Octave Voyetra 8 rev 3 For Sale. Our tech has been working out a way to convert r3 machines to revision 4, both software AND hardware. This was previously thought to be impossible. Hopefully he'll be ready to do this soon. Meanwhile, we have a rev 3 voyetra we can refurbish for you. If you require a rev 4, please search our site for Voyetra to see if we have one in stock. Or, if you'd like us to fully restore and upgrade your v8 to work better than it did when it left the factory and the huge cost of such extensive work isn't a deterrent, please contact us to discuss.