Greeting from L.A. (great Tim Buckley album and I'm in Los Angeles) Wondering if this feature is in the checkout or by special request. Also would this effect the signal or create some kind of added noise in the circuit. I guess not. I don't think Steve would add that if it did. This is my first foray into tubes. Getting ready to pull the trigger on this amp. One more thing....does anyone know if there will be a coupon for Christmas. Just spent some serious $ on a restored Thorens from Vinyl Nirvana. Maybe I should just jump in. These are a great deal from the reviews. Thanks.