Transducer : Erodion < Erodion 2
For this reason an MC step-up transformer should only be used with MC cartridges within the limited impedance range it has been designed for. Significant deviation from the specified range will result in a different impedance ratio, and also an altered perceived frequency balance.

A unique grounding switch allows selection between floating ground or chassis ground connection. Since all step-up transformers are affected by the general grounding conditions of the turntable/tonearm preceding it, and also the preamplifier following it, the positioning of the switch and also creative thinking regarding external grounding wires, will affect the sonic result. The owner's manual accompanying the Erodion explains how to work through the entire chain of an analog system in order to optimize grounding. Where possible Lyra recommends the use of "floating ground" since this should give the most rewarding sonic result.
LYRA still recommends recommends that wherever possible the connection of Lyra MC cartridges should be directly to high-quality, high-sensitivity RIAA preamplifier inputs capable of amplifying a 0.2 - 0.6mV MC signal without adding extra noise. However, some preamplifiers with an MM level RIAA stage may not be capable of this task, but otherwise sound wonderful. The combination of a step-up transformer mated to an MM-level RIAA input can also create a sound with a feeling of great energy and solidity, which can be extremely enjoyable. The Erodion was intended to enable high-quality MM-level RIAA stages to be used with low-impedance MC cartridges, but was also designed to sound as open and transparent as possible. We believe the Erodion fills the need for a high-performance MC transformer which should please the most discerning analog connoisseur.