i don't see where anyone suggested the nad, but they are excellent units, i would buy the most power i could buy in the nad intergrated sereis, they are very musical but you don't want to drive them real hard, they do have the protection, but buy POWER, also , i believe the audio advisor will let you return within 30 days...good listening , also i wanted to mention, there is a musical fidelity intergrated for 700 on audiogon, and iknow that is a beast and i have owned one.....