Lub tso suab ua suab nrov yog ib qho khoom siv uas rov kho qhov teeb meem tawm suab nkag mus rau qhov tawm suab uas tsim tawm lub suab. Rov kho qhov teeb liab ntim thiab qib hluav taws xob yuav tsum yog qhov zoo tagnrho-qhov tseeb, qhov ua tau zoo thiab tsis muaj qhov tsis txaus ntseeg. Lub suab khwv yees li ntawm 20Hz txog 20000Hz, yog li lub suab lus ntxiv yuav tsum muaj qhov lus teb zoo nyob hauv qhov kev ntsuas no (me dua thaum tsav lub suab uas tsis tshua muaj neeg hais, xws li woofer lossis tweeter). Nyob ntawm daim ntawv thov, qib fais fab nws txawv heev, los ntawm milliwatt qib ntawm lub mloog pob ntseg mus rau ntau lub cev ntawm TV lossis PC audio, mus txog kaum tawm watts ntawm "mini" lub tso suab hauv tsev thiab tsheb suab, kom lub tsev muaj suab nrov dua thiab kev lag luam tawm suab. Lub kaw lus’s pua pua ntawm cov watt loj loj txaus kom tau raws li lub suab yuav tsum tau ntawm txhua xinesmas lossis auditorium

Lub suab txuas ntxiv yog ib qho tseem ceeb ntawm cov khoom siv multimedia thiab yog siv dav hauv cov khoom siv khoom siv hluav taws xob. Linear audio power amplifiers yeej ib txwm muaj kev lag luam nrov tshaj tawm suab ua lag luam vim lawv tsis tshua muaj qhov distortion thiab lub suab zoo. Xyoo tsis ntev los no, nrog kev tsim cov khoom siv rau kev lag luam ntau yam xws li MP3, PDA, lub xov tooj ntawm tes, thiab lub tshuab hlwb ntawv, qhov ua tau zoo thiab cov ntim hluav taws xob loj tau tsis muaj peev xwm ua tau raws li kev ua lag luam, thaum Class D zog amplifiers tau dhau los ua ntau dua nrov rau lawv cov siab siv thiab loj me me. Qhov kev nyiam. Yog li ntawd, kev ua tau zoo ntawm cov chav ua haujlwm D chav fais fab muaj cov ntawv thov tseem ceeb heev thiab cov kev cia siab tom khw.

Kev txhim kho ntawm lub suab nrov ntxiv tau hnov ​​peb lub lwv: lub tshuab raj hluav taws xob (lub tshuab nqus raj), bipolar transistor, thiab lub tshav pob nyhuv. Lub raj kaw suab nrov muaj suab nrov mellow, tab sis nws yog quab yuam, siab zog noj, tsis tshua ruaj khov, thiab tsis tshua muaj suab nrov teb; bipolar transistor audio amplifier muaj qhov dav dav dav, qhov muaj ntau qhov kev hloov pauv loj, muaj kev ntseeg siab, lub neej ntev, thiab lub cev muaj peev xwm teb tau zoo, tab sis nws lub zog zoo li qub thiab kev tawm tsam yog qhov loj heev, thiab kev ua haujlwm nyuaj nyuaj; FET audio amplifier muaj tib lub suab nrov zoo li lub raj xa hluav taws xob, thiab nws qhov kev hloov pauv tau yog dav, thiab tseem ceeb tshaj, nws qhov kev tiv thaiv yog qhov me me, tuaj yeem ua tiav high efficiency.