Some of us only want a standard Code Practice Oscilator (CPO) to work with a straight key. our own SPO kit as been popular but we have been asked a number of time for a suitable case. well this is a full kit , 'a kit with all the bits' with this you can build a low cost good quailty CPO that will serve you well for years to come. Internal 2 inch speaker gives good volume and tone.
Powered by internal battery pack (4 x AAA Cells).
Standard 3.5mm (1/8th Inch) jack socket for key input and now with 3.5mm Headphone socket for private practice too.