A stacked electrostatic discharge protection clamp for protecting associated devices or circuits comprises two or more series coupled bipolar transistors whose individual trigger voltages Vt1 depend on their base-collector spacing D. The characteristic of the invention is that after the alignment of the bumps of at least two chips, welded bumps will be generated in a high temperature welding to form a welded bump. The floating inputs on the receiver may be continuously biased by connecting them to variable biasing supply voltages through high impedances. The plurality of controls are operably coupled to the processor and provide a mechanism for adjusting a sound created from the audio signal. Controllable release means is provided for releasing a captured ball from the pockets to be received in a ball outlet.