Compare Sendy Audio Apollo Pro vs SIVGA SV021 Robin

Sound leakage is substantial, and people nearby may hear much of the music. Shared offices, commuting, and late-night use beside another person are poor fits.

Leakage is generally low enough for home use, though some reviewers hear more escape than expected from a closed-back design. Seal and cup venting appear to influence the result.

The Apollo Pro earns strong recommendations for home listeners who prioritize comfort, spaciousness, and a warm but detailed sound. It is less suitable for commuters, bass-heads, or treble-sensitive buyers.

Recommendations are enthusiastic for comfort-first listeners who enjoy energetic tuning, gaming and attractive materials. Neutrality seekers, treble-sensitive listeners and buyers prioritizing proven durability are often told to look elsewhere.

Open-back leakage and almost no isolation make the Apollo Pro a poor travel companion. It is better suited to a desk, listening chair, or quiet home room.

The long cable, cable noise, soft pouch and limited isolation make the Robin better suited to home use than commuting. Careful walking or office use is possible with a replacement cable.

Clamp is secure enough to keep the cups stable without pressing hard around the jaw. It should suit long listening sessions better than many heavier planars.

The light clamp helps comfort, yet fit is highly head-dependent. Some get a secure, pressure-free seal, while smaller heads can experience looseness and larger heads may feel concentrated pressure.

The broad, softly padded headband spreads weight effectively and avoids a concentrated crown hotspot. It supports the headphone’s excellent long-session comfort.

Headband padding is adequate for many because the headphone is light, but it is much less plush than the earpads. Larger heads are more likely to notice pressure from the thin band.

The detachable cable can be replaced if it fails, which supports longer ownership. However, the single-ring right-side connector limits compatible aftermarket choices.

Detachable leads make cable replacement and swapping straightforward, a valuable benefit given the stock cable complaints. The dual 2.5mm arrangement is less common than standard single-entry designs.

Passive isolation is minimal, as expected from an open-back headphone. Outside sounds remain audible, so it works best in a quiet private room.

Passive isolation ranges from decent to surprisingly weak depending on seal and fit. It can reduce fans and household noise, but it is not a dependable substitute for ANC in loud environments.

The leather case is sturdy, protective, and notably nicer than typical included cases. It makes storage safer even though the headphone itself is not ideal for travel.

The included pouch is pleasant for storage and scratch protection, but most reviewers do not consider it a true protective travel case.

The suspension headband offers a broad, easy adjustment range that helps the cups settle quickly. Finding a comfortable fit requires little effort.

The adjustment hardware usually feels secure, but the sizing range divides owners. Smaller heads often cannot shorten the headband enough, while some larger heads dislike how the basic band distributes weight.

Voices and instruments sound full, natural, and easy to follow. The slightly warm presentation adds body without making the midrange thin, brittle, or overly forward.

The midrange is the most common tuning compromise. Some hear clear, detailed vocals, but many describe lower mids as recessed, distant or masked by bass.

Treble is detailed and airy without becoming consistently harsh, making long sessions easier. Some listeners may still find the upper range a little spicy on bright recordings.

Treble supplies sparkle, air and impressive detail, but it is the most polarizing part of the sound. Sibilance, sharp peaks and fatigue appear repeatedly, especially on bright recordings or at higher volume.

This is a desk-focused headphone rather than a portable one. The large open cups, substantial cable, and limited privacy make travel inconvenient despite the included case.

The cups do not fold and have limited rotation, so the Robin is mainly a home or desk headphone. A few users still find it portable enough for careful carrying.

The yokes and cups articulate smoothly in multiple directions. That movement helps the pads conform to different head shapes without constant repositioning.

The cups tilt but do not offer full swivel or folding. Soft pads compensate for many users, though the limited movement contributes to fit problems for some head shapes.

The stock braided cable feels premium, durable, and low in handling noise. Its weight and unusual connector arrangement are the main practical drawbacks.

The braided stock cable looks and feels upscale to many reviewers, but cable noise and premature failures recur often in customer feedback. Replacement cables are commonly recommended.

The pads can be removed and replaced without much difficulty. Replacement availability should be checked before purchase, but the design is more serviceable than permanently fixed pads.

Earpad replacement is described as simple on the reviewed sample, using a clean bayonet-style release. Replaceability helps offset concerns about pad wear.

Despite its large planar cups, the frame looks relatively low-profile and cohesive. The design is distinctive without relying on oversized branding.

The understated wood-and-metal styling appeals to gamers who want something classier than flashy, LED-heavy headsets.

Dense arrangements remain organized, with individual instruments easy to distinguish without sounding artificially disconnected. Fast passages and layered mixes are handled especially well.

Imaging and separation are often impressive for the price, helping both gaming cues and layered music. Complex or bass-heavy passages can become less organized and blur individual parts.

Comfort is a standout strength, with several listeners able to wear it through multiple albums or all day. The fit stays secure without creating obvious pressure points.

Plush pads, low weight and gentle pressure make long sessions a major strength for most owners. A minority report crown pressure, poor fit or heat that eventually reduces comfort.

The Apollo Pro can play from modest sources, but stronger amplification brings firmer dynamics and fuller performance. One listener found it easy to drive, while another preferred a more powerful balanced setup.

The Robin is generally easy to drive from laptops, phones, dongles and console controllers. Better amplification can add some separation or low-end control, but most reviewers found expensive power unnecessary.

The response is controlled and broadly balanced, with no exaggerated bass shelf or sharp showroom-style treble boost. Its warmer lower midrange keeps it from being strictly neutral.

The Robin’s lively V-shaped tuning favors bass and treble over strict neutrality. Fans call it fun and versatile; critics find the response uneven, colored and unsuitable for monitoring.

The overall sound is consistently described as natural, detailed, and enjoyable, with warmth that avoids muddiness. It stays musical rather than clinical, even when presenting plenty of information.

The Robin delivers an energetic, warm and engaging sound that many listeners find unusually enjoyable for the price. Its appeal is taste-dependent because bass weight and bright treble can overpower refinement.

The deep velvet pads are soft, breathable, and unusually comfortable. Their cushioning spreads pressure well and reduces heat compared with many synthetic-leather pads.

The thick memory-foam pads are exceptionally soft and deep, often preventing ear contact with the driver. Heat, compression and covering separation are the main pad-related complaints.

Although the cups look large, the 354-gram frame feels lighter than expected. Good distribution keeps the headphone from dragging downward or creating a narrow hotspot.

Its roughly 275-gram weight is widely praised for reducing fatigue and helping the plush pads feel almost weightless. The lightweight feel occasionally reads as cheap to a few buyers.

Glasses did not meaningfully break the seal or reduce bass response in testing. The soft pads adapt well around frames while staying comfortable.

The soft pads generally maintain comfort and a usable seal with glasses. Fit still depends on head size and frame shape.

A detachable cable and replaceable pads improve serviceability and reduce the need to discard the whole headphone after wear. Buyers should still confirm long-term replacement-part availability.

Replaceable pads improve serviceability, but some owners describe failed glued components or nonstandard interfaces as difficult to repair. Repair prospects therefore depend heavily on the part that fails.

The package is generous, with a leather case, accessory pouch, balanced cable, and multiple adapters. The selection feels complete, although the adapter arrangement is not especially elegant.

The cable, 6.35mm adapter and soft pouch cover basic home-listening needs. The package is functional rather than lavish, and the lack of a hard case is the common omission.

The zebrawood, aluminum frame, leather details, and careful finishing create a convincingly premium impression. It looks and feels appropriate for its price class.

Wood cups, metal parts and soft upholstery give the Robin a distinctly premium feel for its price. That impression can fade when cable, pad or finish issues appear.

Build quality is repeatedly praised for solid metalwork, clean fitting, and reassuring adjustment hardware. Nothing feels loose or unfinished, and the construction competes well above its price.

Real wood, metal hardware and tidy finishing make the Robin feel unusually substantial for the price. A smaller group reported rattles, cosmetic flaws or quality-control problems that undercut that premium first impression.

Long-term impressions are strongly positive, with listeners enjoying the Apollo Pro across music, films, and gaming. Warmth, comfort, and spaciousness drive most of that enthusiasm.

Most owners enjoy the Robin’s combination of comfort, styling and lively sound, and many call it a favorite. Dissatisfaction is concentrated around tuning preferences, fit and failures after purchase.

Films and spacious recordings benefit from broad imaging, stable placement, and clear layering. The presentation can feel more speaker-like than many conventional headphones.

Games and music can feel unusually engaging for a budget closed-back, with strong low-end impact and enough spatial depth to create an immersive presentation.

The open-back presentation creates a broad, stable stage with convincing depth and placement. Most listeners praise its spaciousness, though one found it less expansive than the widest open-back alternatives.

Soundstage is frequently praised as wide and airy for a closed-back headphone, with useful depth for games and music. A few reviewers instead find it intimate or cramped.

The Apollo Pro reaches practical listening levels from many dongles and portable sources. A cleaner or more powerful amplifier can still improve dynamics and bass control.

The Robin can reach strong listening levels from modest sources, including controllers and small amplifiers. Weak laptop or phone outputs may sound quieter or thinner.

Wide staging and precise directional placement make footsteps and effects easy to locate. It works especially well for immersive single-player gaming, though voice chat needs a separate microphone.

Gaming is a standout use case thanks to comfort, punch, spaciousness and useful positional detail. It works especially well for long single-player or casual sessions, though a microphone requires an add-on.

The build, comfort, accessories, and sound make the $449 price competitive. It is not a bargain for everyone, but several listeners consider the package excellent for the money.

The wood construction, comfort and lively performance make the Robin feel like strong value around its usual price. Reliability complaints are the main reason some owners no longer consider it a bargain.

The balanced cable and included 3.5mm and 6.35mm adapters cover many portable and desktop sources. The adapter stack can become bulky, but compatibility is broad out of the box.

The detachable dual-entry cable and adapters provide useful wired flexibility, including aftermarket balanced-cable options. The uncommon connector arrangement may make replacements less convenient.

Bass reaches deep with good texture and control, but physical slam is more restrained than bass-heavy dynamic headphones. The tuning favors warmth and definition over subwoofer-like impact.

Bass is usually described as warm, punchy and satisfying, especially for casual listening and games. The main disagreement is control: some hear tight, textured lows, while others hear bloated, muddy bass that masks the mids.

Zebrawood cups, exposed metal, and the sunburst grille give the Apollo Pro a distinctive premium look. The styling earns strong praise, though its decorative appearance will not suit every taste.

The natural wood cups and coordinated metal-and-leather look are among the Robin’s most consistently praised qualities. Reviewers often say it appears far more expensive than its price.

A 3.5mm adapter is included, so standard laptop and portable connections are possible. The long adapted plug is awkward, and a dedicated 3.5mm cable would be cleaner.

One owner reported excellent performance with an LG G8X, though phones without a headphone jack may still need an adapter.

With the optional boom-mic cable, the inline volume and mute controls are simple and work well.

Left and right channels track closely, supporting a stable center image and accurate positioning. No meaningful imbalance was reported.

Several owners describe unanswered warranty messages or unhelpful support after cable, pad or driver failures. This is a repeated concern rather than an isolated complaint.

The optional boom microphone installs quickly and clicks into place, though the attachment can rotate during animated use.

Many reviewers hear strong detail retrieval for a closed-back headphone at this price, especially in treble, games and simpler arrangements. Heavy bass and recessed mids can hide information in dense tracks.

Long-term reliability is the clearest ownership risk. Repeated reports mention failed cables, one-sided audio, peeling pads, loose coverings and breakdowns within months, despite strong initial build impressions.

One owner heard the drivers crinkle whenever head movement changed the pad seal, making an otherwise comfortable fit distracting.

The adjustment hardware feels firm, holds its position, and does not creak. The moving parts give a reassuring impression of careful tolerances.

There is no built-in microphone, so online gaming and calls require a separate mic. That omission matters mainly for users seeking an all-in-one gaming headset.

High-volume listening exposes the Robin’s biggest sonic weakness: treble can become sharp, sibilant or painful, and bass may lose control. Moderate volume is consistently safer.

The optional boom mic is sensitive enough to pick up background noise, so its noise rejection is limited.

The optional boom mic keeps speech intelligible, but the captured voice can sound thin or hollow and may lose lower-register body.

The wired design worked plug-and-play across multiple tested sources, including computers, consoles and controllers.

The optional boom microphone is removable and converts the headphone into a gaming headset without a complicated setup.

The glossy zebrawood finish can show skin oils, small marks, and surface wear. Regular wiping and careful storage will help preserve its appearance.

The light clamp can keep the Robin comfortable, but it also makes stability inconsistent. Smaller heads are most likely to experience slipping or a loose seal.

Closed cups and protein-leather pads trap heat during long sessions, and humid-weather users report substantial sweat. This is a notable drawback for summer, workouts and non-air-conditioned rooms.

Testing on Xbox Series S produced strong gaming detail, dialogue clarity and an easy wired setup.