NAD has moved away from the old-fashioned power-hungry linear power supplies and Class AB output stages that waste nearly half of the energy consumed and produce heat rather than sound. Instead, NAD has developed even better performing circuits based on switch mode power supplies and Class D output stages. Once thought to be inferior to traditional topologies, this new Hybrid Digital Amplifier design is very linear over a wide bandwidth and provides consistent performance into all speaker loads, providing a dramatic advancement over previous Class AB and Class D amplifier designs.
Full Disclosure Power (FDP): NAD uses Full Disclosure Power (FDP), the most demanding criterion for performance measurement. FDP specifies distortion under the most extreme conditions of low impedance loads and frequency extremes, rather than the simple and easy 1kHz @ 8 Ohms test quoted by many of other manufactures. NAD uses this stricter performance criterion because it more closely matches the demands of real music and real loudspeakers. Maintaining specified distortion at 4/8 Ohms and at 20-20kHz is a much more difficult achievement. The benefit of NAD's Full Disclosure Power is the total elimination of audible distortion at any listening level. This provides pinpoint imaging and realism with music and movies alike.
Discrete Headphone Amplifier: The NAD C 328 incorporates a discrete headphone amplifier with low output impedance and very high output voltage capability, enough to drive even high impedance studio monitor headphones. Connecting a set of headphone to the C328's front-panel jack will mute the speaker outputs. Volume, tone, and balance controls still operate during headphone listening.
Binding Post Speaker Outputs: The speaker output terminals consist of four binding posts to connect a single pair of loudspeakers. The amplifier supports 4 Ohm to 8 Ohm speakers. These binding post terminals will accept bare wire (up to 10AWG) and banana plugs. You'll need to remove the plastic inserts within the binding-post terminals to connect banana plugs.
Ready for Streaming
With support for Bluetooth, you can instantly connect and listen to the music service of your choice, or wirelessly stream music and playlists stored directly on your smartphone, tablet or computer. You can control basic playback functions (such as Play/Pause, Previous/Next Track, and Volume Up/Down) from the included IR remote. You can only pair and connect one device at a time. Plus, with its high performance digital circuitry, Bluetooth streaming has never sounded as good as it does with the C 328.
Versatility in Spades: The line inputs of the C 328 can accommodate all kinds of analogue source components. It offers ideal input impedance attributes with linear, ultra-low noise buffer amplifiers to prevent any sonic degradation caused by improper loading of the source device. The C 328 also features a separate headphone amplifier with low output impedance and very high output voltage capability, enough in fact to drive even high impedance studio monitor headphones. The low impedance line outputs can also connect to a subwoofer to further extend the versatility of the C 328.
When it comes to Classic Stereo amplifiers, NAD has never been an also-ran brand. In fact they have redefined the market and other brands either became defunct or had to lift their game. With the C328, no feature has been overlooked. Low noise circuits, precise volume control action, and accurate channel balance are all key characteristics of the C 328. With the added bonus of proper input and output impedance traits, plus high overload margins and stability with difficult speaker loads, the C 328 is the best choice for music lovers who are just starting to build their dream systems and want something better than entry-level. The C 328 also includes a MM phono stage with precisely correct RIAA equalization, high overload margins, extremely low noise, and an innovative circuit to suppress infrasonic noise that is present on all LPs—all without affecting bass response.