Short answer: the JBL Partybox 300 on sound quality. Its highs and midranges are crisp and crystal clear with hard, punchy bass and no muddiness, while the Electrotec Stage One is built around a gigantic dual swappable battery and, per the page, more loudness than deeper bass. The Partybox 300’s cost is ergonomics: it is hard to carry, too tall, and drags on the ground.
What the Electrotec Stage One gets right: Gigantic dual swappable battery. The tradeoff: Designed for more loudness than deeper bass.
On the JBL Partybox 300 side: Exceptional sound quality with crisp, crystal clear highs and midranges, hard punchy bass without muddiness. The catch: Hard to carry, too tall, drags on the ground.
Worth knowing: the JBL Partybox 300 is discontinued, though it still ranks #10 of 39 party speakers by sound quality, so a used unit beats most of what is still sold new.
Buy the Electrotec Stage One at $1450 if you want a battery-powered PA speaker. Buy the JBL Partybox 300 at $300 if you want a party speaker instead.
Battery life favors the Electrotec Stage One: rated for 100 hours against 18 hours for the JBL Partybox 300.
If water resistance matters to you, the Electrotec Stage One at IPX6 (powerful water jets) holds up far better than the JBL Partybox 300 at no water resistance.
Looking for alternatives? See the complete PA & Live Sound rankings and Portable Bluetooth rankings.
Specifications Side By Side
| Electrotec Stage One | JBL Partybox 300 | |
|---|---|---|
| Price | $1450 | $300 Discontinued |
| Ranked | #2 of 14 in Battery-Powered PA Speakers | #10 of 39 in Party Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Outputs | Aux, XLR | - |
| Bass Extension (-10dB) | 48Hz | 40Hz |
| Battery Life | 100 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| EQ | Yes | No |
| IP Rating | IPX6 | None |
| Inputs | 2x XLR/6.3mm combo (mic/line), 3.5mm stereo, USB-C audio, USB media player, Bluetooth | - |
| Microphone Input | Yes | Yes (Karaoke mode with echo effect) |
| Party Mode | Yes (SKAA) | No |
| Power Bank | Yes (USB-A + USB-C) | Yes (USB-A) |
| Power Input | AC Power cord | AC Power cord |
| Removable Battery | Yes (dual) | - |
| SKAA | Yes | - |
| SKAA Latency | 19ms | - |
| Stereo | No | Yes (lying down) |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 39.9 lbs (18.1 kg) | 35.3 lbs (16 kg) |
| XLR Input | Yes | - |
| Bluetooth Codecs | SBC | SBC |
| Drivers | Dual 1.5" compression drivers (tweeters) + 2x 4" woofers + passive radiators (PA system configuration) | 2x 6.5" (165mm) woofers + 3x 2.25" (57mm) tweeters |
| Digital Aux Input | No | No |
| Configuration | Battery-powered active PA | - |
| Amplifier Power | 400W | 120W |
| DSP | App-controlled EQ | - |
| Bluetooth | Yes | - |
| Guitar Input | Yes | Yes |
| Cabinet Material | Phenolic and vinyl coated birch plywood | - |
| Rigging | Pole mount | - |
| Maximum SPL | 128dB max output (Manufacturer specified) | - |
| Bluetooth Version | - | 4.2 |
| Dimensions | - | 27" x 13" x 12.7" (685.8 x 330.2 x 322.6 mm) |
| Frequency Response | - | 45Hz - 20kHz (Manufacturer specified) |
| Discontinued | - | Yes |
| Lights | - | Yes |
Related Speaker Comparisons
More top alternatives to Electrotec Stage One:
- Electro-Voice Everse 12 vs Electrotec Stage One
- Electro-Voice Everse 8 vs Electrotec Stage One
- Teufel Rockster Neo vs Electrotec Stage One
- Teufel Rockster Air 2 vs Electrotec Stage One
- Soundboks 4 vs Electrotec Stage One
Prices on this page were last checked September 23, 2026 at 11:24 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Electrotec Stage One: $1450 Electrotec Audio eBay
Pros: An exceptionally capable battery-powered PA: dual removable batteries deliver a claimed 100-hour runtime, and high-efficiency drivers deliver very high output with a measured 48Hz -10dB bass point. It adds app EQ, IPX6 protection, mic and XLR inputs/outputs, USB playback and low-latency SKAA linking, making it unusually flexible for events and performers. Measured bass extension of 48Hz (-10dB).
Cons: It prioritizes maximum output and endurance over truly deep bass, so it will not replace a dedicated subwoofer for low-frequency-heavy music. At 18.1kg it is a substantial carry, and its focused PA-style presentation is less suitable for wide, relaxed living-room listening.
Full Electrotec Stage One review and specifications →
| Amplifier Power | 400W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Bass Extension (-10dB) | 48Hz |
| Battery Life | 100 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Cabinet Material | Phenolic and vinyl coated birch plywood |
| Configuration | Battery-powered active PA |
| DSP | App-controlled EQ |
| Digital Aux Input | No |
| Drivers | Dual 1.5" compression drivers (tweeters) + 2x 4" woofers + passive radiators (PA system configuration) |
| EQ | Yes |
| Guitar Input | Yes |
| IP Rating | IPX6 |
| Inputs | 2x XLR/6.3mm combo (mic/line), 3.5mm stereo, USB-C audio, USB media player, Bluetooth |
| Maximum SPL | 128dB max output (Manufacturer specified) |
| Microphone Input | Yes |
| Omnidirectional | No |
| Outputs | Aux, XLR |
| Party Mode | Yes (SKAA) |
| Power Bank | Yes (USB-A + USB-C) |
| Power Input | AC Power cord |
| Removable Battery | Yes (dual) |
| Rigging | Pole mount |
| SKAA | Yes |
| SKAA Latency | 19ms |
| Stereo | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 39.9 lbs (18.1 kg) |
| XLR Input | Yes |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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JBL Partybox 300: $300 Discontinued eBay
Pros: Exceptional sound quality with crisp, crystal clear highs and midranges, hard punchy bass without muddiness. 2x 6.5” woofers + 3x 2.25” tweeters, bass boost function, 45Hz-20kHz frequency range. 18-hour battery with 10400mAh capacity. Multiple inputs (RCA, USB, 3.5mm aux, mic, guitar). LED light modes (meter/pulse/party). True Wireless Stereo pairing up to 2 units. Measured bass extension of 40Hz (-10dB).
Cons: Hard to carry, too tall, drags on the ground. Max spl and bass extension are only as good as the Partybox 100. No real reason to ever get one, get a Partybox 100 instead. Discontinued.
Full JBL Partybox 300 review and specifications →
| Amplifier Power | 120W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 40Hz |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Digital Aux Input | No |
| Dimensions | 27" x 13" x 12.7" (685.8 x 330.2 x 322.6 mm) |
| Discontinued | Yes |
| Drivers | 2x 6.5" (165mm) woofers + 3x 2.25" (57mm) tweeters |
| EQ | No |
| Frequency Response | 45Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes |
| IP Rating | None |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | AC Power cord |
| Stereo | Yes (lying down) |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 35.3 lbs (16 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
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