That is not the first time I have heard these amps compared to very expensive amps and most of the time the Class D's win or it seems they do. If they are like the Nuforce amps I probably will like them since I like their preamp very much and with their price they are a steal in the world of high end audio. If I have to buy a case to put the circuits in and wire it myself then oh well I think it will be fun since it has been a while since I have had my hands on a electrical component build. My Debit card is itching in my wallet wanting to just order the SDS 258 and forget about it but I am getting married next month and have some other thing going right now but after things settle down I think I am going to order one and retire my Adcom to rear speaker duty since it is getting older.