SKU: 27254125173

NAD M28 Seven Channel Power Amplifier

$3599.55 $3999.50
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Description

NAD M28 Seven Channel Power AmplifierNAD M28 Seven Channel Power Amplifier Completely immerse yourself in the moment with Purifi. Purifi Hybrid Digital Amplification NAD M28 Seven Channel Power Amplifier uses Eigentakt amplifier technology, manufactured by NAD in license from Purifi. This new technology, which NAD was the first to embrace for the M33 Masters Series Streaming Amplifier, adds another level of precision by taking into account previously unknown effects of the output filter

NAD M28 Seven Channel Power Amplifier

Completely immerse yourself in the moment with Purifi™.

Purifi Hybrid Digital Amplification

NAD M28 Seven Channel Power Amplifier uses Eigentakt™ amplifier technology, manufactured by NAD in license from Purifi. This new technology, which NAD was the first to embrace for the M33 Masters Series Streaming Amplifier, adds another level of precision by taking into account previously unknown effects of the output filter in the feedback loop and further refinement of the self-oscillating Class D technology as used by previous NAD Hybrid Digital designs. The result is a performance level that approaches the theoretical limit in measured performance, be it at whispering levels or at full power.

In common with the previous generations of NAD Hybrid Digital technology but unlike most class D amplifier designs, the M28 is impervious to the loudspeaker load it is presented with, maintaining the same wide and even bandwidth response irrespective of the speaker’s impedance and at the same time providing high current capability. The continuous 200W into 8 ohms on tap for all channels driven at the same time and 700W dynamic power into 4 ohms is testament to this.

Inherent to the Eigentakt™ technology is its very analogue-like behaviour in the unlikely event the amplifier is driven into clipping. Whereas many class D designs can become unstable, Eigentakt™ behaves in a way similar to the benign way of clipping with instant recovery of well executed traditional class A/B amplifiers.

The sonic character of the M28 only reinforces the story told by the numbers. This is an amazingly powerful and transparent amplifier bringing new levels of refinement and dynamics at any level.

Fully Balanced Audio

The same efficient audio interface used by studios provides the highest level of signal integrity with the lowest noise floor.

Locking connectors and special interface electronics allow long cable runs without noise pickup or signal loss. All you get is awesome sound without the possibility of noise pickup or interference.

Effortless Power

As our most powerful amplifier ever, the M28 can pump out over 700W into difficult loads to follow complex dynamic peaks in your movies and music. Everything from rim shots to asteroid explosions sound remarkably real and immersive.

The M28 has power reserves to meet the demands of the latest high-resolution digital soundtracks. Thanks to the advanced Purifi Eigentakt™ amplifier technology, all this monster power comes at a lot less cost than traditional technology and delivers more power and performance!

 

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)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 27254125173

