Darkglass Electronics Fanpage - NOV 2018 Microtubes B7K Ultra V2 "Gold" Limited Edition (Limited to 100) Still available here: https://www.zzounds.com/item--DARB7KULTRAV2 and here: https://www.americanmusical.com/Item--i-DAR-B7KULTRAV2-LIST | Facebook
![Amazon.com: Darkglass Microtubes B7K Ultra V2 Preamplificador de graves, Truetone 1 SPOT Slim 9V DC Adaptador Bundle : Industrial y Científico Amazon.com: Darkglass Microtubes B7K Ultra V2 Preamplificador de graves, Truetone 1 SPOT Slim 9V DC Adaptador Bundle : Industrial y Científico](https://m.media-amazon.com/images/I/710uNxXgPeL.jpg)