Pre Amplifiers Comparison
Model System Inputs Quadro Inp. Sensitivity High Level
(mV)
Inp. Impedance High Level
(kΩ)
Frequency Response High Level
(HZ)
Signal/Noise High Level
(db)
Inp. Sensitivity Phono MM
(mV)
Inp. Impedance Phono MM
(kΩ)
Inp. Sensitivity Phono 2
(mV)
Inp. Impedance Phono 2
(kΩ)
Frequency Response Phono MM Signal/Noise Phono MM
(db)
Inp. Sensitivity Phono MC
(mV)
Inp. Impedance Phono MC
(kΩ)
Signal/Noise Phono MC
(db)
Outputs Frequency Response
(HZ)
Harmonic Distortion
(% at rated output)
Output Voltage Rec Out
(mV)
Impedance Pre Out
(kΩ)
Output Voltage Pre Out
(mV)
Impedance Rec Out
(kΩ)
Tone Controls Frequencies Filters Loudness Dimensions in Inches
((w) x (h) x (d))
Dimensions in mm
((w) x (h) x (d))
Weight in lbs
(lbs)
Weight in Kg
(Kg)

Yamaha C-6
Transistor 3 Phono (MM I, MM II, MC), 1 Tape, 1 Tuner, 1 Aux no 150 47 N/A 102 2.5 47 2.5 47 RIAA 97 0.1 0.05 N/A N/A 10 - 100,000 0.002 N/A N/A N/A N/A Bass, Treble Bass 12dB/ 31.5 - 640 Hz, Treble 12dB/ 640 - 12,400 Hz N/A no 17.13 x 4.5 x 13.33 435 x 114.3 x 338.5 13.89 6.3
Yamaha C-4
Yamaha C-4
Transistor 2 Phono (MM, MC), 1 Tuner, 1 Tape, 1 Aux no 150 47 N/A 106 2.5 0.1 k Ω ( 33, 47, 68, 100 k Ω switchable) N/A N/A RIAA 97 0.1 0.05 N/A N/A 5 - 100,000 0.0035 N/A N/A N/A N/A Bass, Treble Bass 10dB/ 20 Hz, Treble 10dB/ 20,000 Hz N/A no 17.13 x 5.73 x 14.74 435 x 145.5 x 374.5 40.79 18.5

Yamaha C-2 A
Transistor Pre Amplifier Phono MM I+II; Phono MC; AUX I+II; Monitor I+II no 150 47 N/A 107 2.5 0.1 k Ω (47, 68, 100 k Ω switchable., 200 pF) 2.5 47 RIAA (0.2 dB) 104 0.1 0.05 104 2 PRE OUT; REC OUT 10-100,000 (+0/-0.2 dB) 0.0007 150 0.25 2,000 0.1 Bass; Treble Bass: 10 dB/ 20 Hz; Treble: 10 dB/ 50 kHz SUBSONIC no 17.31 x 2.83 x 12.6 435 x 72 x 320 17.42 7.9
Yamaha C-85
Yamaha C-85
Transistor Pre Amplifier 2 Phono (MM/MC); 2 Tape; Tuner; CD; Video no 150 47 20-20,000 106 (150 mV) 2.5 47 2.5 47 RIAA 0.2 dB 95 (0.5 mV) 0.1 1 91 (0.5 mV) 2 PRE OUT (normal/ invert); 2 REC OUT N/A 0.001 150 0.05 1,500 0.6 SUBSONIC; LOX; BAND; HIGH BAND LOW 12 dB/31.5-800 Hz; HIGH 12 dB/0.8-20 kHz SUBSONIC; LOW; HIGH 40 dB 17-1/8" x 3-3/4" x 14-15/16" 435 x 95 x 380 14.15 6.8

Yamaha C-50
Transistor Pre Amplifier Phono MM; Phono MC;Tuner; Tape I/AUX I;, Tape II/AUX II; no 150 47 N/A 96 (IHF) 2.5 47 kΩ (100/220/330 pF) ; 100 N/A N/A RIAA (0.2 dB) 81 (IHF) 1 0.1 80 (IHF) PRE OUT; 2 REC OUT (RCA); Phones N/A N/A 150 N/A N/A 0.47 Bass; Treble Bass: 10 dB; Treble: 10 dB N/A no 17.13 x 3.82 x 14.53 435 x 97 x 369 15 6.8

Yamaha C-70
Transistor Pre Amplifier Phono MM; Phono MC; Tuner; TapeI+II; AUX I+II no 150 47 47 N/A 2.5 47 kΩ 100/220/330 pF; 100 N/A N/A RIAA (0.2 dB) N/A 1 0.1 N/A PRE OUT; PRE OUT INVERT; 2 REC OUT; Phones 5-100,000 (+0/-0.5 dB) N/A 150 47 1.5 0.47 Bass; Treble Bass: 12 dB; Treble: 12 dB SUBSONIC 15 Hz; HIGH no 17.13 x 3.82 x 14.53 435 x 97 x 369 15.87 7.2