Small Price, Big Sound

Twistura has been a relatively new brand but they are coming out with great products in recent times like the glass diaphragm Beta, Woodnote and Sigma. Their catalogue of products is growing and growing and they have recently released an ultra budget IEM, the Delta. Priced at a friendly USD39, it is a single LCP dynamic driver IEM encased in a zinc alloy shell and they have the design pedigree of Twistura as they are a sleek looking IEM indeed. We have been spoiled lately with loads of decent ultra budget releases and the segment is getting packed, so how will Delta stand here? We shall find out soon.

We’d like to thank Twistura for providing a sample of the Delta for us to review. As always, we are not affiliated with Twistura, have received no monetary compensation, and our assessment will reflect our honest, opinionated perspective.

Functions & Specifications

Before we start the review, here are the specifications of the Twistura Delta;

• Cavity material: Electroplated zinc alloy
• Driver: 10mm LCP dual-magnet dual-chamber dynamic driver
• Sensitivity: 120 dB/Vrms (@1kHz)
• Impedance: 42Ω±15% (@1kHz)
• Frequency Response Range: 8Hz-21kHz(IEC61094,Free Field)
• Plug: 3.5mm / Type-C
• Cable: Oxygen-Free Copper (OFC) cable with mic

The Twistura Delta can be purchased through their website and any other platforms worldwide

Delta All-Scenario Single Dynamic Driver Detachable Cable Earphone

https://a.aliexpress.com/_c4UDQFfD

Packaging & Accessories

Nothing much is expected at this price range but Twistura has been rather generous here with their packaging and accessories. The box is a straight forward professional theme with a small sized box with a beautiful design.

Accessories are at an acceptable quality and at this price range, they are actually pretty good.

Design

The design here is ergonomically sound with an original design that comes in a glossy black shell made from electroplated zinc alloy that is famed for their hardness and scratch resistance. The design here is rather simple but they look and feel really premium on hand with some heft to them on hands. Fit here is superb as the weight here is still rather light and their ergonomics are great.

Driving the Delta is a 10mm liquid crystal polymer diaphragm dynamic driver with dual cavity and dual magnetic circuit. These drivers give great internal damping and with quick transient response, effectively minimizing unwanted vibrations. The cavity is optimized to maximize the dynamic driver performance.

The nozzle here has a width of 6mm at the tip and they are fitted with a steel mesh protecting them against dust and moisture. The length here is great and they do fit any 3rd party eartips well.

There are a total of 3 vents present here on the Delta where a rectangular back vent that is rather large for the dynamic driver on the faceplate and 2 pinhole vent situated on the inner side of the IEM for pressure relief. The Delta is a very well vented pair of IEM that doesn’t possess any flex and they have a decent isolation without any pressure build up issues.

The 0.78mm connectors are the standard flush 2 pin 0.78mm.

The cable included is a basic silver plated copper cable with a high quality microphone fitted. Users have the choice of 3.5mm and USB C DSP cable. The 2 pin sides are an angled type of connectors that fit the shape of the ears well for a more comfy fit.

Gears Used for Comparisons

Songs list

Tone and Presentation

The tone of the Delta is a warm, L shaped sound for their boosted lows and smooth, inoffensive highs with thick intimate mids that excels in musicalities rather than clinicalities. Tonal balance here does lean towards a darker tone but still possesses adequate overall clarity. The overall details here are actually great with a clean and clear sound with decent technicalities. The sound presentation is smooth, inoffensive with a packed energy on the low end that has superb immersion, suiting a wide range of usage that includes movies and gaming. Dynamic range is decent with a good extension on lows and high with good airiness present. The tuning here is more towards a fun, energetic and thick sound which suits casual listeners more than critical ones.

Soundstage

The soundstage here is wide with a good height alongside good headroom size that is free of any boxiness effect issues but the soundstage here is rather average as they lean towards an intimate soundstage. They do have a near field sound that projects the sound straight into your ears and they sound intimate and immersive. In terms of accuracy, the Delta has a holographic soundstage that has accurate spatial positioning making them a suitable pair for gaming and movies.

Separation and Timbre

Separation is great with a decent stereo separation that has great width and has low crosstalk issues and scales up well with a balanced setup. As typical of a single dynamic driver, there isn’t any cohesion problem and the sound produced is full and gapless. Timbre here is organic, warm, rich and smooth with a natural sound reproduction and they are a highly musical sound experience that has a velvety smooth sound that is fatigue free.

Drivability

Rated at 42 ohms with a 120 db sensitivity, they are easily driven by any source giving an ample loudness even on their own USB C DSP cable. Scalability here is actually pretty good as with better sources and bigger driving power, improvements like better extension with cleaner low end are audible alongside better overall clarity. The Delta are a little high on their sensitivity but it does not pick up and hiss easily and they are slightly revealing but these aren’t their strength. They are not a picky type of IEM but a well mastered track and also high bitrates track will give a cleaner, clearer overall sound only in a small margin.

The Bass (Low)

The bass here is the dominant overall sound with a boost in the mid-bass, possessing a meaty, dynamic bass that has the authority and even though the amount here is high, they are still in control without being overpowering but with low quality sources, they tend to have some bloat but there isn’t any bass bleed present which is great. The slam here is punchy, slightly tight with a good pace that has the ability to keep up with busy tracks like EDM with ease. Details and clarity here is decent with clear lows that have decent texture showing layers of bass notes clearly. The bass here is not for purists, instead suit bassheads who want authority in the bass department. The bass has great extension with a slow roll off makes the bass lingers with a good amount of air. The sub-bass amount is also boosted but the focus here is on the mid-bass and the sub-bass has a great rumble with great depth and a clean decay giving an immersive, punchy overall bass.

