M28 Seven Channel Power Amplifier

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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.

Brand : NAD

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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.

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
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)

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