The Second Hand LINEAR AMP Balanced SPC Supertuner is a robust device engineered to manage high power levels, accommodating coaxial and balanced line feeds. This tuner features wide-spaced capacitors and a silver-plated primary inductor, ensuring durability and efficiency under demanding conditions. The sizeable ceramic switch is designed to handle input power up to 1500W, making it suitable for serious amateur and professional radio operators alike.

One of the standout features of the SPC Supertuner is its instant bypass mode, allowing seamless operation with coax or balanced feeds while keeping the balun in the circuit. The balanced line is powered by a large double toroidal transformer, insulated with specialized fibreglass sleeving to minimize flash-over risk between windings. This design consideration enhances the overall safety and reliability of the tuner during operation.

The SPC Supertuner is equipped with a large VSWR/Power meter that displays readings up to 150W on the low scale and 1500W on the high scale, providing precise performance monitoring. It requires a 12V DC supply for relay operation and meter illumination, which is included. With a frequency range of 10-160m, three output options (coax 1, coax 2, balanced feed), and a compact size of 325 x 350 x 165mm at a weight of 4.2 kg, this tuner is a powerful addition to any radio setup.