Night Oblivion Butastur and OpenAudio Mercury use 10BA and 1DD+4BA driver setups respectively. Night Oblivion Butastur costs $599 while OpenAudio Mercury costs $600. OpenAudio Mercury is $1 more expensive. Night Oblivion Butastur holds a decisive 2.1-point edge in reviewer scores (7.6 vs 5.4). Night Oblivion Butastur carries a user score of 9.3. Night Oblivion Butastur has significantly better bass with a 1.5-point edge, Night Oblivion Butastur has significantly better mids with a 1.5-point edge, Night Oblivion Butastur has significantly better treble with a 1-point edge, Night Oblivion Butastur has significantly better dynamics with a 1-point edge, Night Oblivion Butastur has significantly better details with a 2.5-point edge and Night Oblivion Butastur has significantly better imaging with a 2-point edge.
Insights
Metric | Night Oblivion Butastur | OpenAudio Mercury |
---|---|---|
Bass | 7.5 | 6 |
Mids | 7.5 | 6 |
Treble | 7 | 6 |
Details | 7.5 | 5 |
Soundstage | 7.5 | 5.4 |
Imaging | 8 | 6 |
Dynamics | 6 | 5 |
Tonality | 7.6 | 6.7 |
Technicalities | 7.5 | 5.2 |
Night Oblivion Butastur Aggregated Review Score
Average Reviewer Scores
OpenAudio Mercury Aggregated Review Score
Average Reviewer Scores
Night Oblivion Butastur Details
Driver Configuration: 10BA
Tuning Type: Warm Neutral with bass boost
Price (Msrp): $599
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OpenAudio Mercury Details
Driver Configuration: 1DD+4BA
Tuning Type: Bassy V
Price (Msrp): $600
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Night Oblivion Butastur User Review Score
Average User Scores
Average User Score:
Based on 1 user reviews
9.3Exceptional
OpenAudio Mercury User Review Score
Average User Scores
Average User Score: n/a
Based on 0 user reviews
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Night Oblivion Butastur Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
7Gaming Grade
A-OpenAudio Mercury Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
5.1Gaming Grade
C+Night Oblivion Butastur Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A- Well-executed tonal character. No major flaws with good technical control. Smooth presentation works with multiple genres.
Average Technical Grade
A- Competent technical presentation. Handles separation and detail well in most tracks, with modest soundstage and acceptable imaging capabilities.
OpenAudio Mercury Scorings
Average Technical & Tuning Grades
Average Tunign Grade
B+- Generally enjoyable tonal character with some noticeable unevenness. Maintains listenability while showing room for refinement in frequency balance.
Average Technical Grade
C+- Satisfactory technical performance. Handles basic detail retrieval adequately in most tracks. Maintains reasonable cohesion in simpler arrangements.
Night Oblivion Butastur Reviews
Reviewed by: Shuwa-T
Reviewed by: Jaytiss
Jaytiss Youtube Channel
Reviewed by: Jays Audio
Jays Audio Youtube Channel
Reviewed by: IEMRanking AI

The NIGHT OBLIVION BUTASTUR delivers a natural timbre and cohesive sound, with its standout feature being a lush, dense midrange that excels in vocal and acoustic instrument reproduction. Vocals sound present and textured without shoutiness, while the bass offers weighty density over sharp slam, leaning slightly warm and creamy in texture. Treble remains smooth and fatigue-free, avoiding harshness even with extended listening, though it lacks sparkle for those seeking heightened brilliance.
Technically, it impresses with holographic imaging and strong layering, creating an intimate yet spatially convincing stage. The included modular cable is exceptionally high quality for the price, and the dual DIP switches allow subtle tuning adjustments—adding bass warmth or treble sharpness—though the changes are nuanced and require a tool to toggle. While isolation is good, the nozzle design risks internal debris accumulation, and the bass lacks definition in sub-bass decay.
OpenAudio Mercury Reviews
Reviewed by: Bad Guy Good Audio
Bad Guy Good Audio original ranking
Bad Guy Good Audio Youtube ChannelReviewed by: Precogvision
Precogvision Youtube Channel
Reviewed by: Super* Review
Night Oblivion Butastur User Reviews
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You need to be signed in to write your own reviewFantastic set for someone who loves organic sound and Mid centric tuning, incredibly underrated especially for an All BA IEM.
Pros
the Timbre and Mids on this are phenomenal, incredibly natural and lovely. the High end doesnt fatigue you after long listening session, and the venting is one of the best I've experienced, zero pressure build up. Pinpointing instrument is a breeze.Cons
Treble lacks sparke, very subjective but quite a plain and boring faceplate (I find aesthethics important), and I wish the low end had a bit more oomph to it.OpenAudio Mercury User Reviews
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Pros
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Cons
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