from the manufacturer)Copla is a moving coil step-up amplifier designed to drive a moving magnet phono pre amp. It is the active electronic equivalent of a step-up transformer (SUT), allowing control of active moving coil impedance. One dial provides variable added richness and dimension to the response of your moving coil cartridge. You use it like a Tone knob. Copla has an optically isolated power supply for low noise, allowing liquid, cohesive midrange and deep soundstaging. Solid-state circuitry operates at low impedance for superior hum and noise rejection. Extremely useful for set up of any MC cartridge. I used this one to determine best loading for a couple of different cartridges. Surprisingly good sound for the money.
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