All coils bought were of high quality, they all worked reliably. Make sure, that antenna wire is raised straight above coil before first power on - or the short discharge from antenna may damage the coil. Also the 18 V from adapter supplied is rather high voltage as it causes fast heating of both transistors without forced cooling. The circuit lifetime will be probably higher at lower source voltage.

All coils bought were of high quality, they all worked reliably. Make sure, that antenna wire is raised straight above coil before first power on - or the short discharge from antenna may damage the coil. Also the 18 V from adapter supplied is rather high voltage as it causes fast heating of both transistors without forced cooling. The circuit lifetime will be probably higher at lower source voltage.

All coils bought were of high quality, they all worked reliably. Make sure, that antenna wire is raised straight above coil before first power on - or the short discharge from antenna may damage the coil. Also the 18 V from adapter supplied is rather high voltage as it causes fast heating of both transistors without forced cooling. The circuit lifetime will be probably higher at lower source voltage.

Works great music sounds good too. I was impressed good value. Warning it gets hot so watch your fingers and let it cool down. Excellent value for the money. Thank you Banggood

Works great music sounds good too. I was impressed good value. Warning it gets hot so watch your fingers and let it cool down. Excellent value for the money. Thank you Banggood

Works great music sounds good too. I was impressed good value. Warning it gets hot so watch your fingers and let it cool down. Excellent value for the money. Thank you Banggood