The Mids

Midrange is warm and thick with a slightly forward sound signature that is lush and intimate. The details and clarity here is rather average but decent for their price and they focus mainly on the macro region with good micro details retrieval. The mids here have a thick amount of body to them that makes them sound rich and full-bodied. There is some colouration present here and they have a vivid sound that has great resolving sound but transparency here is average as there is some colouration present that might affect the naturalness of certain sound. The transition from the lower midrange is great with a mild climb towards the upper mids but they do lack some brilliance and bite. Male vocals sound deep and soulful but on some female vocals, they tend to lack a shiny brilliance. Instruments perform mostly well like drums, bass and percussions but not so much for strings.

The Highs

The high here is slightly rather flat without major peaks and they are a smooth, silky type of high range that is fatigue free. The high range here is mostly inoffensively smooth without any sibilance present which is suited for treble sensitive users. Sparkle here is present with a clean and slightly crisp decay that sounds rather natural with an organic timbre. Details here are great as every high nuance is well displayed while also possessing a good amount of clarity. The pace is average, capable of playing with fast tracks and they have a decent extension with a mild slow roll off that gives the highs some air. Treble has a laid-back, toned down intensity to them that has a good amount of overall clarity added and they are a rather laid-back type of high range that is suited for a long listening session. Though being a tad polite in their high range, they do possess a good presence and this type of relaxed high range suits a wide range of usage and makes the Delta a suitable pair of IEM for everyday usage as they are inoffensively smooth.

Comparisons

VS Sivga SM100

One of the latest releases from Sivga, the SM100 although positioned as a gaming IEM, they have a rather pure sound signature with a neutral presentation with a clean and clear overall sound that punches above their asking price. It has a similar asking price at 40USD but the Delta has a choice of USB C cable and inclusion of a soft fabric bag which make them a slightly better value.

• Bass amount and quality is better on the Delta
• Bass is more textured and full on the Delta but clarity is better on the SM100
• Mids on the Delta is thicker, more intimate and fuller while the SM100 is cleaner, clearer and more accurate
• Mids on the Delta sounds sweeter and lusher for their added colouration
• Transparency on SM100 is better while resolution on Delta is more vivid
• High range amount is better on the SM100 with better brilliance while the Delta is smoother and fatigue free
• Soundstage on both are similar while air is slightly better on Delta

VS Cozoy D1

The Cozoy D1 is a graphene plated dynamic driver that is similarly priced with the Delta and they are a 3D printed medical grade resin shell that is lighter but not as robust as the Delta’s zinc alloy shell. The cable of the D1 does look better but they do lack a pouch.

• Bass amount on both are similarly boosted but the Delta bass is more textured and sounds fuller
• Sub-bass on both are big but the D1 sub-bass sounds cleaner
• Mids on Delta is more forward and they are more intimate while the D1 has better space albeit a little recessed
• Upper mids on the D1 has a bigger peak and possess more brilliance
• High range on D1 has a bigger energy and has a livelier sparkle and crispness while Delta sounds smoother and more forgiving
• Timbre on Delta is more organic
• Soundstage on the Delta is slightly wider but both possess great overall air

Synergy

The bass dominant, smooth sound of the Delta do makes them a good IEM for EDM and modern genres while also suit some classicals and jazz. These aren’t a pair for critical listening but suited for an every day use for their inoffensive overall sound.

Genre selections

Suits: Jazz, EDM, hip-hop, classicals, modern pop, pop, rock, metal etcetera

Not suitable: Acoustics, ACG (subjective)

Recommended source: Neutral bright sources

Examples: FiiO Q7, Questyle M15, Qudelix T71, VE Devastator Pro Max, VE Megatron, FiiO KA5

Not recommended sources: Warm, bass oriented source

Examples: EPZ TP35, FiiO Q15

Who Is It For?

Suitable for – Instrumentals, rock, metal, ACG, EDM, hip-hop, casual listening, gaming, movies, beginner audiophiles

Not really suitable – acoustics, monitoring

Final words

The Twistura Delta doesn’t reinvent the wheel, but at USD39, it delivers a remarkably cohesive, fun-loving L shaped sound that punches well above its price bracket. The premium robust zinc alloy build, generous accessory bundle (including a suede pouch and USB-C option), and possessing a wonderfully organic, fatigue-free tuning make it an easy recommendation for bassheads, gamers, movie watchers, and anyone wanting a musical, immersive daily driver. While critical listeners and treble purists may find the highs a touch polite alongside the slightly colored mids, the Delta excels at what ultra budget IEMs should do, to bring joy to your music without asking for compromise. Twistura has quietly released one of the most enjoyable value propositions of the year.

4 stars ⭐⭐⭐⭐

Pros

• Solid build with a nice design and great fit
• Well tuned L shaped sound
• Rich, organic timbre
• Highly immersive
• Good soundstage width and good air
• Thick, warm, inoffensive sound
• Decent overall details and clarity
• Forward, thick mids
• Meaty, authoritative bass with deep, rumbly sub-bass
• Good resolution
• Smooth, extended high range
• Laid-back, smooth treble
• Value

Cons

• Not for monitoring or clinical listeners
• Mild coloured midrange
• High range lack bite and brilliance
• Bass a little bloat with bassy source
• Lack transparency