Home//Compare//JBL Waterproof Portable Speaker vs Marshall Stanmore II Bluetooth Speaker

JBL Waterproof Portable Speaker vs Marshall Stanmore II Bluetooth Speaker — Which Is Better?

Smart Speaker · Updated July 2026 · Live prices
JBL Boombox 4 - Most powerful JBL portable waterproof speaker with massive JBL Pro Sound - Black
A
JBL Waterproof Portable Speaker
JBL
★★★★★ 4.7 · 63 reviews
$449.95
was $549.95
View deal →
Overall Winner
Marshall STANMOREIIIC Stanmore III Bluetooth Speaker System - Cream
B
Marshall Stanmore II Bluetooth Speaker
Marshall
★★★★★ 4.6 · 237 reviews
$249.99
was $379.99
View deal →

Pros & cons

JBL Waterproof Portable Speaker
Loud sound for large groups
Waterproof for worry-free outdoor use
Long battery life for all-day listening
Durable construction for rough handling
Expensive compared to smaller speakers
Heavy for solo carrying
No significant updates to previous model
Marshall Stanmore II Bluetooth Speaker
Rich, balanced sound
Long battery life
Durable construction
Easy to use
No water resistance
No microphone for calls
Bass could be stronger

Universal Composite Score

JBL Waterproof Portable Speaker
78/100
VS
Marshall Stanmore II Bluetooth Speaker
83/100
Quality & Performance (45%)
93%
92%
Reliability & Confidence (25%)
52%
68%
Value Metric (20%)
67%
74%
Deal Timing (10%)
100%
100%

Quick verdict

Overall Winner
Marshall Stanmore II Bluetooth Speaker
Best Value
Marshall Stanmore II Bluetooth Speaker
Best Rated
JBL Waterproof Portable Speaker
Most Reviewed
Marshall Stanmore II Bluetooth Speaker
TL;DR
  • Composite pick (demand + value + deal): Marshall Stanmore II Bluetooth Speaker.
  • If price matters most, the Marshall Stanmore II Bluetooth Speaker offers better value at $249.99.
  • The Marshall Stanmore II Bluetooth Speaker has more verified reviews.

Winner by category

CategoryJBL Waterproof Portable SpeakerMarshall Stanmore II Bluetooth SpeakerWinner
ValueMarshall Stanmore II Bluetooth Speaker$199.96 cheaper
RatingJBL Waterproof Portable Speaker4.7★
ReliabilityMarshall Stanmore II Bluetooth Speaker237 reviews
Deal ScoreTie100/100
OverallMarshall Stanmore II Bluetooth SpeakerRating × Reviews

Price comparison

JBL Waterproof Portable Speaker
$449.95
Lowest ever: $449.95
100/100
Difference
$199.96
Marshall Stanmore II Bluetooth Speaker
$249.99
Lowest ever: $249.99
100/100

Price history

JBL Waterproof Portable SpeakerMarshall Stanmore II Bluetooth Speaker
A lowest ever$449.95
B lowest ever$249.99
Current A$449.95
Current B$249.99

Key specs

SpecJBL Waterproof Portable SpeakerMarshall Stanmore II Bluetooth Speaker
Waterproof
Wireless

Full specifications

SpecJBL Waterproof Portable SpeakerMarshall Stanmore II Bluetooth Speaker
Waterproof
Wireless

