Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
All
Sonorous IV
reviews

Manufacturer details
- Product code: FI-SO4BD3
- Housing: ABS
- Driver: 50mmΦ dynamic + balanced armature
- Sensitivity: 105dB
- Impedance: 8Ω
- Weight: 410g
- Cord length: 1.5m
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
- Final Audio is known for its expertise in balanced armature driver technology, crafting single full-range drivers that deliver detailed yet non-fatiguing audio, challenging the common multi-driver approach.
- Final Audio designs their products with specific listening purposes in mind, catering to genres like gaming, binaural recordings, or emphasizing certain sonic qualities like presence and clarity.
- The brand's earphones are often praised for their immersive and spacious soundstages, creating a 3D audio experience that extends beyond the physical confines of the housings.
Select products
UX3000
- Positioning: A wireless noise-cancelling headphone designed for premium sound and everyday convenience.
- Description: Features a completely new driver built to withstand the stresses of active noise cancellation while keeping sound clear and balanced. Compared to the wired D series and SONOROUS line, it offers the added benefits of wireless connectivity and portability, making it ideal for small rooms or on‐the-go use with moderate budget demands.
D7000
- Positioning: A premium wired headphone focused on comfort and natural, well-balanced audio.
- Description: Features a driver design using a diffuser technique to enhance treble clarity and maintain a smooth tonal balance. Compared to the D8000pro and SONOROUS models, it is positioned as a cost-effective option with a comfortable fit for users seeking natural sound.
D8000pro
- Positioning: A high-end wired headphone engineered for dynamic performance with enhanced bass impact.
- Description: Uses advanced driver technology with optimized impedance and sensitivity, delivering punchy bass and refined treble details. Compared to the D7000 and SONOROUS units, it offers a more energetic soundstage.
SONOROUS VI
- Positioning: A wired headphone that blends dynamic and balanced-armature techniques to create an expansive sound stage.
- Description: Features a hybrid design combining a 50mm dynamic driver with a balanced armature element and a BAM mechanism to optimize airflow and bass control. Compared to the D series, its integrated driver technology provides a wider, more natural sound field.
SONOROUS X
- Positioning: A prestige, high-end wired headphone that represents the pinnacle of the SONOROUS series.
- Description: Integrates a titanium diaphragm with an integrated machined aluminum front plate and BAM mechanism to deliver crystal clear sound with exceptional realism. Compared to the SONOROUS VI and other D series products, it excels in build quality and sonic detail.
Our take on the brand
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Our summary
Product Strengths
- Excellent wireless sound quality with clarity, detail, and balanced, refined sound.
- Good technical performance, particularly soundstage width.
- Multiple hifi audio codecs are supported, including LDAC, aptX HD, and aptX Lossless.
- The Edifier ConneX app provides a customizable EQ.
- Long battery life is quoted at 80 hours.
Product Considerations
- Active noise cancellation is lacking.
- Some reviewers find the fit awkward, with inadequate clamping force.
- Treble can sound a little metallic or plasticky.
- The use of animal hide might deter some buyers.
- The volume on wireless mode isn't always loud enough.
Comparisons (according to reviewers)
- Compared to the Sony WH-1000XM5 and Sennheiser Momentum 4, the Spirit S5 offers a more audiophile-like presentation with better soundstage and clarity.
- The Spirit S5 destroys the Sony WH-1000XM5 and the Sennheiser Momentum 4s in terms of sound quality.
- The S5 sounds better than the Stax Spirit S3, with improvements across the board and new features.
Takeaway: The Stax Spirit S5 is a great-sounding wireless headphone that is comfortable and offers modern convenience. It is an excellent choice for anyone wanting to enjoy music with detail and clarity.
