Short answer: the Onn Medium Party Speaker Gen 2. It ranks #45 of 75 boombox speakers by sound quality at $90; the Zealot S78 ranks #75 and costs $159.68, which makes this an easy call rather than a real tradeoff.
What the Onn Medium Party Speaker Gen 2 offers: Under $100 with LED lights synced to music. Simple controls, solid Bluetooth range. Mic input for karaoke/emcee. Built-in FM radio with 16 presets. Aux port. Watch for: Lacking detail compared to the Onn Large Party Gen 2 and not as deep of bass. Only available in the United States and Canada.
What the Zealot S78 offers: A robust 4.4kg party speaker with claimed 120W RMS output, IP67 protection, USB-C charging, a power-bank function, aux, USB and microSD playback, TWS pairing and multiple EQ modes. Reviews find it very loud with useful bass and long claimed battery life, making it a credible choice for outdoor gatherings. Watch for: At high volume, reviews report distortion and fluctuating level, so its headline power is more useful below its maximum setting. It has no app-based EQ, and the bass and midrange refinement do not match better-established boombox speakers; assess its sound in person if tonal accuracy matters.
Buy the Onn Medium Party Speaker Gen 2. It ranks higher for sound quality than the Zealot S78 and costs less, so the other one has nothing left to offer.
If sound quality matters at all to you, skip the Zealot S78. It ranks near the bottom of the 75 boombox speakers, so look higher up the list instead.
There is a real battery-life gap here: the Zealot S78 is rated for 40 hours, the Onn Medium Party Speaker Gen 2 only 20 hours.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Onn Medium Party Speaker Gen 2 | Zealot S78 | |
|---|---|---|
| Price | $90 | $159.68 |
| Ranked | #45 of 75 in Boombox Size Portable Bluetooth Speakers | #75 of 75 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 20 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| FM Tuner | Yes (16 presets) | - |
| IP Rating | IPX7 | IP67 |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | Yes (Party Sync Mode) | No |
| Power Bank | Yes (USB-A, 5V/2.1A) | Yes (USB-A) |
| Power Input | AC Power cord | USB-C |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | Yes (multiple modes) |
| TWS | Yes | Yes |
| USB Playback | No | Yes |
| Built-in Microphone | No | No |
| Amplifier Power | 50W RMS / 200W peak | 120W RMS / 150W peak |
| Dimensions | 9.6" x 10.9" x 15.1" (244.1 x 277.9 x 383 mm) | 16.1" x 6.6" x 7.3" (410 x 167 x 185 mm) |
| Weight | 11 lbs (5 kg) | 9.7 lbs (4.4 kg) |
| Drivers | 8" (203mm) woofer + tweeters | 2x ~120mm (4.72") woofers + 2x ~42mm tweeters + 2x passive radiators |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
How Onn Medium Party Speaker Gen 2 compares with other leading options:
- Tribit Stormbox Blast vs Onn Medium Party Speaker Gen 2
- JBL Partybox Encore 2 vs Onn Medium Party Speaker Gen 2
- JBL Partybox Encore Essential 2 vs Onn Medium Party Speaker Gen 2
- Onn Medium Party Speaker Gen 2 vs JBL Partybox Encore
- JBL Partybox Encore Essential vs Onn Medium Party Speaker Gen 2
Prices on this page were last checked September 16, 2026 at 12:41 AM 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Onn Medium Party Speaker Gen 2: $90 Walmart eBay
Pros: Under $100 with LED lights synced to music. Simple controls, solid Bluetooth range. Mic input for karaoke/emcee. Built-in FM radio with 16 presets. Aux port.
Cons: Lacking detail compared to the Onn Large Party Gen 2 and not as deep of bass. Only available in the United States and Canada.
Full Onn Medium Party Speaker Gen 2 review and specifications →
| Amplifier Power | 50W RMS / 200W peak |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 9.6" x 10.9" x 15.1" (244.1 x 277.9 x 383 mm) |
| Drivers | 8" (203mm) woofer + tweeters |
| EQ | No |
| FM Tuner | Yes (16 presets) |
| IP Rating | IPX7 |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | Yes (Party Sync Mode) |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord |
| Stereo | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 11 lbs (5 kg) |
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: ONN Large Party Speaker Gen 2 vs Medium Party Speaker Gen 2 🤜🤛A Family Feud🔌Plugged In Bass Boost On More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: Skullcandy Barrel XT vs ONN Medium Party Speaker Gen. 2 😬(Both Bass Boost On🔉) The Price is Right?🤑
- Head-to-Head Comparisons
- Onn Medium Party Speaker Gen 2 vs JBL Partybox On the Go
- Onn Medium Party Speaker Gen 2 vs Soundcore Rave Party 2
- Onn Medium Party Speaker Gen 2 vs Sony ULT Field 7
- Onn Medium Party Speaker Gen 2 vs Skullcandy Barrel
- Onn Medium Party Speaker Gen 2 vs Yeahbox Sonic Boom Max 3
- Onn Medium Party Speaker Gen 2 vs Demerbox DB2
- Onn Medium Party Speaker Gen 2 vs Diamondboxx M3
- Onn Medium Party Speaker Gen 2 vs Tronsmart Bang Max
- See all 45 comparisons
Zealot S78: $159.68 Amazon Aliexpress eBay
Pros: A robust 4.4kg party speaker with claimed 120W RMS output, IP67 protection, USB-C charging, a power-bank function, aux, USB and microSD playback, TWS pairing and multiple EQ modes. Reviews find it very loud with useful bass and long claimed battery life, making it a credible choice for outdoor gatherings.
Cons: At high volume, reviews report distortion and fluctuating level, so its headline power is more useful below its maximum setting. It has no app-based EQ, and the bass and midrange refinement do not match better-established boombox speakers; assess its sound in person if tonal accuracy matters.
Full Zealot S78 review and specifications →
| Amplifier Power | 120W RMS / 150W peak |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 16.1" x 6.6" x 7.3" (410 x 167 x 185 mm) |
| Drivers | 2x ~120mm (4.72") woofers + 2x ~42mm tweeters + 2x passive radiators |
| EQ | Yes (multiple modes) |
| IP Rating | IP67 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 9.7 lbs (4.4 kg) |
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: W-King X20 vs Zealot S78 Bluetooth Boombox Battle Outdoor Tailgater Special 🚗 Let the Whoopin’ Begin More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: DBSOARS F29 Max vs Zealot S78 🛜 (5B) Budget Bluetooth Boombox Basement Battle 🔊 Bass Modes Enabled
- Head-to-Head Comparisons