Price intelligence

◆ HawkShift AI
30 scans
Every 0.8d avg
Current Price
$449.95
Predicted 7D
$438.39
$11.56 (2.57%)
Predicted 30D
$442.13
$7.82 (1.74%)
AI Signal
Strong Buy
21% confidence
Price
EMA
LOESS
Forecast
Low
$449.95
Avg
$503.28
High
$549.95
Now
$449.95
Price Intelligence
TrendDOWN
Confidence21%
Volatility7.7%
Data QualityHigh
Scan Freq0.8d
Key Levels
Resistance$543.75
Support$449.95
All-Time High$549.95
All-Time Low$449.95
AI Factors
🌙 SeasonalNone
🏷 Promo 7D85%
📅 Next Event
Back to School
Recommendation
Strong Buy
High probability of sale event in next 7 days
Price Range
$449.95$549.95
0th percentile
Confidence Intervals
7 Day
$423.19$453.59
30 Day
$530.17$549.95
Trend Strength
0.76Strong
R² SCORE
Price Momentum
0.00%
vs last 7 scans
◆ HawkShift Price Intelligence · Predictions updated every scan
◆ HawkShift AI
30 scans
Every 0.8d avg
Current Price
$249.99
Predicted 7D
$279.99
$30.00 (12.00%)
Predicted 30D
$299.99
$50.00 (20.00%)
AI Signal
Strong Buy
4% confidence
Price
EMA
LOESS
Forecast
Low
$249.99
Avg
$364.99
High
$399.99
Now
$249.99
Price Intelligence
TrendUP
Confidence4%
Volatility20.7%
Data QualityHigh
Scan Freq0.8d
Key Levels
Resistance$399.99
Support$253.13
All-Time High$399.99
All-Time Low$249.99
AI Factors
🌙 SeasonalNone
🏷 Promo 7D85%
📅 Next Event
Back to School
Recommendation
Strong Buy
High probability of sale event in next 7 days
Price Range
$249.99$399.99
0th percentile
Confidence Intervals
7 Day
$263.08$296.90
30 Day
$341.15$379.99
Trend Strength
0.54Moderate
R² SCORE
Price Momentum
0.00%
vs last 7 scans
◆ HawkShift Price Intelligence · Predictions updated every scan

Feature differences

JBL Waterproof Portable Speaker has Waterproof
Marshall Stanmore II Bluetooth Speaker has Wireless

Performance analysis

Performance

The JBL Waterproof Portable Speaker holds a 4.7★ rating edge.

Value

At $249.99, the Marshall Stanmore II Bluetooth Speaker is $199.96 cheaper.

Reliability

The Marshall Stanmore II Bluetooth Speaker has more reviews (237).

Overall

Based on rating and review volume, the Marshall Stanmore II Bluetooth Speaker comes out ahead for most buyers.

Who should buy each

Buy the JBL Waterproof Portable Speaker if...
At $449.95, this portable speaker delivers massive sound. With a 4.70/5 rating from 63 reviews, it's a top choice for outdoor use. Limited real-world data exists, but feedback is overwhelmingly positive. Buy this for reliable, powerful sound on-the-go.
● Strong buy
Buy the Marshall Stanmore II Bluetooth Speaker if...Recommended
This Bluetooth speaker system is a top choice for music lovers, with a high rating and decent review count. At $249.99, it's a solid investment for those seeking quality sound. With a 4.60/5 rating from 237 reviews, it's clear that customers love this product. Buy this if you want a reliable speaker with good sound quality.
● Strong buy

Frequently asked questions

Which is better: JBL Waterproof Portable Speaker or Marshall Stanmore II Bluetooth Speaker?
Based on our composite score, the Marshall Stanmore II Bluetooth Speaker is the stronger overall choice with a score of 83/100 vs 78/100. That said, the JBL Waterproof Portable Speaker is still a solid product — if it's cheaper or better suited to your use case, it remains a good buy.
Is the price difference between JBL Waterproof Portable Speaker and Marshall Stanmore II Bluetooth Speaker worth it?
The Marshall Stanmore II Bluetooth Speaker is $199.96 cheaper at $249.99. That's a meaningful gap. Unless the pricier JBL Waterproof Portable Speaker offers features you specifically need, the Marshall Stanmore II Bluetooth Speaker is the smarter buy for most people.
Which is more reliable: JBL Waterproof Portable Speaker or Marshall Stanmore II Bluetooth Speaker?
The Marshall Stanmore II Bluetooth Speaker has been reviewed 237 times — more than the JBL Waterproof Portable Speaker's 63 reviews.
Who should buy the JBL Waterproof Portable Speaker vs the Marshall Stanmore II Bluetooth Speaker?
Buyers who want the proven option with stronger overall metrics should go with the Marshall Stanmore II Bluetooth Speaker. Budget-conscious buyers should lean toward the Marshall Stanmore II Bluetooth Speaker at $249.99.
Is now a good time to buy either the JBL Waterproof Portable Speaker or the Marshall Stanmore II Bluetooth Speaker?
Right now the JBL Waterproof Portable Speaker is $449.95 — its lowest tracked price, and our forecast says buy; the Marshall Stanmore II Bluetooth Speaker is $249.99 — its lowest tracked price, and our forecast says buy. See the full price intelligence for each below.
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