I purchased one of these units (two channel) for tuning my classic twin cylinder motorcycles. It is well made (in Australia) and extremely simple and straightforward to use, with great accuracy and adjustable damping for stability. Regardless of how many years tuning experience you have using a tool like this takes away all the errors and quickly sets up your machine to run perfectly. The response from pick up from idle is amazing, I am very happy with this product. Good work Raytech!