Sorry, SVpre has been discontinued, and we’re completely out of stock. We had considered developing an internal tube mod for the Spider Valve MkII amps, though unfortunately we’re unable to pursue the development of this specific replacement product.
We have many projects cooking in the Strymon labs, and hope to develop something that would be suitable as a replacement for SVpre. We can’t provide details or estimated release dates for products in development. Please keep an eye on our blog and our Facebook page, we’ll post new product information there first. Thanks for your understanding.