Ya it scales well. Lots more bass after you crank it up.
@Rikudou_Goku Makes sense 
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BEST IEMS UNDER $350 LIST 
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The BC in the Origin really doesnt vibrate?
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It’s not very noticeable. The bass is good, but since they’re doing full range BC it’s harder to pick out in the low-end.
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So switching from the Oracle MK3 to the Bajie the difference in the low-end texture is very very subtle, you do feel the vibrations a little more on the Bajie, aka the reverb goes a little deeper and there’s an ever so slight shaking feeling, but again very subtle. I literally had to close my eyes and A/B the same 15 seconds part of a song multiple times to pick it up, but yes, technically there is a difference.
The Origin on the other hand is much more noticeable because of the bass boost, I swapped some tips and I feel the shaking more now (using divinus velvet right now). I think implementation wise the Origin does the BC better just because there’s more quantity that allows the BC to really show itself, Bajie on the other hand is still TOTL bass quality, but it’s more subtle.
All this just makes me appreciate the Oracle MK3 more for what it can do with 2DDs and no BC lol. The Oracle MK3s are so close to the Bajie bass wise, an ever so slight edge to the Bajie, but basically same level in terms of texture, slam, impact, and control.
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They use completely different types of BC so dont think they should be compared (piezo vs bass shaker afaik).
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My video review of Ziigaat x Jays Audio Estrella is out. Please give it a watch
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Bajie vs Origin bass impressions:
Stock: Origin better
EQ: Bajie better
It’s crazy how much more prominent the low-end is on the Bajie after EQ. The slam and firmness is on another level, that 14.2MM DD is really doing WORK. The Origin still vibrates more, there’s more reverb and bouncier, better separated, but as a basshead… I’d just EQ the Bajie cuz that thing SLAMS. Even after EQing the Origin’s slam/firmness is just not the same - it feels more boomy after EQ.
So guys, today I learned size may matter more than the boner conduction
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The BC in Origin is not used for the bass at all 
It’s tuned for 400-5000/6000hz, if I understand right it’s a full range BC driver but using it for full range added distortion to the sound.
No expert here, I am just quoting from a YT video of theirs.
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Neither is the one in Bajie, they’re both from 400/500hz to uppermids early treble. What I’m saying is all things the same the size of the driver creates the bigger difference because the BC does add more tactility to the low-end, but just not impact wise.
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But yeah large drivers can be real good for bass.
FD15 have a 13.8mm DD, can take EQ quite well. Has in stock form very good quality bass, but a little light. EQ it and it is real bassy fun 
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Ya the bigger driver definitely handles EQ better, the Origin gets a little boomy/not as well controlled when I put in another 3dbs or so… The Bajie on the other hand is still going strong with a 6db bass boost 
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The big difference is the position of the BCD in the case and the volume setting in relation to the other drivers.
In my ZE51B I have it pointed towards my ear.
As my experience has shown, the more recessed it is in the case, the more it transmits vibration.
Thieaudio tuned it not so loud, but in my ZE51B I tuned it louder and it vibrates more.
Here is the frequency response of the BCD from the manufacturer, the driver cannot play from a certain frequency, any driver plays all frequencies, just in the peak is emphasized more different frequency in volume.
I tested half a year ago (you can find it in HBB thread) 14.2mm driver it vibrates and transmits vibration through the cabinet like BCD and plays at a high volume from 10hz. The glue that holds the diaphragm in this driver is very bad.
I will talk to the manufacturer of this driver, maybe they will redesign this driver and then it will be the best bass + bone conduction.
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Nice stuff, whats the model name of the BC driver?
Working on Origin review and would be nice to add it into it, they only have listed its a 11mm BC driver. Also if they are buying a stock BC it would mean they are lying on their product page where its stated it’s new in-house bone-conductor.
Not first time its stated wrong information from brands 
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I don’t believe it’s in-house BC… 
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This is the only 11mm bass shaker full range driver I know of.
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Looks like thats the BC and yeah it is that one from Huayunxin. Looks like Thieaudio just slapped their own logo on it and thats it I guess.
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TANGZU BAJIE REVIEW:
So Tangzu has a new Bone Conduction Quadbrid, the BAJIE, and it’s an edgier take on the meta tuning.
Fit wise it is a chonky boy, so fit might be an issue for some people, as it’s bigger than the Oracles and Hype 4 so, just a heads up there. It’s also pretty tip sensitive, mainly in the treble, and I personally like it the most with Divinus velvets or the Azla tips it came with, but Tangzu did give you a lot of tips to try, so play around and see.
SOUND (BASS)
The overall sound presentation is balanced and clean, slightly edgy, with a very good low-end texture. I know it doesn’t look that much on the graph, but there is a good amount of bass because Tangzu is using a bigger 14.2mm driver making the overall impact and slam feel a lot more than it graphs, and to me the bass is enough for the balanced sound signature that it’s going for.
