Been using Truthear Nova for couple of months. Thought about sharing my impressions here for anyone looking to get these iems.
Flashy is the theme of this iem, and not for the better unfortunately.
Their previous flagship, the hexa seemed like a no frills product with understate look, normal sized housing and a tuning that was pretty much neutral. I personally haven't heard the hexa but the people in the hobby revere it for its price and for buckling the harman tuning trend.
Truthear, unfortunately went the opposite route for the Nova.
The
housing is big with a flashy faceplate in blue. It fits fine on my ears but I can totally see it being an issue for people with below average ear canals. The cables has matching blue color but it's microphonic due to the fabric like texture. And it's quite uncomfortable after an hour of use due to the pre-formed hooks having too narrow of a radius. We also get a pouch which is pretty fancy with a heavy duty zipper, but isn't as protective as a hard shell case.
The flashiness continues with the sound too. Barring a slight relaxation in upper-mids, the tuning is pretty much Harman IE 2019 target. A target that the budget iem space has clung to, for better or for worse.
I have two major qualms with harman in-ear target. The
scooped low-mid (~150hz-300hz) and
too much upper-mid(~3khz-6khz) emphasis. It's a one-two punch to disjointed bass and shouty mids. It's got a wow factor on first listen no doubt, but is pretty fatiguing on my ears.
Now the
bass on nova has fantastic rumble thanks to generous sub-bass elevation, and it maintains a good speed even with demanding genres like death metal and dnb. But since it's harman tuned, the mid-bass presence leave a bit to be desired. Kick drums for example have good heft but can sound a bit like it's lacking texture. This is just me being nitpicky though. I don't think anyone would be complaining about the Bass on Nova. It's pretty satisfying with good extension and punch.
Mid-range is another story though. The bass to midrange transition is quite smooth but since the mid-bass is scooped, they unfortunately sound thin and cold. Male vocals sound pretty heady with no power behind them. Female vocals fare a bit better, but even they sound a bit thin and raspy. Actually everything sounds thin, skewed towards upper-mids and lacking in body. The upper-mids glare also results in shrill sounding instruments.
Things get better from this point though.
Nova slightly regains its composure in
treble. I'm a bit treble sensitive so I don't like too much treble tilt. Fortunately, the treble here is quite
smooth and bereft of any egregious dips or peaks. It behaves quite nicely with almost all my music. Cymbals sounds quite natural and extended. Easily the highlight of this iem.
Maybe this is due to the emphasized upper or the smooth treble, but Nova has fantastic detail and instrument separation. Soundstage isn't that wide but whatever is in its stage has good imaging and is also slightly holographic. I've been even tricked into looking behind at some sound cues during my gaming sessions.
So I've pretty much been quite negative on this iem so why buy it then? Couple of reasons.
First, the overall FR while harman has some of the smoothest bass to mid & mid to treble transition. Second, the treble as I said before is extremely smooth with little to no peaks. This makes Nova one of the best iems to play EQ with.
The second point I discovered thanks to the new B&K 5128 measurements that some reviewers have started publishing. I'll highly recommend to read these two articles if you want to learn more about the merits of this new system over the current 711 couplers:
The introduction of the B&K 5128 measurement system heralded a revolution in the headphone hobby with our visualization of frequency response graphs. But how does it compare to the old GRAS standard and how will calibrated graphs improve our understanding of measurements? In this article, we...
headphones.com
IEMs sound pretty different to headphones, but why? Why isn't there an "HD 650" of IEMs? Is it even possible to make one? Join listener as they discuss the Brüel & Kjaer Type 5128 Head and Torso Simulator, the previous generation of IEMs, and where we might be heading to capture the sound of...
headphones.com
If you don't wish to read it then I'll throw a quick TLDR here. 711 coupler measurements are accurate upto to 8-10khz, but 5128 rig has a realistic ear canal which has accuracy upto 20khz. This is the first rig to measure iems accurately in the entire human listening range. Reliable treble measurements is a thing now.
Nova measurements on 5128 show treble that's smooth and fortunately my ears agree too. Using listener's (an excellent reviewer) 5128 rig and
EQ tool, I was able to fix pretty much all of my tonal issues with the Nova. And the best things is that it doesn't need much to make it better. Just two high pass filters:
Filter 1: ON HSC Fc 800 Hz Gain -3.0 dB Q 0.700
Filter 2: ON HSC Fc 8000 Hz Gain 1.5 dB Q 1.000
Gone is the thin lower midrange and glaring upper mids. Midrange now have good body and warmth. The upper-mid is tamed which brings out the treble.
Timbre in general
improves significantly as a result.
This midrange taming also affects the bass, in a good way. The rumble is present but now it also has
fantastic texture and sounds a bit more bouncy now. Best things is that detail and imaging is pretty much the same as before. Instrument separation might sound slightly closed in to some in comparison to stock tuning but I think the slight hit here is more than justifiable.
Do I recommend this iem? I hesitate to, since a listener ideally shouldn't have to resort to EQing to make an iem shine, and I don't wish to make it a norm either.
So I'll recommend the Nova if and only if you want to play with EQ and want to find what type of tuning you prefer. Regular audiophiles should rather avoid this iem. I hope Truthear goes back to the drawing board and come up with a tuning that's better than the flawed Harman IE. Given their good track record I'm sure they will.
Thank you for reading my ramblings. Here's some artsy-fartsy eye candy: