Modern TVs are brilliant to look at and ordinary to listen to. There is simply no room in a panel a centimetre thick for decent speakers, which is why dialogue sounds thin, explosions sound like someone slamming a cupboard, and you keep riding the volume button all night. A soundbar fixes this for a fraction of what a full home theatre costs — but only if you buy the right one for your room.
The catch is the spec sheet. Numbers like 2.1, 5.1.2 and 7.1.4 get thrown around next to Dolby Atmos badges, and the marketing rarely explains what any of it means or whether you will actually hear the difference. This guide decodes it all in plain English, then matches real soundbars to real rooms.
How to choose a soundbar
Channel counts, decoded
That string of numbers tells you exactly what is inside the box. The first digit is the number of ear-level speaker channels: 2 means left and right, 3 adds a dedicated centre channel (which noticeably sharpens dialogue), and 5 or more adds surround channels. The second digit is the subwoofer — .1 means there is one, either built into the bar or as a separate box. The third digit, when it appears, counts up-firing height speakers that bounce sound off your ceiling.
So a 2.1 bar is stereo plus a sub. A 3.1 adds a centre channel for clearer speech. A 7.1.2 has seven ear-level channels, a subwoofer and two up-firing drivers. More channels generally means a wider, more enveloping sound — but only if your room lets them work, which brings us to Atmos.
Do you actually need Dolby Atmos?
Dolby Atmos adds a height layer to the sound, so a helicopter passes over your head rather than just left to right. Done properly, it is genuinely impressive. But two conditions need to be met before you will hear it. First, the bar needs real up-firing drivers — that third digit in the channel count. A 2.1 bar with an Atmos badge is decoding the format and simulating height through processing, which is a modest improvement, not the full effect. Second, your ceiling needs to cooperate: a flat ceiling around 2.4 to 3 metres high reflects the sound down to you nicely, while raked ceilings, exposed beams or very high ceilings scatter it.
Also consider what you watch. Netflix, Disney+ and Prime Video all stream Atmos on plenty of titles, and most 4K Blu-rays carry it. If your viewing is mainly free-to-air news and sport, Atmos hardware is money better spent on a good subwoofer and centre channel instead.
Built-in versus wireless subwoofer
Bass is where cheap soundbars fall over. A built-in subwoofer keeps things tidy — one box, one power point — and suits bedrooms and units where you do not want the neighbours involved. A separate wireless subwoofer moves far more air and gives movies real weight; it pairs automatically and only needs power, so you can tuck it beside the couch or in a corner. As a rule, if your room is bigger than about 20 square metres or you care about movie nights, get the separate sub.
Match the bar to your room
A 9.1.4 system in a small bedroom is wasted money and a boomy mess. As a rough guide: for bedrooms, studies and small units, a compact 2.1 bar with a built-in sub is plenty. For a typical Australian lounge room of 20 to 35 square metres, a 3.1 or 5.1 with a wireless sub hits the sweet spot. For large open-plan living areas — where kitchen, dining and lounge share one space — you need the extra channels and power of a 7.1.2 or bigger to fill the volume, and rear speakers if you want true surround rather than a wide front soundstage.
Connections: why eARC matters
Check the back of your TV for a HDMI port labelled ARC or eARC before you buy. HDMI ARC sends TV audio down the same cable that carries picture, so one remote controls volume and there is no cable spaghetti. eARC is the newer, higher-bandwidth version and is the one you want for full-quality Dolby Atmos. Optical connections still work fine for stereo and standard surround — the Sonos Ray below uses optical exclusively — but they cannot carry lossless Atmos. If your TV is from roughly 2019 onwards, it very likely has eARC on at least one port.
The picks: a soundbar for every room
Best budget starter: the Kogan 2.1 Channel 110W Dolby Soundbar with Built-in Subwoofer at $150.48 (down from $213.41) is the simplest possible upgrade — one bar, one cable, Bluetooth 5.3 for music. It suits bedrooms, studies and anyone who just wants the news and footy to sound like they are coming from actual speakers.
Cheapest way into Atmos: the Kogan 2.1 Channel 140W Dolby Atmos Soundbar with Built-in Subwoofer at $224.96 (was $292.45) decodes Atmos in a compact single-bar format. Be realistic — without up-firing drivers this is virtualised height, not the full overhead effect — but it is a clear step up in width and clarity for a small room.
