Score!  A friend of mine brought over his headphone tube amp for me to try.  He’s letting me use it for a few weeks in exchange for working on his bicycle, how sweet is that?    It’s the Extreme model made by Singlepower Audio Inc (apparently defunct).  The L&R output tubes have makings: on...

I just got my Sennheiser HD 650. They sound great! This is my first decent set of headphones since I got my Realistic LV-10 circa 1975. Um... er... were they decent? . For now, I'm just running them off the headphone jack of my Yamaha RX-797 receiver. I'll keep ya posted. Right...

Here's a thought. With Wi-Fi music servers becoming popular, I wonder if a Wi-Fi enabled headphone could produce near audiophile sound quality. I don't know much about Wi-Fi. Perhaps we have to wait for Wi-Fi The Next Generation (Wifi TNG). Perhaps KLEER in the Sennheiser RS 160/170/180 is...