When evaluating a machine for sale, ensure it includes these high-quality "Big Three" components. Subpar parts lead to overheating or ineffective frequency delivery.

This is the "brain." It must be precise to 0.1 Hz. Digital generators or tablet-based software (like Custom-Built interfaces) are standard. 🔍 3. Where to Buy (Reputable Sources)

Before sending payment, ask the builder or seller these questions: