📌LAB POINTS high quality phono preamp for MM (Moving Magnet) or high output MC (Moving Coil) cartridges selectable cartridge load capacitance allows subtle sound optimization for your MM cartridge ultra quiet operation rotary trim/gain control on front side + rumble filter for cutting very low frequencies (below 20 Hz) high grade headphone amp w/ independent rear headphone/line output (3.5mm) gold-plated RCA inputs and outputs, and grounding connection metal casing w/ vibration damping feet made in the USA "The music hall mini plus phono pre-amp is a perfect solution for attaching a turntable to today's audio equipment. It's a low-noise, high quality phono pre-amp designed to work with moving-magnet and high-output moving-coil cartridges. The chassis helps ward off the effects of stray magnetic fields and provides a safe quiet environment for the sensitive electronics it houses thus providing you with the best sound possible from your turntable." - Music Hall 🔑KEY FEATURES input: RCA + 1/8" TRS stereo gain: 41.51 dB gain @ 1kHz at 0 setting / 31.64 dB gain @ -10 setting / 45.66 dB gain @ +4 setting input Impedance: 47k output impedance: 32 ohms headphone / 470 ohms RCA frequency response: 3Hz to 36kHz THD: .005% @ 1KHz dimensions: 5.5"w x 3.5"d x 1.25"h / 140 x 89 x 32mm weight: 2 lbs / 0.9g 📦COMES WITH power supply