Bose SoundLink Flex 2nd Gen Black
Score: 85/100
Sony ULT Power Sound
Score: 87/100Rankings
The Sony ULT Power Sound series offers rugged, IP67-rated speakers with long battery life, strong bass and customizable lighting. It excels for outdoor parties and camping, though audiophiles may miss high-resolution codecs and a wired aux input.
The Bose SoundLink Flex (2nd Gen) is a compact, rugged Bluetooth speaker with IP67 protection, 12 h battery life, and adaptive PositionIQ sound. It adds Bluetooth 5.3, aptX and multipoint pairing while retaining the core acoustic design of the first generation.
| Attribute | | |
|---|---|---|
12 hours | 30 hoursbest | |
| ↓ lower better | 4 hoursbest | — |
9 metersbest | — | |
| ↓ lower better | 590 gbest | 670 g |
— | 114 mmbest | |
1 yearsbest | — | |
1 metersbest | 1 metersbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Battery & Power(1) | ||
Battery Life (hours) | 12 hours | 30 hours |
Build & Design(1) | ||
Weight (g) | 590 g | 670 g |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the Flex for its premium build, IP67 rating and the Bluetooth 5.3 upgrade that adds reliable multipoint pairing, while noting the lack of a more robust EQ and only incremental hardware changes.
Everyday users love the speaker's durability, floating ability and the convenience of pairing two phones at once, but complain about the missing AUX jack, mushy buttons and limited EQ options.
“Survived a drop in the pool and kept playing”
“Perfect for camping - loud, clear, and tough”
“Love that it pairs with two phones at once”
Professional reviewers praise the series for its powerful bass, durable IP67 build and innovative app-driven EQ and lighting, while noting the absence of high-resolution codecs and wired inputs.
Everyday users love the durability, impressive bass and long battery life, but many wish for an aux input and complain that the lighting drains the battery.
