When it comes to big, bold karaoke sound, few brands deliver like KBEATBOX. Both the KB-39NEO and CB-41NEO are 15” powered “Big Box” karaoke systems built to entertain, but which one is right for you? Let’s take a closer look at how these two models compare.
🔊 Size and Build: Bigger Frame, Bigger Sound
Both models are built from solid timber with a rugged metal grill and four easy-roll wheels for portability.
The CB-41NEO comes in a larger, heavier frame (33 kg) measuring 45 cm (W) × 46 cm (D) × 79 cm (H), while the KB-39NEO is more compact at 22 kg and 42 cm (W) × 38 cm (D) × 67 cm (H).
That extra cabinet size gives the CB-41NEO’s 15” woofer more room to breathe — resulting in a deeper, fuller bass response, even at lower volumes.
⚡ Power and Sound Configuration
Here’s where things really separate the two:
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KB-39NEO: 70 Watts RMS (400 W PMPO)
→ 2-way speaker setup with a 15” Woofer + 3” Horn Tweeter. -
CB-41NEO: 200 Watts RMS (800 W PMPO)
→ 3-way configuration featuring a 15” Woofer + dual 6.5” mid/high drivers.
In short: the CB-41NEO delivers more headroom, clarity, and punch, while the KB-39NEO still produces impressive sound for its size — and many users are amazed by how powerful it is.
🎤 Wireless Microphones and Connectivity
Both systems include two UHF wireless microphones:
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KB-39NEO: KA-10 (Grey Aluminium Body)
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CB-41NEO: KA-02 (Gold Aluminium Body – premium edition)
Both run on identical UHF frequencies:
MIC 1 (CH-A): 676 – 684 MHz | MIC 2 (CH-B): 685 – 693 MHz
Both feature Anti-Feedback Frequency Technology, bass boost, and TWS (True Wireless Stereo) — so you can pair two identical units for stereo sound and double the output power (140 W RMS or 400 W RMS total).
🎶 Note: In TWS mode, one microphone pair controls both speakers, but the second pair cannot be used simultaneously.
👨🎤 4 Singers? Only the CB-41NEO Can Do It
If you want up to four wireless singers, on a big box unit only the CB-41NEO or its bigger brother the CB-51NEO can be paired with the Sonken Ezy Mic 4.2 System, thanks to its non-competing UHF frequency band.
This makes it perfect for karaoke parties or group singing.
🎚 Controls and Features
Both models include:
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Music / Microphone / Bass / Treble / Echo (Delay & Reverb) controls
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Bluetooth streaming
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Smart TV Optical Input
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Line In, Guitar In, and USB MP3 Playback
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5-hour rechargeable battery (you can play while charging)
However, the CB-41NEO adds:
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Individual mic level controls (not shared like the KB-39NEO)
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Line Out port for expansion to external audio systems
The KB-39NEO uniquely offers access to the DSP Music Enhancer (ACNOS Mixer App) for extra sound-tuning flexibility along with OTG (USB to PC) using the KB-39NEO as a soundcard to record or livestream on social media.
📱 Smart Compatibility
Both models are perfect companions for your Smart TV, phone, tablet, or laptop.
You can stream from YouTube Karaoke, Apple Music Sing, Spotify, or your favourite karaoke app.
They’re also compatible with the ACNOS Karaoke App (Vietnamese song library) — free for iPhone, iPad, and Android users.
Quality and Warranty
Both models are proudly Made in Vietnam by Soncamedia, built to Australian standards, and include a 12-month Australian warranty for peace of mind.
💡 The Verdict
When you see them side by side, the KB-39NEO looks like the little brother — but don’t underestimate it. Customers are consistently amazed by how loud and clean it sounds for the price, making it a top-value performer.
It’s also featured in our “DJ Buster” Bundle, paired with the Sonken MP4000 karaoke player and 1836 professional karaoke songs, delivering unbeatable value.
For those wanting more volume, more depth, and premium microphones, the CB-41NEO is the step up. Its 3-way speaker design, individual mic control, and 200 W RMS power make it ideal for audiophiles, performers, or larger spaces.
🔥 Thinking About Going Bigger? Meet the CB-51NEO.
For many customers eyeing the CB-41NEO, there’s always that lingering thought — “What if I just go one step further and get the biggest one?”
That’s where the KBEATBOX CB-51NEO comes in. It takes everything great about the CB-41NEO and turns it up another notch — in size, power, and overall performance.
The CB-51NEO delivers a commanding 250 Watts RMS (1000 W PMPO) of output power and houses a massive 18” woofer inside a larger, more robust cabinet (40 kg – 52 cm W × 52 cm D × 83 cm H). This additional space allows the woofer to move more air, producing deep, full-bodied bass that fills even large indoor or outdoor areas effortlessly.
Like the CB-41NEO, it uses a 3-way speaker configuration for a rich and detailed sound spectrum — but that 18” woofer takes things to another level entirely, giving you the kind of thumping, cinematic bass that you can feel as much as hear.
And if one CB-51NEO sounds incredible, imagine two.
Using its True Wireless Stereo (TWS) feature, you can pair two CB-51NEO units together for true left-and-right stereo sound with a combined 500 Watts RMS output power — perfect for big parties, function halls, or outdoor performances.
Plus, just like the CB-41NEO, the CB-51NEO supports the Sonken Ezy Mic 4.2 Wireless System, allowing up to four wireless singers to perform simultaneously without frequency interference — ideal for group performances or karaoke nights that get everyone involved.
Of course, this level of performance comes with extra size and cost, but for customers who love to perform loud, host big gatherings, or simply want the ultimate flagship model, the CB-51NEO is in a class of its own.
If the CB-41NEO shakes the room, the CB-51NEO will move the walls.
🎉 Optional Touchscreen Upgrade
Take your karaoke setup even further with our 15.6” Android Touchscreen Package — install all your favourite karaoke apps, stream music and movies, or play games directly on-screen. It can even output to a TV via HDMI for a complete entertainment experience.
🏁 Final Thoughts
No matter which model you choose, both the KB-39NEO and CB-41NEO deliver exceptional sound, build quality, and features that outshine many competitors.
The KB-39NEO offers unbeatable value, while the CB-41NEO gives a richer, fuller sound for those who demand more — and for the biggest performance of all, the CB-51NEO takes centre stage.
Whichever you choose, every KBEATBOX Big Box model is built to bring your karaoke nights to life.
Explore them today at www.khe.com.au
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KB-39NEO: www.khe.com.au/kb39neo
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CB-41NEO: www.khe.com.au/cb41neo
- CB-51NEO: www.khe.com.au/cb51neo