Dont use a Lepai 2020 because the quality will be average and you cannot get the full power of passive speakers,i recommend the topping tp20 for better sound quality,Pioneer sp 22 are designed by Andrew Jones who also designed their premium reference one speakers,so you will be able to get better audio quality but at the price of near 130 dollars.So Micca MB42+Topping TP 20 is your best choice,Lepai 2020 is not bad but just decent at 20 dollars it's just pure value.