I own an SA11 and have not found the need to replace it in the 10 years Ive owned it. In fact, I have purchased boxes full of replacement tubes as I knew I would never part with this unit. Well, after 10 years I have found something that works better for me, a Passive preamp. If you are interested, email me privately as mine is up for sale. I am in Northern Cal and you are welcome to audition this fine preamp.
