inputs.text: enjoyable mp3 player amplifier combination kentiger - hy502 stereo btl 32 watt rms amplifier 8 ohms tone controls incorporating fm player usbsd player digital display light show supplied without power supply hy502 outstanding value 1500 good performance good sounding convenient useful features good tone adjustment range bright nonadjustable light show not related music played usb sd mp3 player good performance incorporating useful digital eq nonsaturating properly implehemented 5 programs rehemehembers digital volume track played rehemote selects track play volume eq mode fm good sounding automatically presets fm stations selected using rehemote enter two digit codethe bass adjustment range 20 db treble adjustment range 42 db bass treble effect response 1khz 1db mismatch btl amplifier sections unit produces 52 watts peak peak 4 ohms 32 watts rms average power 8 ohms amplifier components three pwbs using throughhole components amplifier incorporates two mono btl ic amplifiers flux residue left pwbs due hand soldering digital volume control acts functions no audible power supply noise amplifier produces pop speakers turned turned power switch no pop using rehemote switch standby standby not act light show no direct tone bypass mode front panel plastic amplifier response excellent 3db 17hz 16db 61hz frequency range bass 10 11 oclock treble 9 11 oclocki use hy502 listen mp3 music headphones use tone controls digital eq first mp3 player found digital eq useful not saturate not insert unacceptable digital artifactsonly nitpick channels reversed mp3 connector rear panel listening speakers find bass control limited digital eq settings bass much settings perfect listening headphones not room eq issuesi disconnected light show reduce power supply noise visual distraction requires disassehembly unit unplugging light show pwblight show 9 patterns variationslights red blue green red blue green red blue left right1 light sequentially left right2 extinguish sequentially left right3 light sequentially right left4 extinguish sequentially right left5 single light steps right left6 single light steps left right7 four lights right go off8 four lights left go off9 repeat 7 8 four times10 left light rgb sequence group 3 across11 right light brg sequence group 3 across12 starting right sequentially light leds13 starting right sequentially turn leds14 repeat 12 1315 starting right left sequentially light lights starting center sequentially turn lights manner turned on16 starting left light every led turn off17 starting right light every led turn off18 repeat 16 17 4 times19 turn leds off20 repeat 9 times