inputs.text: no brainer upgrade alpine head unit - added cde102 08 altima sedan still running stock speakers pros installed 20 minutes great improvement sound levels midbass especially normal listening levels no cuttingrewiring cons slight amount background noise tracks not noticeable type playback silent parts inbetween overall no brainer upgrade alpine head unit piece cake install improvement money outstanding cant find decent amp 100 run 4 speakers easily actually looking forward replacing stock speakers someday without wiring hassle