This NAT Audio Signature Phono Stage is a tubed phono stage that offer complete cartridge loading via rear accessible DIP switches. It has brand new batteries with ZERO hours on them. Yes it is a battery isolated phono! I am offering a package deal with my other listing, the Symmetrical Preamp for $5500. Buyer to pay actual shipping costs and all PayPal and listing fees. Yes Buyers choice silver or black, I have 2. I will keep one. I put $125 as flat rate shipping. I will adjust after shipping for actual costs.