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

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

Smart Speaker · Updated July 2026 · Live prices
JBL Xtreme 4 - Portable Waterproof Speaker - Blue
A
JBL Xtreme Portable Waterproof Speaker
JBL
★★★★★ 4.5 · 688 reviews
$379.95
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 Xtreme Portable Waterproof Speaker
Loud and clear sound for outdoor use
Waterproof design for worry-free use
Long battery life for all-day listening
Durable construction for rough handling
No significant upgrades from previous model
Bass can be overpowering at high volumes
No built-in voice assistant
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 Xtreme Portable Waterproof Speaker
73/100
VS
Marshall Stanmore II Bluetooth Speaker
83/100
Quality & Performance (45%)
90%
91%
Reliability & Confidence (25%)
82%
68%
Value Metric (20%)
60%
74%
Deal Timing (10%)
0%
100%

Quick verdict

Overall Winner
Marshall Stanmore II Bluetooth Speaker
Best Value
Marshall Stanmore II Bluetooth Speaker
Best Rated
Marshall Stanmore II Bluetooth Speaker
Most Reviewed
JBL Xtreme Portable Waterproof 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 JBL Xtreme Portable Waterproof Speaker has more verified reviews.

Winner by category

CategoryJBL Xtreme Portable Waterproof SpeakerMarshall Stanmore II Bluetooth SpeakerWinner
ValueMarshall Stanmore II Bluetooth Speaker$129.96 cheaper
RatingMarshall Stanmore II Bluetooth Speaker4.6★
ReliabilityJBL Xtreme Portable Waterproof Speaker688 reviews
Deal ScoreMarshall Stanmore II Bluetooth Speaker100/100
OverallMarshall Stanmore II Bluetooth SpeakerRating × Reviews

Price comparison

JBL Xtreme Portable Waterproof Speaker
$379.95
Lowest ever: $249.95
0/100
Difference
$129.96
Marshall Stanmore II Bluetooth Speaker
$249.99
Lowest ever: $249.99
100/100

Price history

JBL Xtreme Portable Waterproof SpeakerMarshall Stanmore II Bluetooth Speaker
A lowest ever$249.95
B lowest ever$249.99
Current A$379.95
Current B$249.99

Key specs

SpecJBL Xtreme Portable Waterproof SpeakerMarshall Stanmore II Bluetooth Speaker
Waterproof
Wireless

Full specifications

SpecJBL Xtreme Portable Waterproof SpeakerMarshall Stanmore II Bluetooth Speaker
Waterproof
Wireless

Price intelligence

◆ HawkShift AI
30 scans
Every 0.8d avg
Current Price
$379.95
Predicted 7D
$370.87
$9.08 (2.39%)
Predicted 30D
$362.63
$17.32 (4.56%)
AI Signal
Wait
1% confidence
Price
EMA
LOESS
Forecast
Low
$249.95
Avg
$298.95
High
$379.95
Now
$379.95
Price Intelligence
TrendDOWN
Confidence1%
Volatility30.9%
Data QualityHigh
Scan Freq0.8d
Key Levels
Resistance$379.95
Support$284.38
All-Time High$379.95
All-Time Low$249.95
AI Factors
🌙 SeasonalNone
🏷 Promo 7D85%
📅 Next Event
Back to School
Recommendation
Wait
Price is within 8% of historical floor ($284.38)
Price Range
$249.95$379.95
100th percentile
Confidence Intervals
7 Day
$342.22$379.95
30 Day
$237.45$292.95
Trend Strength
0.09Weak
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 Xtreme Portable Waterproof Speaker has Waterproof
Marshall Stanmore II Bluetooth Speaker has Wireless

Performance analysis

Performance

The Marshall Stanmore II Bluetooth Speaker holds a 4.6★ rating edge.

Value

At $249.99, the Marshall Stanmore II Bluetooth Speaker is $129.96 cheaper.

Reliability

The JBL Xtreme Portable Waterproof Speaker has more reviews (688).

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 Xtreme Portable Waterproof Speaker if...
This portable speaker delivers impressive sound quality and durability for its price. At $299.95, it's a solid choice for outdoor enthusiasts. With a 4.50/5 rating from 688 reviews, it's a reliable pick. Buy this if you need a rugged, high-quality speaker.
○ Wait for a price drop
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 Xtreme Portable Waterproof 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 73/100. That said, the JBL Xtreme Portable Waterproof 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 Xtreme Portable Waterproof Speaker and Marshall Stanmore II Bluetooth Speaker worth it?
The Marshall Stanmore II Bluetooth Speaker is $129.96 cheaper at $249.99. That's a meaningful gap. Unless the pricier JBL Xtreme Portable Waterproof Speaker offers features you specifically need, the Marshall Stanmore II Bluetooth Speaker is the smarter buy for most people.
Which is more reliable: JBL Xtreme Portable Waterproof Speaker or Marshall Stanmore II Bluetooth Speaker?
The JBL Xtreme Portable Waterproof Speaker has been reviewed 688 times — more than the Marshall Stanmore II Bluetooth Speaker's 237 reviews.
Who should buy the JBL Xtreme Portable Waterproof 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 Xtreme Portable Waterproof Speaker or the Marshall Stanmore II Bluetooth Speaker?
Right now the JBL Xtreme Portable Waterproof Speaker is $379.95 and we expect it to fall — worth waiting; 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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