NAD 7400 Specification Sheet Download Page 2

PRE-AMP SECTION

Phono input

Input impedance 

(R and C)

MM

47k

/ 120pF

MC

47k

/ 120pF

Input sensitivity, 1kHz

MM

0.28mV ref. 1W

MC

0.02mV ref. 1W

Signal/Noise ratio 

(A-weighted with cartridge connected)

MM

76dB ref. 5mV

MC

76dB ref. 5mV

THD 

(20Hz - 20kHz)

<0.04%

RIAA response accuracy 

(20Hz - 20kHz)

±0.5dB

Line level inputs

Input impedance 

(R and C)

50k

/ 250pF

Input sensitivity 

(ref. 1W)

15mV

Maximum input signal

>10V

Signal/Noise ratio 

(A-weighted ref 1W)

96dB

Frequency response 

(20Hz - 20kHz)

±0.3dB

Line level outputs

Output impedance

Pre-amp

600

Tape

Source Z + 1k

Maximum output level

>10V

Tone controls

Treble

±12dB at 3, 6 or 12kHz

Bass

±12dB at 50, 120 or 250Hz

Bass EQ

+3dB at 60Hz
+6dB at 36Hz

Infrasonic filter 

(Switchable)

-3dB at 12Hz, 12dB / octave

POWER AMP SECTION

Continuous output power into 8

*

100W (20dBW)

Rated distortion 

(THD 20Hz - 20kHz)

0.03%

Clipping power 

(maximum continuous power per channel)

130W

IHF Dynamic headroom at 8

+5.7dB

IHF dynamic power 

(maximum short term power per channel)

8

370W (25.7dBW)

4

400W (26dBW)

2

440W (26.4dBW)

Damping factor 

(ref. 8

, 50Hz)

>100

Input impedance

20k

/ 600pF

Input sensitivity 

(for rated power into 8

)

1V

Frequency response

3Hz - 0, -3dB

Signal/noise ratio

ref. 1W

98dB

ref. rated power

118dB

THD 

(20Hz - 20kHz)

<0.03%

Bridged Mode

Continuous output power into 8

*

200W (23dBW)

IHF Dynamic headroom at 8

+6dB

IHF dynamic power 

(maximum short term power per channel)

8

800W (29dBW)

4

880W (29.4dBW)

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