Technics RS-615US

Specs
2 heads (R/P: Super Permalloy, E: Ferrite),
1 DC motor (electronic speed control),
  3 digit linear counter,
Dolby NR,

L+R mic in,

timer,

Panasonic CE components,

No 30-14000 Hz,

CrO2 30-15000 Hz,
S/N 50 dB (Dolby off), 63 dB (Dolby on),

W&F 0,1% (wrms),

mm 410x140x305, kg 6,3.

Audiolab M-DAC

Specs

  1 dac 32bit/84MHz conversion,

ESS 9018S (Sabre32) dac,

7 digital filter, 

TI N5532, NE5534 op amps,

Lelon, Evox, Wima components,

2 24bit/192kHz coax in,

2 24bit/96kHz opt in,

1 24bit/96kHz usb in,

1 rca / 1 xlr analog out,

1 coax / 1 opt out,

phone out,

L/R digital level meter,

pre / dac mode,

remote,

external power supply,
dynamic range > 115 dB (rca), > 122 dB (xlr),

20–20000 Hz ± 0,2 dB,
thd < 0,002% (rca), < 0,0008% (xlr),
mm 250x59x252, kg 4,95.

Sony TC-K750ES

Specs
3 heads (R: Permalloy, P: Permalloy, E: S & F head),
2 DC motor (1 capstan quartz DD linear torque BSL motor, 1 reel motor),
full logic,
Sony RM-J701 remote (optional),
4 digit counter,
Dolby B-C NR HX Pro, mpx,

motorized tape loading,

cassette stabilizer,

Nichicon Muse, Panasonic SU, Nippon Chemicon SME components,

No 20-17000 Hz ±3 dB (din),

CrO2 20-19000 Hz ±3 dB (din),
Me 20-21000 Hz ±3 dB (din),
S/N 57 dB (Dolby off), 66 dB (Dolby B), 72 dB (Dolby C),

W&F 0,07% (wrms),

mm 430x135x350, kg 6,9.