Check the listing for details. Art Precision Phono Preamp. Color: see description, Condition: New. Listed at 125.03 USD. Equipped with a switch for MM/MC, you can optimally adapt the device to your pickup system. In MC mode, the input impedance can be set to 25 Ω or 100 Ω - ideal for minimizing resonance or microphone problems. A switchable low-cut filter removes unwanted hum or rumble frequencies without affecting the musical character. The variable gain control allows you to fine-tune the gain, supported by a signal/clip indicator that gives you visual feedback about your signal. The outputs are finished with gold-plated RCA connectors to ensure corrosion-free connections and have an output impedance of 100 Ω, so your signal is passed on cleanly and clearly. Thanks to its analog design, the phono preamp operates quietly and delivers transparent sound - with THD values below 0.001% under typical use. The.