Designed to work with Lo-MC cartridges. Amplification is up to 85dB. RIAA (pre) amplifier is based on the following priciple: jfet current followers are for the current amplification, transformers are for the voltage amplification - both together are for the power amplification. Signal curve correction is based on the Inductances, Resistors and Transformers - IRT RIAA. There is no capacitors in the path. Attached photo is just for reference, real product PCBs with components can differ. Price is for reference (for the PCBs and components, without chassis and PSUs). Price for the final product in the finished box is a matter for extra calculation.