Does this stereo have two volume settings? Would like to be able to have the inside play but not outside speakers.

Sorry, cannot help you on this. We only have one set of speakers set up and I don't recall seeing the option for two volume controls, but not sure at all.

What do you need for this to be able to play sirisxm radio?

Hi Jerry, the Sony DSX-M55BT is SiriusXM-Ready and compatible with the SiriusXM Connect Vehicle Tuner (220SXV300 sold separately). There is currently a great mail-in rebate offer for that tuner. You can find it on our website here: http://www.crutchfield.com/p_220SXV300/SiriusXM-SXV300V1-Tuner.html?search=SXV300V1&skipvs=THOpe that helps!Thanks,Don

ASIN	B01H74WC20
Audio Output Mode	Stereo, Surround
Audio Output Type	Speakers
Best Sellers Rank	#17,205 in Electronics ( See Top 100 in Electronics ) #7 in Marine Stereo Receivers
Brand	Sony
Built-In Media	Cap for AUX IN, Trim Ring Collar, Warranty card, Instruction Manual
Color	blue
Compatible Devices	Smartphone, Tablet, Personal Computer
Connectivity Technology	Auxiliary , Bluetooth, NFC, USB
Connector Type	ISO 7736 Single-DIN
Control Method	Remote, Touch
Controller Type	Remote Control, Voice Control
Customer Reviews	4.3 out of 5 stars 959 Reviews
Format	WAV, WMA
Global Trade Identification Number	00027242896017
Item Dimensions D x W x H	7.06"D x 8"W x 2.81"H
Item Type Name	Marine Digital Media Player
Item Weight	2.01 Pounds
Manufacturer	Sony Mobile Communications, (USA) Inc
Model Number	DSXM55BT
Number of Channels	4
Other Special Features of the Product	Pandora
Output Power	55 Watts
Output Wattage	55 Watts
Special Feature	Pandora
Supported Internet Services	Pandora, SiriusXM
Surround Sound Channel Configuration	5.1
UPC	027242896017
Unit Count	1.0 Count
Video Encoding	VOB
Warranty Description	1 year
Wattage	55 watts
Wireless Technology	Bluetooth

DSXM55BT Marine Digital-Media Receiver with Bluetooth and SiriusXM Ready

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