Vintage Luxman 5C50 Realtime Processed Preamplifier Laboratory Reference Series DC Integrated Pre-Amplifier General:Manufacturer: LuxmanModel: Laboratory Reference 5C-50Type: DC Stereo PreamplifierYears of manufacture: 1976 - 1982Made in: JapanColor: SilverPower consumption: 15 WConnections:Number of inputs:Phono MM 1: 2.5 mV, 50kohm (adjustable from 30 - 100 kOhm).Phono MM 2: 2.5 mV, 50kohm (adjustable from 30 - 100 kOhm)Phono MC: Connection for external signal transformerTuner: 150 mV, 50kOhm Aux: 150 mV, 50kOhmTape 1: 150 mV, 50kOhmTape 1 DIN:Tape 2: 150 mV, 50kOhmNumber of outputs:Pre Out 1 & 2: 1V typical, 18V max, <0.005%, 500 ohms.Tape 1 Rec Out: 150mV, max. 18V, <0.005%, 500 OhmTape 1 DIN:Tape 2 Rec Out: 150mV, max. 18V, <0.005%, 500 Ohm Specifications:Frequency response:Phono: 20Hz - 20000 Hz, ±0.2dB.Tuner, AUX: 1Hz - 200000 Hz, 0.5dBDistortion factor:Phono MM 1 & 2, MC: <0.005%.Tuner, AUX1, 2: 0.005%Signal to noise ratio:Phono MM 1 & 2: 80dBPhono MC:Tuner, AUX: 100dBTape 1 & 2: 100dBVolume attenuator: adjustable from -40 dB to - 15 dBTone control: only controls from Sharp to BroadLoudness: noHigh Filter: switchable 12 kHz, Off, 18 kHzLow Filter (Subsonic): switchable 4 Hz, Off, 7 HzSpecial Features:DC preamplifier with function indicator lamp: White = normal operation, Red = DC offsetLinear Equalizer with control range from Up-Tilt to Down-TiltMono - Stereo - Reverse - SwitchVolume attenuator switchable: Preset (adjustable from -40 dB to - 15 dB), Off, Signal OffConnector for MC step-up transformer, slot on rear panelRemarks:The Luxman Laboratory Reference Series made its debut in 1976.Highlights were the first Real Time Processed DC amplifier and the first synthesizer tuner. Stackable components (the 4 device feet had corresponding recesses with the device standing underneath) Condition: Preowned…. Very clean like new unit. Tested and working. Has some very light age wear