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.
Product Strengths
- Well-balanced, clear, and detailed sound suitable for a wide range of music genres
- Exceptional micro and macro-dynamic performance
- Bass response has a quick, impactful 'slam' and is technically impressive
- Comfortable for long listening sessions due to quality materials and design
- Substantial build quality, using high-quality materials like aluminum and Alcantara
Product Considerations
- Treble can be a bit blunted and dark in the stock tuning, potentially requiring EQ adjustment for some listeners
- Click-stops on the headband adjustment could be firmer for a high-end product
- Headband fit may not be ideal for all head sizes
- Recessed HD800 connector may limit aftermarket cable options
Comparisons (according to reviewers)
- Vs HIFIMAN Susvara: Solitaire P has more bass and a wider soundstage, but the Susvara is slightly more detailed and comfortable
- Vs Abyss 1266TC: Solitaire P's bass is similar, though not exactly the same, with detail levels close, though trailing slightly behind—Solitaire P is more comfortable
- Vs Meze ELITE: Solitaire P is more detailed and technically accomplished, though the Meze has more treble presence and is more comfortable
Takeaway: The T+A Solitaire P offers high-end sound quality, comfortable wear for extended listening, and exceptional detail and dynamics. With its balanced sound signature and impressive build, it's a top-tier choice for serious audiophiles.
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Manufacturer details
- Transducer principle: Planar-magnetostatic
- Impedance: 80 Ohms
- Frequency responce: 5 Hz - 54 kHz
- Distortion: < 0,015 % @ 100 dB
- Maximum sound pressure level: > 130 dB
- Transducer size: elliptic 110 x 80 mm
- Type of construction: Open, over ear
- Connectivity: Wired transmission (3m)
- Material: Aluminum, steel, allergen-free synthetic leather, Alcantara
- Weight: 530 g excl. cable
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:
- T+A leverages a high-voltage (HV) power supply to achieve a tube-like response from solid-state components, increasing the voltage rail to 100 volts compared to the typical +/-16 to 24 volts.
- They employ a proprietary "True 1-bit" DSD converter, processing DSD data in its native bitstream form, rather than converting it to PCM, in select DACs and players.
- T+A incorporates in-house designed switching power supplies over off-the-shelf components, maximizing current delivery and improving sonic payoff.
Select products
CALA Series:
- Positioning: Designed for music enthusiasts who value compactness and simplicity without compromising on sound quality.
- Description: Offers a sleek design with a purist front panel. Features a DSP-controlled sound management system, which is not found in the more traditional E-Series, providing enhanced sound customization options.
Caruso Series:
- Positioning: A compact all-in-one music system that combines modern functionality with high-quality sound.
- Description: Stands out with its integrated 7-inch HD touchscreen and NavigatorOS, offering intuitive control and a modern user interface, unlike the more traditional controls of the E-Series. It handles streaming, CD playback, and radio in a single device.
E-Series:
- Positioning: A classic stereo system that integrates modern digital capabilities with traditional high-fidelity sound.
- Description: Combines the sound quality of an audiophile amplifier with digital streaming capabilities, offering a balance between traditional and modern audio needs. Unlike the more compact Caruso, provides higher power output and more connectivity options.
R-Series:
- Positioning: T+A's oldest and most important product group, known for its high-end performance and classic design.
- Description: Uses high-voltage technology for superior linearity and transient response, setting it apart from the more compact Series 200. Designed for users who prioritize high power output and detailed sound reproduction.
HV-Series:
- Positioning: T+A's flagship line, representing the pinnacle of high-end audio technology and performance.
- Description: Uses high-voltage technology to achieve exceptional sound quality, with separate high-performance converters for PCM and DSD. Offers the highest level of performance and build quality compared to other series.
