Sony MEX-BT31PW Specification Guide

Page of 5
Specifications
Amplifier Section
Max power output
52 watts x 4 at 4 ohms
Power Ad Hoc
CEA2006 Standard Power: 17 Watts RMS per channel 
into 4 Ohms, 4 channels driven from 20 Hz to 20 kHz with 
less than 1% THD+N.
Speaker 
Impedance
4-8 Ohms
AMP & General Feature
Automatic Level 
Optimizer
Yes
Aux-In
Front
DM+ (Codec 
enhancer)
Gen2.1
EQ
EQ7: 7 band EQ with +/- 6 dB adjustment at 63 Hz, 160 
Hz, 400 Hz, 1000 Hz, 2.5 kHz, 6.3 kHz and 16 kHz. 
High Pass Filter
Selectable on/off at: 50, 60, 80, 100 or 120 Hz. 
Loudness
Dynamic Loudness
Low Pass Filter
Selectable on/off at: 50, 60, 80, 100 or 120 Hz. 
Output Power 
(4ohm, 1kHz,16V)
(W)
52 watts x 4 
Pre Out
(2)  Front, Rear and Sub selectable
Rear/Sub initial
Sub
Rear Bass 
Enhancer
Yes
Subwoofer Direct 
Connection
Yes
Time Alignment 
Custom
Adjustment
Time Alignment 
Preset
Yes
Audio
Band
AM / FM
Equalizer
EQ7: 7 band EQ with +/- 6 dB adjustment at 63 Hz, 160 
Hz, 400 Hz, 1000 Hz, 2.5 kHz, 6.3 kHz and 16 kHz. 
Format(s) 
Supported
MP3/WMA/AAC files
1
Preout Impedance 220 ohms
Preout Voltage
2 volt
S/N Ratio
Audio Power: CEA2006 S/N 80 dBA
Signal-to-Noise 
Ratio (dB)
CD: 120 dB
Station Preset(s)
18 FM / 12 AM  
Tuner Frequency 
Range
FM (MHz): 87.5-107.9
AM (kHz): 530-1710
Tuner Type
Digital clarity tuner with RDS
Convenient control panel design
The easy-to-read single line LCD display shows source information, clock, station ID and track 
data when playing back digital files from CD, streaming audio or external USB devices.  Front 
auxiliary input lets you connect almost any portable audio device to your car's sound system. 
Powerful in-dash amplification 
The internal Dynamic Reality Amp delivers 52 watts x 4 to your interior speakers, allowing you to 
crank up the volume while maintaining low distortion, low noise levels and smooth frequency 
response.  Your music isn’t just louder, its clearer too.  
RCA outputs for system expansion
When you’re ready to expand your system, the MEX-BT31PW offers 2 volt front and rear/sub 
selectable pre-amp RCA outputs for external amplifiers.  The adjustable subwoofer level control 
also lets you dial in the bass when you’re ready to pump it up.   
The immaculate reception
The Digital Clarity Tuner delivers industry leading signal to noise ratios, lower interference, better 
multipath rejection and better stereo separation. The RDS feature displays broadcast information 
when listening to compatible AM/FM stations.   
Convenient wireless remote included
Control your receiver while keeping your eyes on the road with the included wireless card remote 
(RM-X231).
Button Illumination
Blue key illumination helps you locate buttons quickly during evening playback.
Steering wheel control ready input
7
This receiver is compatible with aftermarket remote control adapters
7
 designed to utilize the 
vehicles existing, primary radio controls directly from the steering wheel.  The 1/8” rear panel 
mounted remote input jack allows for simple connectivity.