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Classic (1980 and Earlier) Marantz Gear
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Marantz Model 3650 Preamp

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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

EBay Auction #427058047
Image Attribution: Dave Douglas
Date: September 5th, 2000

EBay Auction #513103792
Date: November 29th, 2000

Retail Price500
Designed inUSA
Manufactured InJapan
First Year1978
Last Year1979
Matching Preamplifiersn/a
Matching Amplifiers170DC,300DC
Matching Integrated Amplifiersn/a
Matching Tuners2100,2110,2120,2130
Rack MountOptional Ears
Wood CaseWC-136
Silver FaceYes, Extruded
Tube DesignNone
Tube Count0
IC Count0
FET Count16
Transistor Count97
Diode Count27
Speaker ConnectionsTwo Sets
Chassis GroundRear deck Binding Post
AC SwitchYes
Fusing1 amp, rear deck buss
Switched AC Outlets2, 600 watts total
Unswitched AC Outlets2, 600 watts total
Power Source DetailsBipolar, single center tapped winding
Power Consumption29 watts
Special Option 1RHA1 Rack Mount Adaptors

Width16 1/2
Height5 3/4
Depth9 1/2
Weight18.7 lbs, 23.1 lbs packed

THD0.005% @ phono
IMD0.003% @ phono
Multiple Bass AdjustmentsSliders
Multiple Midrange AdjustmentsSliders
Multiple Treble AdjustmentsSliders
Tone Control DefeatYes
Bass Turnover Options100 Hz
Treble Turnover Options10 KHz
High Filter9 KHz, 18 dB/octave
Low Filter15 Hz, 18 dB / Octave
Gain ControlCalibrated Knob
Loudness ContourLinear detented control
Muting-20 dB
Channel ReverseYes
Number of Tape MonitorsTwo, plus 3rd via dubbing jacks
Tape to Tape Dubbing1-2, 2-1, 3-1,3-2,1-3,2-3
Auxillary Input SourceYes
Phono Input SourceMM/MC
2nd Phono Input SourceMM
Phono Pickup Impedance ControlYes
Cartridge LoadR=1/10/27/47/100k, C=470/330/220/150/100pf
Cartridge Type SelectionMM/MC (phono 1 only, 2 is MM)
Tuner Source InputYes
Tape MonitorYes
2nd Tape monitorYes
Record Source Tape 12 to 1, aux, tuner, phono, direct
Record Source Tape 21 to 2, aux, tuner, phono, direct
Scope Output(s)Yes
Tape EqualizationYes
Headphone Jack(s)Yes
Speaker Selection NomenclatureMain, Remote
Hum and Noise0.09 uV @ phono MC
Signal to Noise Ratio100 dB
Channel Separation56 dB
Frequency Response20Hz 20kHz +/- 0.1 dB, 5Hz to 100 KHz +/- 1.2 dB
Rated Output Level1.5 volts
Maxiimum Output Level5 volts
Output Impedance100 ohms

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