All 3 amps within my price range (<£300): Harman Kardon HK3490 (120W), Marantz PM6004 (45W), Cambridge Audio AZUR 650A (75W). I have a pair of Celestion DL8 Series 2 speakers, capable of handling 150W, and I read reviews that they like to be driven by higher power. At the moment, the Harman Kardon has the highest power, and more functionalities such as optical in, and more importantly, additional preamp output for subwoofers, which I think I'd like to add some extra clear and punchy low frequencies bass. I'm a newbie in Hi-Fi. Any opinions much appreciated. Jack.