SPL Pro-Fi Phonos black, Preamplifier, For record players with Moving Magnetic (MM) and Moving Coil (MC) pickup systems, RIAA equalization built according to Doug Self, Max. Amplification: 51 dB (MM), 70 dB (MC), Switchable gain: Normal, -10 dB, +4 dB, Output impedance: <5 Ohm, Response: -80 dB (at 1 kHz), Linear power supply with ring core transformer, Front and cover in aluminum, Housing made of powdered steel, Mains voltage (switchable): 230 V AC / 50 Hz or 115 V AC / 60 Hz, Dimensions (W x H x D): 278 x 57 x 330 mm, Weight: 3.2 kg, Colour: Black