NAD M4 Analogue Digital Tuner

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PERFORMANCE

Whether listening to an analogue broadcast on the FM or AM bands, or a digital broadcast, the M4 offers the highest levels of interference free reception. 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. The M4 features a crystal controlled synthesized phase lock loop with IF counter for 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 often crowded FM dial. The IF stage features three ceramic filter stages for low distortion and excellent channel separation. Sound quality is not overlooked, 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 never-the-less highly sensitive with noise levels well suppressed. More importantly, it sounds open and dynamic.

Digital Audio Broadcast combines noise-free performance with an unprecedented selection of stations. Since DAB uses audio compression (MP2) to maximize station selection, it is critical that the decoding and conversion to analog be as accurate as possible. Operating at a 48kHz sampling rate and 24 bit word length, DAB broadcasts have low distortion and wide dynamic range. The M4 excels at extracting the maximum sound quality from digital broadcast using premium quality devices and advance circuit design in the digital and analogue stage.

SIMPLICITY

By combining all broadcast formats in one elegant component the M4 is the perfect way to add radio to a Masters Series stereo or surround sound system. Auto tuning finds all the stations available in your locale and the station preset memory allows you to save your favourites for fast and easy recall. These can be accessed from the front panel or via the supplied IR remote control. Additionally, an RS-232 port, IR input and 12V trigger allow the M4 to be fully integrated with advanced automated control systems.

The clear two line dot matrix display shows information about the broadcasts being received, which may include station ID and song and artist information.

VALUE

Compared with other tuners of similar performance and capability the M4 stands apart for its superb style, build quality and affordable price.

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