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.
NAD M28 Seven Channel Power Amplifier
- 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 47 kΩ (Balanced)
Input Impedance (r and c) 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
