Denon                            
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
DR-750
1977 2 35-18
0.045   65 B
Manual
No
Closed
2 12.5 1,400  
DR-350
1977 2 35-16
0.058   64 B
Manual
No
Open
  7.9 450  
DR-330/DR-F3*
1980 3 20-22
0.04   67 B
Manual
No
Open
  7.0 500 *Japanese model
DR-320/ DR-F2*
1980 3 20-22
0.04   67 B
No
No
Open
  7.0 425 *Japanese model
DR-240/DR-F1*
1980 2 25-19
0.04   65 B
No
No
Open
  7.0 350 *Japanese model
DR-F8
1982 3 20-22
0.025   73 B/C
Auto
No
Closed
  7.5 575  
DR-F7
1982 3 20-22
0.027   73 B/C
Auto
No
Closed
  7.5 500  
DR-F6
1982 3 20-22
0.027   73 B/C
No
No
Closed
  7.5 425  
DR-M4
1983 3 20-23
0.027   73 B/C
Auto
No
Closed
  6.0 595  
DR-M3
1983 3 20-23
0.027   73 B/C
Auto
No
Closed
  6.0 495  
DR-M2
1983 3 20-23
0.027   73 B/C
Manual
No
Closed
  6.0 395  
DR-M44
1984 3 30-18
0.035 56 75 B/C
Auto
No
Closed
  6.4 650  
DR-M33
1984 3 30-18
0.04 56 75 B/C
Manual
No
Closed
  5.7 500  
DR-M22
1984 3 30-17
0.045 56 75 B/C
Manual
No
Open
  5.6 420  
DR-M11
1984 2 30-16
0.045 56 75 B/C
Manual
No
Open
  5.6 320  
DR-M44HX
1985 3 25-20
0.035 56 75 B/C/H
Auto
No
Closed
  6.4 600  
DR-M33HX
1985 3 25-20
0.04 56 75 B/C/H
Manual
No
Closed
  5.7 500  
DR-M10
1985 2 35-17
0.05   72 B/C
Manual
No
Open
3 5.6 250  
DR-M30HX
1986 3 25-20
0.045   73 B/C/H
Manual
No
Open
  5.4 500  
DR-M20
1986 3 25-19
0.045   73 B/C
Manual
No
Open
  5.4 400  
DR-M15HX
1987                          
DR-M14HX
1987 2 25-18
0.045   72 B/C/H
Manual
Yes
Open
3 4.5 400  
DR-M12HX
1987 2 25-18
0.045   72 B/C
Manual
Yes
Open
  4.5 350  
DR-M10HX
1987 2 25-18
0.05   72 B/C/H
Manual
No
Open
3 5.6 280  
DR-M34HR
1988 3 25-20
0.045   75 B/C/H
Manual
No
Open
  5.6 500  
DR-M24HX
1988 3 25-20
0.045   73 B/C/H
Manual
No
Open
  5.4 450  
DRR-680
1989 2 20-19
0.06   74 B/C/H
Manual
Yes
Open
  4.2 350  
DRM-800
1989 3 20-20
0.038   75 B/C/H
Manual
No
Closed
  4.8 500  
DRM-700
1989 3 25-20
0.045   73 B/C/H
Manual
No
Open
3 4.8 400  
DRM-600
1989 2 20-20
0.055   74 B/C/H
Manual
No
Open
  4.1 350  
DRM-500
1989 2 25-18
0.055   74 B/C/H
Manual
No
Open
2 3.9 275  
DRS-810
1991 3 20-20
0.038   75 B/C/H
Manual
No
Closed
4 6.6 500 Horisontal tape transport
DRS-610
1991 2 25-18
0.055   74 B/C/H
Manual
No
Open
    300 Horisontal tape transport
DRR-780
1991 2 25-18
0.055   74 B/C/H
Manual
Yes
Open
2   400 Horisontal tape transport
DRM-710
1991 3 20-20
0.038   75 B/C/H
Manual
No
Closed
3   400  
DRM-510
1991 2 25-18
0.055   74 B/C/H
Manual
No
Open
2 5.4 250  
DRR-730
1992 2 20-19
0.055   74 B/C/H
Manual
Yes
Open
2   320  
DRS-640
1993 2 20-19
0.055   74 B/C/H
Manual
No
Open
2 5.1 300 Horisontal tape transport
DRM-740
1993 3 20-20
0.038   75 B/C/H
Manual
No
Closed
3 4.2 400  
DRM-540
1993 2 25-18
0.055   74 B/C/H
Manual
No
Open
2 5.4 300  
DN-720R
1993 2 25-19
0.055   74 B/C/H
Manual
No
Open
2 4.7 500 Professional, Pitch control
DN-730R
1993 2 25-19
0.055   74 B/C/H
No
No
Open
2 4.7 475 Professional, Pitch control
DRM-650S
1995 2 20-19
0.055   77 B/C/S/H
Manual
No
Open
2 5.0 300  
DRM-550
1995 2 20-19
0.055   74 B/C/H
Manual
No
Open
2 4.1 250  
DN-790R
1995 3 20-20
0.038   84 B/C/S/H
Manual
No
Closed
3 5.1 1,000 Professional, Balanced Input/Output, Pitch control
DRM-555
1999 2 20-17
0.08   74 B/C/H
Manual
Yes
Open
2 3.6 250 Quick auto reverse