Beautiful powerful Marantz PM15S2 Amplifier. One of the latest models with lots and lots of power! Build as a tank and sounds like .... Comes with the original manual. Marantz PM15S2 Specs Power Output: (8 / 4 Ohm RMS) 90 W / 140 W Frequency Response: 5 Hz–100kHz Total Harmonic Distortion: 0.05 % Damping Factor: 100 Input Sensitivity: MM 2.7 mV / 47 kohm Input Sensitivity: MC 270 μV / 100 ohm Marantz PM15S2 Features Clean, Seamless Construction No Visible Screw Heads Marantz HDAM-SA3 (Hyper Dynamic Amplifier Module) Digitally Controlled Analog Volume Control CD Direct Input Buffer Circuit w/ HDAM-SA2 Current Feedback Power Amplifier w/ Servo Shielded Torroidal Transformer New Power Supply w/40,000uF Filter Capacitance Power Amp Direct Input Preamp Output LCD Display Double Layered Bottom Plate Custom Aluminum Feet IR Remote w/ Aluminum Face F.C.B.S. (Floating Control Bus System) Complete Bi-amp Option Multi-Channel System Option Bi-Amp Mode Option Speaker load impedance: 4Ω (minimum) Dimensions: 440 x 123 x 444mm Weight: 18kg