NAD Master Series M25 7-channel power amp

$3,995.00 $1,495.00

If you have any questions, please call our store at 630-663-1298.




NAD Master Series M25 7-channel power amp is an exceptional sounding amplifier, using a solid Class A/B biased output stage powered by a massive linear power supply. This type of amplifier design is preferred by many critical listeners who find it has a purer and more musical sound compared to the more common Class D designs. This amp is also in excellent cosmetic condition.

To get the most out of the advanced soundtracks on most Blu-ray discs, you need serious power on every channel. The M25, at 160-watts times seven channels, is one of the most powerful home theater amplifiers built today. The M25 easily exceeds THX’s most stringent Ultra 2 certification requirements, guaranteeing first-rate performance.

The M25 contains seven individual mono block amplifiers, with each channel using a balanced junction FET input stage to eliminate cross-talk, resulting in exceptionally low levels of noise and distortion. NAD employs a unique electronic ground isolation circuit to prevent ground loop noise, a common problem with many complex multi-channel systems.

Intelligent features ensure clean, dynamic sound
NAD’s proprietary PowerDrive™ circuitry measures each channel’s dynamic impedance individually and computes the optimum power supply voltage required to drive the output stage for maximum power and efficiency. The M25 also incorporates NAD’s acclaimed switchable “Soft Clipping®” circuit, which gently transforms the audio waveform as the point of clipping distortion approaches to keep the sound clean and your speakers protected.

The M25 can deliver its full rated power continuously for hours on end. Custom designed heat sinks and variable-speed fans work to keep the M25 running cool under the most severe conditions. A unique circuit that tracks signal level actually shuts down the fans during quiet passages.

Quality in every detail
The M25 utilizes NAD’s proven Holmgren Toroidal transformer design to create a power supply that offers well regulated voltage, massive current and low noise. Multiple high-grade capacitors ensure a clean DC voltage supply for very low noise and explosive dynamics. Copper buss bars are used exclusively throughout for power delivery and grounding.

Buffered low-impedance level controls allow system fine tuning without the distortion typical of most level control circuits. Custom-designed, gold-plated speaker binding posts offer multiple connector options, while maintaining a large, corrosion-free, low-impedance contact area.

Product highlights:

  • 7-channel THX Ultra 2 Certified power amplifier
  • 160 watts per channel into 8 ohms (20-20 kHz at 0.03% THD)
  • NAD Soft Clipping™ technology
  • PowerDrive™ circuitry
  • each channel has individual over-current, DC, infrasonic and ultrasonic overload sensing and protection for complete reliability under even the most severe operating conditions
  • signal-to-noise ratio: 118 dB
  • one RCA input for each channel
  • 12-volt DC trigger input
  • massive Holmgren toroidal power transformer
  • gold-plated binding post speaker terminals
  • 1 switched AC outlet
  • detachable power cord
  • weight: 116 lbs.
  • 17-1/8″W x 8-3/8″H x 20-1/2″D