Best known-brand budget pick: the Hisense HS2100 2.1CH Soundbar with Wireless Subwoofer at $245.99 (a $98 saving off $344.38) pairs a slim bar with a separate wireless sub, so movies get proper low-end punch. A natural match if you already own a Hisense TV, and an easy pick for renters who want real bass without a permanent setup.
Best for dialogue: the Kogan 3.1 Channel 230W Dolby Soundbar with Wireless Subwoofer at $224.94 (was $292.43) adds the dedicated centre channel that makes speech cut through music and effects. If you find yourself rewinding because you missed a line, or you watch with subtitles out of self-defence, this is the fix.
Best compact premium bar: the Sonos Ray Soundbar at $515.99 (a hefty $206 off its $722.38 price) is just 557mm wide and sounds far bigger than it looks. Wi-Fi streaming and Apple AirPlay 2 make it a genuine music speaker between movie sessions, and it slots into the Sonos multi-room system. Note it connects by optical cable, not HDMI — fine for its stereo focus, but skip it if Atmos is your goal.
Best value big-room system: the Cinematic 7.1.2 Channel 750W Dolby Atmos Soundbar with Wireless Subwoofer at $451.42 (was $586.85) brings real up-firing drivers and an 8-inch sub for serious output. This is the point where Atmos stops being a badge and starts being an effect, and 750W fills an open-plan living area without strain.
Best full surround package: the Cinematic 9.1.4 Channel Dolby Atmos Soundbar with Wireless Subwoofer and Rear Speakers at $556.30 (saving $216 off $938.58) includes rear speakers, which no soundbar processing can truly replicate. If you want sound coming from behind you — actual surround, not simulated — this is the cheapest honest way to get it, four height channels included.
Best premium pick: the Yamaha TRUE X BAR 50A Soundbar with Wireless Subwoofer at $1,339.10 (a $401 saving off $1,740.84) is for people who care how music sounds as much as movies. Yamaha's decades of hi-fi engineering show in the tuning, and the wireless sub is genuinely musical rather than just loud. Buy it once, keep it for a decade.
Quick comparison
| Soundbar | Best for | Price |
|---|---|---|
| Kogan 2.1 110W (built-in sub) | Bedrooms, first upgrade | $164.16 |
| Kogan 2.1 140W Dolby Atmos | Small rooms, Atmos on a budget | $194.56 |
| Hisense HS2100 2.1 (wireless sub) | Renters, brand-name value | $245.99 |
| Kogan 3.1 230W (wireless sub) | Clear dialogue | $270.54 |
| Sonos Ray | Apartments, music streaming | $515.99 |
| Cinematic 7.1.2 750W | Open-plan rooms, real Atmos | $525.90 |
| Cinematic 9.1.4 with rears | True surround sound | $721.98 |
| Yamaha TRUE X BAR 50A | Premium movies and music | $1,339.10 |
Soundbar FAQ
Is Dolby Atmos worth it in an apartment?
Usually not the big systems. Standard apartment ceilings around 2.4 metres actually reflect height channels well, but shared walls mean you will rarely turn a big sub up far enough to justify it. A compact bar like the Sonos Ray or a 2.1 with built-in sub is the smarter apartment buy.
Do I need a subwoofer if I live in a unit?
A built-in sub gives you enough low end for everyday viewing without rattling the neighbour's wall. If you go for a separate wireless sub, most systems let you trim the bass level independently — turn it down after 9pm and everyone stays friendly.
My TV only has optical out. Am I stuck?
No — optical carries stereo and standard 5.1 perfectly well, and several bars here include an optical input. You will miss out on lossless Atmos and single-remote volume control, so if you are also due for a TV upgrade, make eARC a priority on the new one.
Where should the subwoofer go?
Wireless subs only need a power point, so you have options. Start with it near the front of the room on the same wall as the bar; corners boost bass output but can sound boomy. Avoid hiding it inside cabinets — bass needs room to breathe.
The bottom line
Buy for your room, not the spec sheet. Small room, simple 2.1. Typical lounge, 3.1 with a wireless sub. Big open-plan space and a flat ceiling, that is when real up-firing Atmos earns its keep. Every bar here ships from our Sydney warehouse with a 1-year warranty and 30-day returns — browse the full soundbars collection to compare the whole range.
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Prices correct at publication and may change. Stock levels update daily.