Denon DR-F7 (outside only)

Specs
3 heads,
2 motor,
Full Logic,
wired remote ready,
3 digit counter,
Dolby B-C NR,
Fe 30-19000 Hz ± 3dB,
CrO2 30-20000 Hz ± 3dB,
Me 25-21000 Hz ± 3dB,
S/N >73dB (Dolby C),
W&F (wrms) 0,027%,
mm 434x117x320, kg 7,5.

Grundig CNF 350a (outside only)

 

Specs
2 heads,
2 motor,
4 digit counter/clock,
Dolby NR,
Fe 30-17000 Hz,
CrO2 30-17000 Hz,
Me 30-17000 Hz,
S/N 62 dB (Dolby),
W&F (wrms) 0,1%,
mm 540x160x320, kg 7,2.

Grundig CF 1700 (outside only)

 

Specs
2 heads,
2 motor,
Soft Touch,
3 digit counter,
Dolby NR,

mm 420x115x200, kg 2,9.
Similar: Sanyo RD 260 (with Dolby C).