I've had enough time with both now to give an enduring opinion on both. First of all, thanks to
@F700 and Oriveti for making this tour happen - I appreciate these are not easy to organise. In the UK I very rarely get to hear IEMs before buying so this was a welcome opportunity.
Oriveti O400
Tonality – subbass emphasis, neutral midrange with a well extended treble; W-shape
Bottom line:
A very adept and versatile tuning with good technicalities and a solid timbral accuracy for a BA. Excellent build quality and ultra-comfortable. Almost nothing to grumble at for the price.
The details:
- First impressions are usually most telling for me. I was immediately impressed by the body and note weight to this all-BA set. Instruments are very organic with a natural attack and decay of bass strings and other instruments. The second thing to grab me was the stunning bass. Its well aerated, impactful, nuanced and doesn’t overly warm the midrange.
- The midrange is close to my favourite Etymotic pinna gain and upper midrange never, ever offends and really encourages you to boost the volume to enjoy the bass (be careful).
- The treble extends well and there’s plenty of detail to be enjoyed.
- Technicalities-wise, the soundstage is intimate with reasonable depth but feels quite narrow laterally. Instrument separation is quite small but imaging is good. It doesn’t feel congested and manages complex tracks really well.
After a good few days listening I say with confidence that this is the most compelling all-BA below $500 that I’ve listened to and suits pretty much all genres. I can’t imagine anyone feeling short-changed at the current retail price – superb value for money.
Oriveti OV800
Tonality – midbass emphasis, neutral midrange, well extended treble; W-shape
Bottom line:
If you want a slightly warmer but clearly more detailed and spacious listen than the O400 this is it. The midrange and treble sound very similar to my ear and the tuning philosophy is consistent. My favourite switch position is 00 (bass switch off, treble switch off). The O800 reference. For me it doesn’t need one iota changing in its tune (some will disagree due to some subbass roll off) and the switches are somewhat redundant in my case.
The details:
- First impressions moving from the O400 was of greater instrument separation and with a more spacious soundstage. Vocals are further back and generally the bigger picture of any composition is much easier to appreciate. The O400 is the party in an underground disco and the OV800 is the suit and tie event where you’re at the centre of the auditorium.
- Bass is competitive with the O400 but takes a different approach with greater midbass emphasis and more subbass roll off. A flick of the bass switch can compensate for this but you lose some detail and coherency in the tune.
- The midrange is given plenty of room to breathe and has excellent depth with vocals and instruments that have more presence and detail than the O400. Due to a slighter brighter upper midrange than the O400 it emphasises some BA-timbre but it’s something I’m happy to accept.
- The treble air is formidable and it complements the space and imaging that the OV800 really leans into in its presentation.
- Soundstage is wide, very deep and instrument separation and layering is excellent.
I have had moments with the OV800 that engaged me deep to my core. It seems very hard for some IEMs to present the bigger picture and engage at the same time - something that lies within a well-executed and positioned midrange. They assault you with the midrange at the expense of the listening perspective and the X-factor that you can derive from the music being greater than a sum of its parts. This is not the case here, the OV800 has achieved a perfect balance of midrange forwardness and positioning. Classical and choral music sounds spectacular for this reason.
I was listening to Vox Clamantis, a Gregorian chant / choral group on their album Ieremias and even shed a tear (I rarely get emotional!). The space and air of OV800 brings the old church ruins and the echoing voices within to life. You can even appreciate water run-off falling off the walls and hitting the floor beyond the singers.
Final Word
Both the O400 and the OV800 are excellent IEMs, there’s no doubt. The O400 offers great value for money and is highly competitive. The OV800 for over double the cost is a harder sell but I do believe it justifies itself with its level of refinement, its ability to immerse and having executed such a fantastic midrange. Personally the OV800 (or the O800 without the switches, provided it sounds the same) is the one for me. In fact, I’m saving with the intention to purchase one as we speak!