Video review
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Our summary
Product Strengths
- Uses premium materials like carbon fiber, metal, sheep lambskin earpads, and zebra wood faceplates for a luxurious feel, with excellent build quality
- Has a mostly neutral sound signature, with lambskin pads bass response is very good with a tasteful emphasis placed on the sub-bass region, and a decent midrange
- Provides good detail retrieval, resolution, and transparency of sound, the drivers can show plenty of information and micro detail
- A pad swapping system allows changes to sound characteristics, with lambskin pads and breathable fabric pads included
- Comes with a quarter-inch adapter and a 4-pin XLR adapter for use with portable or desktop devices
Product Considerations
- The stock cable is 3 meters long, which is too long for desktop use
- Headband adjustment can be a little stiff to move
- With leather pads, the highs can get slightly sharp
- There is a slight sharpness in the upper treble that might pose a problem for some listeners, using fabric pads can mitigate this
- Weight distribution could be better, there's not enough padding on the headband, and the clamp force is low, this distributes all the weight across the top of the head, which can be bothersome after 40-50 minutes
Comparisons (according to reviewers)
- Vs HiFiMan Susvara: Has a similar driver structure
- Vs HiFiMan HE1000 Unveiled: Is close in terms of technical performance like resolution, transient response, soundstage, depth, and openness
- Vs HiFiMan Arya Stealth: Has a better build quality and bass response
Takeaway: The FiiO FT7 is a well-built, comfortable headphone that offers a neutral-leaning-warm sound that can be tailored with different earpads. The FT7 competes with other headphones that cost significantly more, making it a great pick at its price point.
Video review
Our take on the brand
Product Strengths
- Excellent stereo separation for mixing and monitoring
- Built with aluminum, it has a durable feel
- Designed for reference listening
- Clean, linear, and very detailed mids
Product Considerations
- Sound can be considered somewhat restrained, lacking upper midrange and low to HF 'hype'
- Cloth ear pads may not feel as soft or luxurious as velour pads on some other headphones
- Lacks impact and bite
- Headband padding is uncomfortable
- Single-entry cable is on the right side, which is an unusual placement
Comparisons (according to reviewers)
- Vs Sennheiser HD650: Differences come down to something similar to a full-range studio monitor versus a full-range hifi speaker of equal build quality and similar design, Sennheisers are geared more towards enjoying the brain-pleasing sounds of music, while you probably want to mix with the Neumanns
- Vs Sennheiser HD600/650: The HD600 and HD650 are more comfortable, with a better industrial design than the NDH-30
Takeaway: The Neumann NDH 30 is a tool that can be very helpful for mixing sessions, especially for identifying details in the mid-range of a mix. Its design and build quality also make it a lasting product.
Video review
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Product Strengths
- The Wraith features an all-metal alloy body that feels sturdy and durable
- The earcups feature a rotating mechanism, making it convenient to rest the headphones around the neck
- The design is considered stylish, industrial, and unique
- The suspension headband design distributes weight evenly, making it comfortable to wear for long listening sessions
Product Considerations
- The Wraith's headband adjustment system is not very practical and requires a screwdriver to adjust
- Stock pads may not create the best seal, impacting sound isolation
- The soundstage is intimate, and the resolution is average
- The 2.5mm connectors on the earcups might limit replacement cable options
- Sub-bass can roll off with stock pads
Comparisons (according to reviewers)
- Vs HiFiMan Edition XS: The Edition XS has better resolution, clarity, and sub-bass response out of the box, but the Wraith has superior build quality, materials, robustness, and comfort
- Vs Sendy Audio Aiva: The Wraith and Aiva share a similar bass roll-off
- Vs Moondrop Venus: The Moondrop Venus costs slightly more and provides a wider soundstage and more refined sound
Takeaway: The ThieAudio Wraith has excellent build quality and a unique design, making them durable and comfortable for many users. The sound is warm and laid-back, making them suitable for casual listening.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- Good comfort and lightweight design
- Good passive isolation
- Long battery life
- Effective ANC
Product Considerations
- Build quality could be better
- Treble may be spiky and excessively emphasised
- Midrange may be recessed and distant
- Bass can be a bit thick
- Treble is rolled off
Comparisons (according to reviewers)
- Vs Bose QC15: Bose did a marginally better job on noise cancellation
Takeaway: The Final UX3000 delivers features consumers crave and an audiophile sound, whether wired or wireless. It sounds great and has good operational specifications.