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Our Summary
Product Strengths
- Outstanding sound quality with clarity, texture, and detail
- Natural sound provides a you-are-there presence
- Improved microdynamics make them quick and fast
- Easier to drive than the original Susvara due to a changed metal trace on the diaphragm
- Very comfortable, with good weight distribution
- Driver is exposed, making it vulnerable to damage
Product Considerations
- Can be unforgiving on poor recordings
- Lacks soundstage depth and layering compared to some competitors
Comparisons (according to reviewers)
- Vs Mesa Elite: The Mesa Elite offers greater bass weight and depth in the soundstage
- Vs Audeze LCD-5: The LCD-5 provides more insight into the music, but the Susvara Unveiled excels in reproducing the attack and energy of plucked strings and in bass reproduction
- Vs Focal Utopia 2022: The Utopia balances everything well—tonality, punch, detail, staging—however both have a little edginess from the treble
- Vs HiFiMan HE1000 Unveiled: The HE1000 is brighter and seems a little faster and more detailed, but the Susvara Unveiled is smoother
- Vs Original Susvara: The Unveiled model is more agile and lively, with added energy, clarity, and upper-treble extension, and the original is more laid back
Takeaway: The Susvara Unveiled provides detail and resolution that one has likely never heard before, making them astonishing headphones. If the priority is a reference-style tuning for orchestral music with excellent balance, scale, and tonal response, these headphones can provide a massive sonic treat.
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Product Strengths
- Astoundingly resolving, pulling out a lot of detail from the music signal
- Very light unit made with nice materials and a comfortable design
- Detachable cables with thick pins, spaced far apart to prevent damage and shocks
- The best electrostatic that Stax has made, a culmination of their experience
- Purity, tonal neutrality, rhythmic ease and resolve that reviewers have not previously experienced with headphones
Product Considerations
- Head size adjustment could be more solid, and it slides on the head a bit
- Bright tonality and forward resolution can be fatiguing after long listens
- Lacks bass punch or slam, it's there but not powerful in rumble or physicality
- The bass region on these headphones is a hit and miss
- Underwhelming soundstage
Comparisons (according to reviewers)
- Vs HIFIMAN Shangri-La Jr: The Shangri-La Jr is a little warmer but not as detailed, nor as holographic in its spatial presentation
- Vs Susvara: Susvara has more warmth and fullness, a more natural timbre, and more sub-bass rumble and slam, whereas the SR-X9000 can come across as a little bit dry at times
- Vs SR-009S: SR-X9000 smoother, richer, and had better micro-details, while the 009S seemed a tad more dynamic and brighter
- Vs Meze Elite: SR-X9000 is the clear winner on soundstage size, speed, transient response, instrument texture and realism, however, the Elite was the winner when it comes to density, body, dynamics, and bass
Takeaway: The SR-X9000 is the most complete and competent Stax headphone, its resolution is stunning, and its spatial presentation is very holographic. It is worthy of being in that top-of-the-line tier, a solid effort from Stax.
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Our Summary
Product Strengths
- Offers a combination of electrostatic resolution with dynamic timbre and planar bass extension, delivering the 'best of all worlds'
- The build quality is superb, with premium materials and craftsmanship that surpass competitors
- Delivers perfectly extended bass with a planar-like slam, with detail, texture, and physicality
- Has a wide soundstage with excellent imaging that creates a holographic feeling of voices and instruments, with a true 360-degree experience
- Very comfortable to wear, despite being somewhat heavy, with good weight distribution and no hot spots
Product Considerations
- Requires a powerful headphone amp to get the most out of it, due to the need for a current drive interface/transformer
- The weight (610g) may be a concern for some users, though the weight is distributed well
- Some vocalists, particularly some female vocalists, may sound more distant than desired
- Bad mastered songs tend to immediately show problems
- Frequency response is dependent on synergy with the amplifier
Comparisons (according to reviewers)
- Vs HIFIMAN Susvara, it combines the weight of the original Susvara with the soundstage and resolution improvements of the Susvara Unveiled—more power is needed
- Vs Abyss 1266, it has more body of sound, smoother highs, and tighter, more natural bass, while the Abyss has a wider soundstage, better positioning, and more bass impact
- Vs Dan Clark Audio Stealth, it has a wider soundstage and feels more effortless, and is more open, while the Stealth is closed, has more bass quantity, and a more pleasing treble
- Vs RAAL-requisite CA-1A, it improves upon the CA-1A in terms of body of sound, bass, and timbre, while remaining comfortable, and the CA-1A has a lighter and more forward soundstage
Takeaway: The Immanis is an exceptional headphone that blends various sonic qualities together, boasting great build quality and an immersive sound experience. With the right equipment to support it, one can enjoy a detailed and spacious sound that makes it a top contender in the flagship headphone market.
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