NAD 304 User manual

304 Stereo Integrated Amplifier
Date of manufacture : Mar 93 - Oct 96
Please note that this document contains the text from the original product brochure, and some technical statements may now be out of date
The 304 essentially extends the 302 with power increased to 35 watts per channel into 8 ohms and
generous headroom permitting untroubled peaks of 120 watts per channel.
NAD’s unique Soft Clipping and Extended Dynamic Power circuits give the 304 the ability to deliver the
maximum impact for dramatic performances without loss of smoothness or clarity. Two sets of heavy
duty binding posts can be used for main plus extra speakers or for bi-wiring, adding to the 304’s
versatility. Its six inputs for audio and video components, provides an amplifier ideal for the most
sophisticated audio and AV systems.

PRE-AMP SECTION
Phono input
Input impedance (R and C) 47kΩ/ 200pF
Input sensitivity, 1kHz MM 2.5mV ref. 0.5V
Signal/Noise ratio (A-weighted with cartridge connected) MM 77dB ref. 5mV
THD (20Hz - 20kHz) <0.1%
RIAA response accuracy (20Hz - 20kHz) ±0.5dB
Line level inputs
Input impedance (R and C) 20kΩ/ 500pF
Input sensitivity (ref. 1W) 165mV
Maximum input signal >10V
Signal/Noise ratio (A-weighted ref 1W) 91dB
Frequency response (20Hz - 20kHz) ±0.5dB
Line level outputs
Output impedance Pre-amp 220Ω
Tape Source Z + 2kΩ
Phones 220Ω
Maximum output level Pre-amp >12V
Tape >10V
Phones >10V into 600Ω
>500mV into 8Ω
Tone controls
Treble ±7dB at 10kHz
Bass ±10dB at 50Hz
POWER AMP SECTION
Continuous output power into 8Ω* 35W (17dBW)
Rated distortion (THD 20Hz - 20kHz) 0.03%
Clipping power (maximum continuous power per channel) 42W
IHF Dynamic headroom at 8Ω+5.5dB
IHF dynamic power (maximum short term power per channel) 8Ω120W (21dBW)
4Ω160W (23dBW)
2Ω200W (23dBW)
Damping factor (ref. 8Ω, 50Hz) >100
Input impedance 18kΩ/ 560pF
Input sensitivity (for rated power into 8Ω)1V
Frequency response (20Hz - 20kHz) +0.3dB
Signal/noise ratio ref. 1W 102dB
ref. rated power 117dB
THD (20Hz - 20kHz) <0.03%
Remote No
NAD Link No
PHYSICAL SPECIFICATIONS
Dimensions (W x H x D) 420 x 108 x 320mm
Net weight 6.4kg
Shipping weight 7.8kg
* Minimum power per chnnel, 20Hz - 20kHz, both channels driven with no more than rated distiortion.
Dimensions are of unit’s cabinet without attached feet; add up to 18mm for total height.
Dimension depth excludes terminals, sockets, controls and buttons.
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