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Editor's Notes & Price Research
Receives 4.6 stars out of 5 stars with 180 customer reviews on Best Buy.com.
Our research indicates that Sony SRS-X55 Portable Bluetooth Speaker is $70 less (39.30% savings) than the next best price from a reputable merchant with prices starting from $178. -slickdewmaster
Best price I've seen on this speaker—it's currently $179 at Amazon, and even 3Camel doesn't have it going below $140.
Received mine from Amazon today and it sounds unbelievable, so either returning + buying from Best Buy or pleading a price match with Amazon!
The x77 has a higher premium than the x55 for wifi capability and for the songpal app to be able to connect via wifi and adjust the equalizer levels on the x77, which the x55 does not have the ability to do.
X33 is rated at 10W + 10W Speakers with no dedicated Subwoofer, same power on battery or plugged in.
X55 is rated at 5W + 5W Speakers with 20W Subwoofer plugged in, with 3W + 3W with 14W on battery.
X77 is rated at 10W + 10W Speakers with 20W Subwoofer plugged in, with 6W + 6W with 12W on battery.
This information is found at:
X33 (Pg. 1, 3rd Column, Specifications, Amplifier Section): https://docs.sony.com/release//SR..._ES_FR.pdf
X55 (Pg. 1, 2nd Column, Specifications, Amplifier Section): https://docs.sony.com/release//SR..._ES_FR.pdf
X77 (Pg 25, Specifications, Section for Amplifier):
Hope that helps!