Vtube Vacuum tube simulation This device is the state of the art Vacuum tube simulation. To be honest we have never heard something similar ever. It uses the latest technology improvements and patents to implement a very powerful and ... Cost: $119 Buy full version       Trial version       Publisher: AUDIO DEVELOPMENT     Descriptions Vtube Vacuum tube simulation: This device is the state of the art Vacuum tube simulation. To be honest we have never heard something similar ever. It uses the latest technology improvements and patents to implement a very powerful and delightful warm simulator. You can use it together with any existing compressor, filter, synthesizer and it will transform your sound in an amazing way.