Now as for the Bone conduction driver they’re using, it’s there, but it’s very subtle in the low-end, and more prominent in the uppermids and treble. For example when I was A/Bing it with the Oracle MK3s which has a dual DD isobaric setup, the bass texture, resolution, tactility, and control is very close on both. I would put them at the same level with the main difference being that the bass on Bajie goes a little bit deeper, there’s a little more reverb in the decay, and it vibrates and shakes a tiny bit more.
The difference is not big enough to justify getting one over the other solely on the bass, as I had to A/B the same 15 sec part of a song multiple times back to back just to pick it out (1:50 mark on 360 by Charli XCX) since again, the BC is very subtle. But where you’ll notice it more is in the vocals and treble since that’s where the PZT BCD and ESTs really makes a difference.
VOCALS AND MIDS
Vocal wise Bajie is at a good distance, not too forward, not too pushed back, and singers feel open and not overly husky or light. There’s an edgier, sharper, and harder tonality to the end notes on the consonants, giving it that extra bite without being ear piercing. Using the singing analogy, there’s a good amount of chest voice for the note-weight, and there’s plenty of air in the falsetto leaning on the sharper side, however, the head voice or power is lacking in the final bits of extension.
So vocal wise, I think both the OG Oracles and RSV is the better pick at around this price point when it comes to the completeness in the extension as the peaks and dips does create some masking, and if we’re strictly talking mids and vocals I would even take the Studio 4s for that balanced and clean sound as the vocals are more forward and clear even though it’s not going to be as good in the technical aspect and the low-end texture and slam.
TREBLE AND PZT
Because Tangzu is using a PZT based driver for both their BC and ESTs, this does give BAJIE a harder and more brittle feeling to the notes which adds that excitement to the sound. I wouldn’t say the timbre is jarring or unnatural, but it is going to be edgier versus something like the sonion ESTs or the sonion E50 BAs which both are noticeably smoother when it comes to the treble and air, although lacking that bite and sharpness some people like - and just to make this clear, it’s not overly sharp, just slightly more in the right amount.
5K PEAK?
The upside to this decision is that the notes have this clarity to them, and the attack feels sharper, giving you that OCD pin-point like imaging. However, the 5K peak can rub some people the wrong way, and I do notice it sometimes on certain songs, or at higher volumes. I don’t recommend it for energetic tracks since it can get a bit much as the Bajie isn’t going to scale as well as something like the Oracle MK3s, or the MEGA5EST Bass, but for slower and more acoustic genres it’s very enjoyable at mid volume as the extra edginess comes across very refreshing, and changes things up by introducing some contrast and excitement to the balanced and clean tuning.
vs MEGA5 EST
I would still take the Bajie over the MEGA5EST 7th as the PZTs adds that little bit of flare and energy to up the dynamics to what would’ve been otherwise a safe and vanilla sound like the MEGA5EST without them. Obviously the Bajie isn’t going to be as smooth and safe as the MEGA5, think of it as an edgier version of the MEGA5 with better bass texture and imaging on top.
So if you found the META tuning to be too boring, but still want something balanced but just more exciting but not like treble head levels of exciting, as well as better bass, then the Bajie ticks the boxes.
vs ORACLE MK3
Now, versus the Oracle MK3s, I think for most people the MK3s are still going to be the better all-rounder since it is less offensive but also not vanilla like the MEGA5EST. The MK3s are going to be airier and smoother in the vocals and treble because of the sonion ESTs as well as being less peaky, whereas the Bajie feels shaper and more tactile in its attack, and it has more dynamic contrast.
Detail, layering, and resolution wise they’re both around the same level with the MK3s being a little more spacious, and the Bajie being more pinpoint in the imaging. And bass wise, again, super similar, even though the MK3 graphs more in the bass, Bajie actually makes up for it with its bigger driver and its BC, so at the end it’s a tie to a slight edge to the Bajie. But really it just comes down to tonality, if you want something smoother and airier with great bass, go for the Oracles, and if you want something edgier, more contrasty with great bass, go for Bajie.
vs THIEAUDIO ORIGIN
Then lastly if you want something bassy that’s not basshead level, but still very well-balanced then I would save up for the Thieaudio Origin. Low-end wise it has the best texture, rumble, and impact out of all of them, and you can actually feel the BC driver more obvious in the notes.
The Origin is basically a fuller and bassier Oracle MK3, and I would skip the MEGA5EST BASS or the other non-basshead sets and save up for the Origin instead… although with EQ I’d prefer the BAJIE more, but more on that in the Origin review 
CONCLUSION
Overall the Bajie is an edgier take on the balanced meta sound with very great bass texture, might be a little too edgy for some, but pretty enjoyable overall, plus the packaging and unboxing is amazing along with the extra sancai and azla tips that you get. Here is the final ranking:
TANGZU BAJIE (MID-VOLUME):
Tonality: S- (8/10)
Tech: A+/S- (7.5-8/10)
Overall: High A+ (7.5/10)
Thanks for reading 
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Jay, would you please give a brief comparison of the bass quality and quantity with Tea Pro vs Oracle Mk3. Thanks!