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4.7 ★★★★★
Based on 29 reviews
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A
Verified Purchase
Angie
Battle Creek, US
★★★★★ 5
Short lasting. But lots of fun while it lasted
Color: Blue
My dog loved it. Lasted 10 minutes, it constantly broke open. Could not be repaired. Not a happy camper! Don’t
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
T
Verified Purchase
Tamar G.
Lexington, US
★★★★★ 1
Broke easily
Color: Blue
Not for agressive chewers
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
S
Some Guy
Battle Creek, US
★★★★★ 4
Durable But Quirky Interactive Ball
Color: Blue
I am 30 now and my tolerance for toys that break in 2 minutes is basically zero. I picked this up during a weekend DIY project when I was fixing the deck and needed something to keep the dog occupied. The E TPU material is straight up impressiveuch abuse it can take from a large breed. My dog tends to destroy generic store brand balls but this one survived being dropped down the stairs and tossed against the siding. It is comfortable enough to use daily without feeling like it is going to shatter or hurt the dog. The internal compartment where you charge it is smart and those little pockets for the charging port are actually useful sized for my fat fingers. The smart movement is a game changer for keeping a high energy dog moving when I am busy with home improvement tasks. I was slightly worried about the 8 hour battery life but it holds a charge well enough for a few play sessions. My whole household uses this now to entertain the dog as he will not leave us alone otherwise. It works best on my kitchen tiles but it barely moves on the thick rug in the living room which is frustrating. The vibration is loud enough to be annoying when I am trying to focus on work. It is a solid 3 star product as it does what it says but has some quirks that make it less than perfect. Spending 19.99 is fair for the durability you get compared to cheaper options. I like that it is USB rechargeable instead of eating through batteries. It is not perfect but it serves a purpose in my chaotic house.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 28, 2026
F
Frank Paprota
Natrona Heights, US
★★★★★ 5
Engaging and Durable: High-Energy Play with a Caveat for Sensitive Pups
Color: Blue, Color: Blue
Finding an automated toy that can survive the jaws of an aggressive chewer while keeping them physically engaged is a major win for busy pet owners. This smart interactive dog toy offers an excellent, high-tech way to keep high-energy dogs active, though its enthusiastic movement might be a bit intense for more timid pets. Dynamic and Instinct-Triggering Movement: The core appeal of this toy is its smart interactive movement. This automatic bouncing ball activates immediately upon touch, rolling and bouncing in entirely unpredictable directions. This erratic motion successfully triggers a dog's natural chasing instincts, keeping them thoroughly engaged and entertained for hours, which is incredibly helpful when you are unavailable to play. However, because the movement is so sudden and dynamic, it can occasionally scare more sensitive or easily startled dogs. Chew-Proof and Safe Construction: The durability and structural safety of the ball are highly impressive: *Chew-Proof E-TPU: Crafted with a high-density E-TPU shell, the toy is specifically built to withstand aggressive chewing and rough play from medium to large breeds. It holds up remarkably well against scratches and deep bites for long-lasting use. *Pet-Friendly Materials: The non-toxic, BPA-free material is completely safe and remains gentle on your dog's teeth and gums during fetch or heavy chewing sessions. *Injure-Free Design: The toy is engineered with smooth, rounded edges to prevent any accidental cuts or injuries during high-speed play. Supporting an Active Lifestyle: This toy serves as a fantastic tool for supporting an active lifestyle. It encourages vital daily exercise to help maintain your dog's physical health, significantly reduces boredom, and curbs destructive behaviors like furniture chewing. This makes it an absolute lifesaver for high-energy pups that need a constant physical outlet. Convenient USB Rechargeability: Powering the toy is simple and environmentally friendly. It is equipped with a USB rechargeable battery that delivers up to 8 hours of continuous play on a single charge. It also includes the necessary USB charging cable, ensuring you can quickly plug it in and have it ready for the next play session without constantly buying disposable batteries. Bottom Line: I highly recommend this smart interactive dog toy for owners of high-energy, medium-to-large breeds that need an indestructible, engaging outlet. While it may frighten more timid or anxious dogs due to its unpredictable bouncing, its premium E-TPU durability, great battery life, and excellent exercise value make it a fantastic investment for a healthier, happier pet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
S
Silverbullet875
Natrona Heights, US
★★★★★ 5
Ymswznwe Smart Interactive Dog Toy, Pet Automatic Moving Bouncing Ball, Chew-Proof
Color: Blue, Color: Blue
This toy has been so much fun to watch my dogs interact with. I love the randomness of the movements because it keeps them guessing and keeps the toy interesting instead of becoming predictable after five minutes. They definitely weren’t sure what to think of it at first, but once they figured it out, it became hilarious entertainment. One of my dogs especially likes to hold it in his mouth and just let it vibrate, which cracks me up every time. I think toys like this are great not only for physical activity, but also for mental stimulation and curiosity. It gets them engaged in a different way than a regular ball or chew toy. While I wouldn’t consider my dogs “power chewers,” toys usually do not last long around here, so I was pleasantly surprised by how well this has held up. At the time of this review, it still looks basically brand new, so it is pretty durable. I also really appreciate that it’s rechargeable. I’m glad I’m not constantly going through batteries with a toy like this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026

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