Obsidian Balance Upgrader is a VERY thin upgrader that is really helpful, but it's hard for the ores to make it past, but if they do its multiplication is INSANE. It increases the value with 1400% (15 times) and has an apply limit of 3. That's a total of 3375 times the value! Obsidian Balance can only be obtained from Supreme pack.
One way of using this upgrader is by putting two Narrowing Conveyors, then a Conveyor Ramp. That way the ores should go trough the upgrader.