📌LAB POINTS high quality phono pre-amp / phono stage designed by industry-leading manufacturer of audiophile-grade vinyl replicates Mobile Fidelity Sound Lab's wide bandwidth transparency for faithful sound reproduction compatible with MM (Moving Magnet) and MC (Moving Coil) cartridges switchable subsonic filter (eliminates potentially damaging, inaudible bass frequencies) switchable mono mode improves image stability and generates richer tone on mono recordings selectable gain and loading tailors sound to match your cartridge specs, accessible via bank of toggle switches on unit's underside external power supply "StudioPhono replicates the wide bandwidth transparency Mobile Fidelity Sound Lab mastering engineers demand. Tim De Paravicini, the designer responsible for the Mobile Fidelity Gain2™ Ultra Analog cutting system, assisted with the internal circuitry to ensure your analog system at home faithfully reproduces the music buried in the grooves of your LPs" - Mofi Electronics 🔑KEY FEATURES dual RCA inputs + outputs w/ grounding post gain: adjustable from 40dB - 66dB load impedance: 47,000 Ohms (MM) / 75, 100, 500, 1k, 10k, 47k Ohms (MC) input capacitance: 100pF THD: < .01% (MM) / < .012% (MC) dimensions: 3.75" x 6.3" x 1.25" / 95 x 160 x 32mm 📦COMES WITH external universal power supply