Video review
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Our Summary
Video review
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Our Summary
Product Strengths
- Shockingly good for the money, a very well-tuned headphone for the price category
- Good bass response that is fun, with lots of thumpiness and impact in the lower sub-bass regions, while maintaining a clean mid-bass region
- Trouble response is fairly target-adherent with a chill character and not overly fatiguing
- Comes with a banger accessories package providing two cables, a carry case, more than a lot of companies are coming out with
- Delivers impressive sound quality across the board, backed by excellent build quality and a generous set of accessories
Product Considerations
- The actual earpad area for the ear is not super great, and it will be felt a little bit on the ear, might be more on-ear than fully over-ear if you have really large ears
- Sound staging is one area that could improve the most, because there is almost none, can sound almost claustrophobic, because everything is happening right here all the time
- Mid-range is not all that exciting to listen to, vocals can be shouty or honk-type sound to certain vocalists
- Build quality feels good for $150, but it would not pass the sniff test for $500, definitely feels like it's a budget device
Comparisons (according to reviewers)
- The AKG K361 has advantages over the FiiO FT1, like sound staging
- The FT1’s level of midrange fidelity is impressive, rivaling the best mid-fi headphones such as the Sennheiser HD6XX and the Sundara
- It outshines most closed-back classics, including the Sony MDR-7506, AKG K361, and beyerdynamic DT700 Pro X
- The smaller FiiO FT1 was enjoyed even more than the FiiO FT5, since it strikes the right balance between fun, warmth, and technicality, handling tough tracks with much more ease than anticipated
Takeaway: The FiiO FT1 is a surprisingly good closed-back headphone for the money and offers a well-tuned sound signature with good bass response. This headphone is priced at $150 and is surprisingly nice with some great terminations.
Video review
Our take on the brand
Our Summary
Product Strengths
- The HD 560S delivers a flat sound profile that should suit most musical genres
- Very comfortable, with a relatively lightweight design and plenty of plush padding
- Soundstage is exemplary
- Lightweight and provide a nimble feel
- Excels in delivering both vocals and instruments with a remarkable level of clarity and precision
Product Considerations
- Some users might find it a bit dull over time due to its conservative sound signature
- Can be a bit intense at times in the lower treble
- The plastic construction does not scream luxury
- Some loss of texture in the mid-bass, with bass notes of different instruments often sounding the same
Comparisons (according to reviewers)
- Vs AKG K702: 560S' sound is going to feel a bit closer, but it may not always be a good thing when trying to hear what is farther off in the distance, for gaming
- Vs Sennheiser HD58X: The 560S is cleaner and more accurate sounding than the HD58X
- Vs Sennheiser HD600: The 560S is more intimate and livelier sounding than the darker HD600
- Vs HIFIMAN Sundara: Compared to the more expensive Hifiman Sundara, the 560S sounds like it lacks detail across the frequency spectrum, except in the sub bass region where the Sundara does not seem to dig as deep
Takeaway: The Sennheiser HD560S is a comfortable headphone with a well-balanced sound, making it a solid choice for both gamers and music enthusiasts looking for neutrality and clarity. It is a versatile headphone for various genres and applications.
Video review
Our take on the brand
Our Summary
Product Strengths
- Beautifully made with real wooden cups, nice metallic flourishes, and a nice adjustment system
- Very easy to drive from any device due to its 32 ohm impedance and 103 dB sensitivity
- The included hard case is of good quality and protective
- Comfortable to wear for extended sessions due to its light weight (296g) and well-designed headband
- Good soundstage width and overall space, with well-defined instrument separation
Product Considerations
- Some reviewers with larger ears may find the earcups to be too small, causing discomfort
- Lack of extra treble detail and energy means that some percussion misses its snap and shimmer
- The headband size is pretty small, so if your head is on the large side, it might not fit
- Stock earpads are too shallow for some users, causing their ears to touch the inside of the cups
- The midrange can sound stuffy and veiled, lacking clarity and detail compared to some competitors
Comparisons (according to reviewers)
- Vs Monolith M1060 V2: The Phoenix has better quality treble, but the M1060 has a better quantity of treble and a more neutral sound
- Vs Sennheiser HD560S: The HD560S is a reference headphone designed to be analytical and neutral, while the Phoenix is colored, engaging, rich, and warm
- Vs Sennheiser HD600: The Phoenix is warmer, has deeper sub-bass extension, and a wider soundstage, but the HD600 is more intimate, clear, and detailed in the mids and vocals
- Vs beyerdynamic DT880: The DT880 has a midbass bump and clearer mids, while the Phoenix has better treble extension
- Vs HarmonicDyne Zeus: The Zeus is a warmer set, but the Phoenix is better implemented
- Vs Austrian Audio Hi-X55: The Phoenix has a more environmental feel when it comes to its sub-bass response and a wider soundstage, but the Hi-X55 has a sweeter vocal presentation
Takeaway: The Phoenix offers a warm, rich, and punchy sound signature in a beautifully designed and comfortable package that is easy to drive. It could be a great option for those who enjoy a bass-emphasized sound and listen to genres where extra bass is beneficial.
Video review
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