars, drums, violas or cellos.



The Oriveti O400 shows a pretty natural and close to neutral midrange presentation with a hint of coloration that is produced in the lower frequency region. The level of clarity and airiness is above average, while the general resolution in this area is pretty impressive when I do listen to both vocals and instruments.

The Oriveti O400 shows a good performance in terms of upper midrange extension, detail retrieval and transparency, without have any unwanted sibilance or sharpness when I do listen to female vocals like Diana Krall, Edith Piaf or Sertap Erener or to instruments like violins, side flutes or pianos.

The lower midrange of the O400 shows a moderate level of depth and intensity. Male vocals like Barry White, Isaac Hayes up to David Bowie and Elton John are reproduced with a nice sense body and smoothness. The O400 is also quite successful in this area when I do listen to instruments such like an acoustic guitars, contrabass or trumpet.



The treble range of the Oriveti O400 has a mildly bright, almost close to natural tonality with a soft, airy and smooth character. I really like the gentle, buttery smooth and mature treble tuning of the O400, which makes it ideal for longer listening periods. The general resolution in this area is on a fairly good level.

The transitions from the upper midrange towards the lower treble area are quite controlled when instruments do play with high level of distortion. The lower treble area is able to produce a good level of clarity and definition, while the extension is on a sufficient level when I do listen to instruments like snare drums or cymbals.

The Oriveti O400 has mildly pronounced upper treble tuning that offers a natural and smooth presentation in this area, which is neither sharp nor too aggressive. Instruments like hi-hats in metal music are reproduced in a pretty fast and controlled manner, while crash and ride cymbals don’t show any negative conditions like mixings or over sharpness.

The treble range of the Oriveti O400 sounds in general pretty transparent, airy and spacious, which makes it to a quite ideal IEM for a wide variety of music genres.


Soundstage & Imaging:

The Oriveti O400 shows a good performance in terms of separation and placement of instruments & vocals, while it offers also an airy and spacious atmosphere. The soundstage has in general a good sense of wideness, while the depth of the stage is on a moderate level.




Some Comparisons:


Oriveti O400 versus FiiO FA9 (Standard Mode):

Both FiiO FA9 and the Oriveti O400 do have a mildly warm tonality and do offer a pretty clear and smooth presentation.

The subbass region of the FA9 is shows more subbass depth, extension and rumble, while the O400 is more successful when it comes to the decay and clarity in this area. The midbass area of the FiiO FA9 sounds more pronounced and impactful compared to the Oriveti O400, which is the better IEM when it comes to the resolution and control in this area.

The midrange of both IEM’s is silky smooth and shows a warmer than neutral tonality. The midrange of the Oriveti O400 sounds more transparent and airy. The lower midrange of the FA9 has more depth, body and intensity, which makes it more suitable for male vocals, while the upper O400 offers a better sense of upper midrange brightness and clarity, which is an advantage for female vocals.

The treble range of both IEM’s is silky smooth and highly controlled. The Oriveti O400 has the upper hand in terms of upper treble extension airiness and sparkle, while both do show a similar performance when it comes to the lower treble clarity and definition.

The soundstage of both IEM’s is suitable for a precise separation and placement of instruments and vocals. The Oriveti O400 has the upper hand in terms of soundstage wideness, while the FA9 has the slightly edge when it comes to the depth of the stage.




Oriveti O400 versus HiBy Crystal6:

The Oriveti O400 shows a more balanced presentation and a better sense of natural timbre compared to the HiBy Crystal6 that sounds a bit too bright and unnatural in direct comparison.

The subbass region of the Crystal6 has slightly more depth and rumble, while both IEM’s do offer a similar performance in terms of decay and general resolution. The midbass region of the Oriveti O400 is a tad more highlighted, impactful and shows also a better sense of clarity and detail retrieval especially in faster and more complex passages.

The midrange of both IEM’s has a slightly warmer than neutral tonality, while the O400 offers more natural timbre and betters level of control, especially in the upper midrange region, where the HiBy Crystal6 prone to sibilance and harshness. The level of clarity of both IEM’s is top notch, however the O400 is the IEM with the more realistic instrument and vocal presentation in this area.

The treble range of both HiBy Crystal6 is more highlighted, bright and offers a higher level of extension. However, the Oriveti O400 offers a silky smooth presentation which is more ideal for longer listening periods.

The Oriveti O400 has the upper hand in terms of soundstage wideness, while both IEM’s are pretty close in performance when it comes to the depth of the stage.




The Oriveti O400 is the perfect choice if you are in search for an In-Ear Monitor with a natural timbre, balanced and silky smooth presentation that should be suitable for a wide variety of music genres. Moreover, the O400 is also a beautiful looking product with a high quality monitor shell that comes with a rich accessory package that includes even a high quality leather case and AZLA’s SednaEarfit™ Xelastec Silicone Ear Tips.




Pros & Cons:

  • + Very Well Coherent & Natural Presentation from the Top to the Bottom
  • + Linear Bass Response with good level of Speed, Control & Resolution
  • + Midrange Clarity and Detail Retrieval
  • + Silky Smooth yet Detailed Treble Tuning
  • + Premium Build Quality and Accessory Package


  • – Average Soundstage Depth
  • – Not for Bass- or Trebleheads
  • – Monitor Shell is a bit large for Peoples with smaller Ear Concha


Thank you for the Read!



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