
Bose
SoundLink Flex Series
Compact, durable, impressive sound for size, but distorts high volume.

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I only have the GP3 in HK speakers and it sounds great. I heard the Onyx sound great at lower levels decent bass if it’s at lower volume especially the 9. I only have the Ult Field 1 and its bass is decent for its size I’ve heard it has a deeper bass than the JBL charge 5.
I got the HK Onyx 9 for half price and that speaker blows my mind. I’ll try bringing it to the beach with me in the summer.
It goes 30hz. Even the tiny 4.5inch woofer on hk onyx 9 has a bass peak at 34hz
hands down onyx 9. proper deep rumble at 30hz. it as a big bass peak at 52ish hz and a secondary peak at 34hz. I had onyx 6 for years and recently got onyx 9. both of these are like a subwoofer when you place the right. they even have proper deep bass even at 10% volume.
onyx 8 vs 9? I have heard people complaining about the onyx 9 crossover and how onyx 8 is louder and more boomy at low volumes
The 5 is an amazing speaker. I have the 5 and the 9. I've used the 5 a lot more than the 9. Generally speaking, for portable Bluetooth speakers, Harman is in a category of their own achieving such great sound at low wattage.
Onyx 9, good option. If you're lucky you can find 2 Onyx 8 and listen in stereo
I have an Xtreme 2 and Harman Onyx Studio 9. The Onyx is a clear step up in clarity, fidelity and bass extension.

Bose
SoundLink Flex Series
Compact, durable, impressive sound for size, but distorts high volume.

Minirig
Minirig 4
Tiny, unrivaled sound for DJs, but pricey with bad Bluetooth.

JBL
Charge 6
Portable, durable, punchy bass, but distorts up close, dull vocals.

soundcore
Boom 2 Plus
Budget king for loud, deep bass; bulky with harsh mids.

Anker
Select 4 Go
Great value, good stereo paired, but lacks power for parties.

Ranked #1
Anker - Select 4 Go

Ranked #1
Harman Kardon - Go + Play 3

Ranked #1
LG Electronics - XBOOM Grab

Ranked #1
soundcore - Boom 3i

Ranked #1
JBL - PartyBox 520

Ranked #1
Bose - SoundLink Flex Series