Dual                            
Model (see top page for legend)
Year
Heads
F.R.,
±3dB, Hz-kHz
W&F, WRMS,
%
S/N, NR
off, dB
S/N, Best NR,
dB
NR & Bias
Rec. Cal.
Auto
Reverse
Drive
Motors
Weight, kg
Price, MSRP,
USD
Notes
C901
1974 3 20-15,5
0.07 51 60 B
Manual
Yes
Open
1 7.0 450 2 erase heads
C939
1976 3 20-17
0.04 60 69 B/FM
Manual
Yes
Open
  6.9 580 2 erase heads
C919
1976 2 20-17
0.04 60 69 B/FM
Manual
No
Open
  6.5 450  
C819
1978 2 20-17
0.05 59 67 B
No
No
Open
2 9.1 430  
C809
1978 2 20-17
0.06 57 65 B
No
No
Open
2 8.2 300  
C839RC
1979 3 20-20
0.03 60 69 B
No
Yes
Closed
2 10.0 875 2 erase heads, Pitch control
C830
1979 3 20-20
0.035 60 69 B
No
No
Open
2 10.0 500  
C820
1979 2 20-19
0.04 59 67 B
No
No
Open
2 7.8 420  
C810
1979 2 20-17
0.045 59 67 B
No
No
Open
2 7.9 330  
C812
1980 2 20-19
0.04 59 67 B
No
No
Open
2 10.0 300  
C844
1981 3 20-20
0.025 60 82 B/C
No
No
Closed
2 10.0 700 Two speeds
C828
1981 3 20-19
0.04 60 69 B
No
Yes
Open
2 9.1 500 2 erase heads
C822
1981 2 20-19
0.04 59 67 B
No
No
Open
2 7.9 375  
C814
1981 2 20-18
0.045 57 66 B
No
No
Open
2 7.9 300  
C818
1985 2 25-18
0.045 60 74 B/C
Auto
Yes
Open
2 6.8 300  
CC5050
1987 3 25-17
0.06 60 76 B/C
Auto
No
Open
2   400  
CC5850RC
1989 3 25-19
0.05 60 76 B/C/H
Auto
Yes
Open
2 6.4 505  
CC8050
1990 3         B/C/H
Auto
No
Open
2      
CC8040
1990 2         B/C
Auto
No
Open
2      
CC8065RC
1992 3 25-15
0.06 60 75 B/C/H
Auto
Yes
Open
2 5.4 440