Specs:

NAD M28 | 7 Channel Power Amp

DIMENSIONS AND WEIGHT

• Gross dimensions WxHxD : 435 x 156 x 380 mm (17 3/16 x 6 3/16 x 15”)
  
• Shipping Weight: 21.2 kg (46.7 lbs)
  
  OVERALL SPECIFICATIONS
  
• FTC power, two channels= 220 W (ref. rated THD, 8 Ohms , 20 Hz – 20 kHz, two channels driven): = 400 W (ref. rated THD, 4 Ohms , 20 Hz – 20 kHz, 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 (250 mW to rated power, CCIF IMD, DIM 100): =0.003 % (ref. 20 Hz – 20 kHz)
  
• IHF dynamic power: 280 W 8 Ohms, (all channels driven), 560 W 4 Ohms, (one channel driven)
  
• Damping factor: 1.3 V (ref. rated power)
  
• Input impedance Input Impedance (r and c): 47 kΩ (Balanced): 23 kΩ (Single-ended), >118dB (ref. rated power)
  
• Damping Factor: >750dB (ref. 8 Ohms, 50Hz and 1kHz)
  
• Frequency Response: ±0.1dB (ref. 20Hz-20kHz), -2.5dB at 3Hz and 100kHz
  
• Input Impedance: 47 kilohm (Balanced)
  
• 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
  
• Time to go to Standby mode at no input signal: = 30 minutes
  
• Standby power: = 0.5W
  

Features:

Overview:

The Masters M28 Seven Channel Power Amplifier epitomises the ultimate in what is possible with today’s amplification techonology. It is one of the very first amplifiers to employ Purifi’s Eigentakt™ amplifier technology.

Rated conservatively at 200W per channel (8 ohms) and well over 320W dynamic power (8 ohms; all channels driven), the result is breath-taking, lifelike surround sound performance, be it from the latest action-packed film with tremendous dynamics or a subtle classical piece with delicate and detailed passages. The M28 can accept both balanced and single-ended inputs, and features high-quality binding posts for speaker connection. The compact dimensions of this highly energy-efficient design belie the massive amount of power available for the most demanding music and movies.

Review: