Marantz Model 3650 Preamp

Front View Image Attribution: Ben's own unit, via Casio QV-100b Date: 1999 Rear View EBay Auction #427058047 Image Attribution: Dave Douglas Date: September 5th, 2000 Box! EBay Auction #427058047 Image Attribution: Dave Douglas Date: September 5th, 2000 Manual! EBay Auction #513103792 Date: November 29th, 2000

General Rarity X-Rare Retail Price 500 Designed in USA Manufactured In Japan First Year 1978 Last Year 1979 Matching Preamplifiers n/a Matching Amplifiers 170DC,300DC Matching Integrated Amplifiers n/a Matching Tuners 2100,2110,2120,2130 Rack Mount Optional Ears Wood Case WC-136 Silver Face Yes, Extruded Channels Two Tube Design None Tube Count 0 IC Count 0 FET Count 16 Transistor Count 97 Diode Count 27 Speaker Connections Two Sets Chassis Ground Rear deck Binding Post AC Switch Yes Fusing 1 amp, rear deck buss Switched AC Outlets 2, 600 watts total Unswitched AC Outlets 2, 600 watts total Power Source Details Bipolar, single center tapped winding Power Consumption 29 watts Special Option 1 RHA1 Rack Mount Adaptors

Physical Width 16 1/2 Height 5 3/4 Depth 9 1/2 Weight 18.7 lbs, 23.1 lbs packed

Preamplifier THD 0.005% @ phono IMD 0.003% @ phono Multiple Bass Adjustments Sliders Multiple Midrange Adjustments Sliders Multiple Treble Adjustments Sliders Tone Control Defeat Yes Bass Turnover Options 100 Hz Treble Turnover Options 10 KHz High Filter 9 KHz, 18 dB/octave Low Filter 15 Hz, 18 dB / Octave Gain Control Calibrated Knob Loudness Contour Linear detented control Mono L,R,L+R Muting -20 dB Channel Reverse Yes Balance Slider Number of Tape Monitors Two, plus 3rd via dubbing jacks Tape to Tape Dubbing 1-2, 2-1, 3-1,3-2,1-3,2-3 Auxillary Input Source Yes Phono Input Source MM/MC 2nd Phono Input Source MM Phono Pickup Impedance Control Yes Cartridge Load R=1/10/27/47/100k, C=470/330/220/150/100pf Cartridge Type Selection MM/MC (phono 1 only, 2 is MM) Tuner Source Input Yes Tape Monitor Yes 2nd Tape monitor Yes Record Source Tape 1 2 to 1, aux, tuner, phono, direct Record Source Tape 2 1 to 2, aux, tuner, phono, direct Scope Output(s) Yes Tape Equalization Yes Headphone Jack(s) Yes Speaker Selection Nomenclature Main, Remote Hum and Noise 0.09 uV @ phono MC Signal to Noise Ratio 100 dB Channel Separation 56 dB Frequency Response 20Hz 20kHz +/- 0.1 dB, 5Hz to 100 KHz +/- 1.2 dB Rated Output Level 1.5 volts Maxiimum Output Level 5 volts Output Impedance 100 ohms