Quick Intro :
While being mostly known for their top class headphones, The Sivga Que-UTG is a single DD IEM, with the driver itself consisting of a Flat Glass Diaphragm. This immediately caught my attention as to how “glass” as a characteristic will perform. Costing at a mere 89USD, it is poised to be a budget IEM but the inclusion of their high quality accessories might change that thought and the unit itself surely isn’t cheap in looks or build.
Built here is solid with a zinc alloy shell that has some heft onto it with sandalwood faceplates that actually matches the grey colour shell very well. It has a rather small size shell with an oval shape and they are comfortable suiting for smaller ears as well.
Inside of the Que UTG is a specially made dynamic driver with an ultra thin glass diaphragm made by NEG from Japan with a polyurethane suspension that Sivga claims give the bass more elasticity and a more balanced sound.
Included with the Que UTG is a 4 core silver plated oxygen free copper cable that is modular as they are able to swap between the included 3.5mm and 4.4mm head. There is also a real leather hard case that has their branding on them and they looked classy.
Technical Information:
- Driver type: 10mm Ultra Thin Glass Diaphragm
- Shell: Zinc Alloy With Green Sandalwood Faceplates
- Impedance: 32Ω.
- Frequency Response: 20Hz~20kHz.
- Sensitivity: 103±3dB.
- Termination Plugs: 4.4mm+3.5mm.
- Connector Type: 0.78mm 2-Pin Connectors.
Included accessories:
- 6 pairs eartips in S, M and L size
- Que UTG earphone
- Real Leather Case
User Manual :
Source :
TIDAL > ifi Go Bar Kensei > IEM
TIDAL > Questyle M15 > IEM
Offline Files (Playback on HibyMusic) on Hiby R6 iii 2025 > IEM
Songs/albums used to test but not limited to :
Quadeca – Vanisher, Horizon Scraper
Mac Miller’s Discography
Kendrick Lamar – GNX
Taku Inoue – Sanji juunihun
Hoshimachi Suisei – Still Still Stellar
Clipse – Let God Sort Em Out
Tyler, The Creator Discography
YOASOBI Discography
Khary – uhhh
Khary – Intern Aquarium
Jay Chou Discography
Sound Quality
Upon first listen, the Sivga Que UTG gives a dry-ish characteristic, which for some reason really reminds me of the old Cirrus Logic chips ( yes quite a weird tangent ). Balanced to U-shaped tuning with a neutral tonality that scales well with the source. It has great overall clarity, clear as glass (pun intended) and they are able to give a detailed overall presentation that is revealing. This characteristic actually made the Que UTG a revealing type of sound that will showcase even minor flaws on bad records, thus making them a good candidate for those who listen critically. They aren’t a pair that excels on musicalities but isn’t too boring of a sound with their extended treble.
Bass
Fast, nimble and quite flat without any major mid-bass lift. Clean, clear with a tight slam but it lacks quantity that may not suit bass driven genres like EDM, Jazz or modern pop. Rather fast subbass rolls off with some “artificial” characteristics but it does have the rumble when called upon. They do have a “glassy” sound as the diaphragm implies and they have quick transients and controlled lower, mid-bass. Kick drums overall still have a good amount of thumpiness and no signs of bloating or congestion. Bass licks sound brighter with the overtones and blends well with the overall sound.
Vocals
Positioning is quite forward with a transparent sound leaning towards a studio tonality. The vocals do stand in between lush and analog sounding. It has that J pop issue where it sounds ACG that is sharp with occasional sibilance. Female vocals overall presented more thin and dry but possesses superb clarity. Male vocals tend to lack body and thickness but have accuracy and cleanliness.
Mids
Overall sounding transparent and clean, with a shimmer throughout that gives a good amount of brilliance for a livelier sound. Instruments in this spectrum are clear and intentional, specifically for strings and woodwinds are more recessed but presented with good amounts of airiness. Keys sound luscious and smoothened out. Bass strings lack depth and body but in a small margin.
Upper-mids and Treble
Previouly reviewed the Kiwi Ears Aether and when compared, the bite on this is tad bit less but with better resolvement. The crisp and bright ends of certain percussions, high notes of guitars sound more structured. The dry-ish nature of the IEM gives good advantage of guitar shredding solos where every note is heard and interpreted by the listener, giving no room for reverb coloration by extension of notes jumbling. Percussions have a natural and acoustic-ish timbre.
Technicalities
Dynamics are great for the price and they are good but not extremely phenomenal in certain ways as the market is tightly contested. One thing to take note is that the dry-ish nature can cause this pair to sound pseudo-clinical so it “sounds more detailed” but it might just be due to the tonal effect. It can be slightly remedied by a warm source but only marginally.
Soundstage
Quite wide for what it is priced for with adequate reach and depth. Holographic and accurate but lacks immersion. Suitable for gaming and movies as well.
Imaging and separation
Blessing from the dry presentation, Imaging and separation sounds more accurate with a definite border.
Final Thoughts :
With the realization that this thing is a Single DD with an Ultra Thin Glass diaphragm, I would say it is performing quite well and will definitely catch an eye for people who wish to have a slightly different taste than the conventional crisp that a planar can bring. The dry sound does lack musicalities but what it does great is their overall details and clarity. The inclusion of high quality accessories does make this pair a better value proposition and the build is good with an original, well executed design but the market is tough nowadays with loads of competition coming from all sides.
Solid 3 and half out of 5 stars rating
Pros
- Scales up well with warm source
- Forward positioning of vocals
- Clear and intentional midrange
- Detailed, resolving and clear presence
- Transparency
- Soundstage width
- Great accessories included
- Fit is great
- Solid build with unique sandalwood faceplates
- Value
Cons
- Slightly heavy shells
- Occasional sharpness/sibilance with J-pop
- Isn’t for bassheads
- Detail retrieval is average