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NAD's Most Advanced Tuner Ever
The NAD M4 Masters Series tuner is the most advanced tuner ever developed by NAD. Matching the style, build quality, and performance of the company's award-winning Masters Series components, the M4 performance is at the extreme upper limits of radio broadcast quality. With its highly sensitive FM / AM tuning section, the M4 extracts maximum sound quality from both bands.
Interference-Free Reception
The M4 offers the highest levels of interference-free reception on both the AM and FM band.
In the FM tuner section, a shielded multi-stage MOSFET RF features tuning in 0.0125 MHz steps for accurate tuning and the ability to compensate for multi-path contaminated signals. A crystal controlled synthesized phase lock loop with IF counter provides accurate VCO tuning, and a two stage loop filter for PLL output. In addition, the oscillator-to-synthesizer stage is buffered to keep spurious responses extremely well suppressed.
Excellent sensitivity combined with high overload margins result in good station-pulling power and clear reception, even in urban areas. Excellent selectivity and capture ratio allow clear reception of all stations on the crowded FM dial. The IF stage features three ceramic filter stages for low distortion and excellent channel separation. Sound quality is as excellent as you would expect from NAD, with a double tuned FM detector for low distortion and frequency response correction and MPX filter to give improved audio frequency response without sacrificing MPX rejection.
AM performance, while never able to achieve the low noise and distortion of FM broadcasting, is nevertheless highly sensitive with noise levels well suppressed. More importantly, it sounds open and dynamic.
The M4 also provides superior reception of Digital Audio Broadcasts on the DAB Band III, combining noise-free performance with an unprecedented selection of stations. Please note that the DAB format is not used by broadcasters in North America.
The Perfect Solution
The M4 is the perfect solution for adding radio to a Masters Series stereo or surround sound system. Auto tuning quickly locates all the stations available in your locale, and the station preset memory allows you to save your favorites for fast and easy recall. These can be accessed from the front panel or via the supplied IR remote control.
The clear two-line dot matrix display shows information about the broadcasts being received.
Additionally, an RS-232 port, IR input and 12V trigger allow the M4 to be fully integrated with advanced automated control systems.
Product Manual(1mb PDF)  | 
