NAD M28 - Reference and Specifications; Product Technical Specifications

ENGLISH
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All specs are measured according to IHF 202 CEA 490-AR-2008 standard. THD is measured using AP AUX 0025 passive lter and AES 17 active lter.
OVERALL SPECIFICATION
FTC power, two channels ≥ 220 W (ref. rated THD, 8 ohms, 1kHz, two channels driven)
≥ 400 W (ref. rated THD, 4 ohms, 1kHz, two channels driven)
Rated power, all channels ≥ 200 W (ref. rated THD, 8 ohms, 20 Hz - 20 kHz, all channels driven)
≥ 340 W (ref. rated THD, 4 ohms, 20 Hz - 20 kHz, all channels driven)
Rated THD (CCIF IMD, DIM 100) ≤ 0.003 % (ref. 20 Hz - 20 kHz, 250 mW to rated power)
≤ 0.0005 % (ref. 20 Hz - 20 kHz, 1/2 rated power)
IHF dynamic power 280 W (8 ohms, all channels driven)
560 W (4 ohms, 2 channel driven)
500 W (2 ohms, 2 channel driven)
Damping factor > 750 (ref. 8 ohms, 50 Hz and 1 kHz)
Input sensitivity 1.3 V (ref. rated power)
Input impedance 47 kohms (Balanced)
23 kohms (Single-ended)
Signal/noise ratio > 102dB (A-weighted ref. 1W, Balanced)
> 97 dB (A-weighted ref. 1W, Single-ended)
> 124 dB (A-weighted ref. rated power, Balanced)
> 120 dB (A-weighted ref. rated power, Single-ended)
Frequency response ± 0.1 dB (ref. 20 Hz - 20 kHz)
- 3 dB at 3 Hz to 60 kHz
Voltage gain 29.5 dB ±0.3 dB
Time to go to Standby mode at no input signal ≤ 30 minutes
Standby power ≤ 0.5W
DIMENSION AND WEIGHT
Gross dimension (W x H x D)* 435 x 156 x 380 mm
17 ⁄ x 6 ⁄ x 15 inches
Shipping weight 21.2 kg (46.7 lbs)
* - Gross dimension includes extended rear panel terminals and installed feet
Specifications are subject to change without notice. Check out www.NADelectronics.com for updated documentation or latest information about M28.
REFERENCE
SPECIFICATIONS