

依幾代denon唔算有好大分別, 2xxx都係入門級, 冇preout, 7.2ch, highlight番今代3系升級左dsp chip, 令佢可以食到付費購買既dirac live, 仲有support 4隻subwoofer, 其他野冇咩變動
入門我自己會比較推3xxx, 有preout靈活性大好多, 亦都多左2條channel可以直接玩5.1.4, 如果搵到3700既清貨價我絕對大力推薦

lfe channel係multichannel signal入面專for low frequency (<120hz)既channel, 比一般既sub out carry更多information, 你可以用一條rca由avr sub out去subwoofer既L/R, speaker set番去small同岩既crossover, 唔需要用y splitter