ENGLISHFRANÇAISDEUTSCHESPAÑOLITALIANOPORTUGUÊSSVENSKA7ABOUT THE S170iThough the S170i A/V preamp is among the most powerful and sophisticated digital-surrounddecoder/processors available, we worked hard to make it one of the most musically transparent home-theater components as well; this is what we mean by NAD’s “Music First” design philosophy. Here arejust a few examples:• The S170i employs the latest, most sonically pure high-performance FET components throughout itsanalog audio circuits• Exceedingly low output impedance from all channels (long an NAD hallmark) eliminates sonic impactfrom cables and amplifier input-impedances• Output muting is via reliable, sonically transparent gold-contact relays rather than sound-coloringelectronics• Gold-surfaced connectors are employed throughout both internally and externally to ensureunimpeded signal transfer.E.A.R.S.A key element of the S170i’s unique musicality is NAD’s proprietary Enhanced Ambience Recovery System(EARS). In sharp contrast to many “ambience-synthesis” music-surround modes, EARS exploits the S170i’ssubstantial DSP power to route the ambient content that is “encrypted” in virtually all natural-acousticrecordings to the appropriate main, center and surround speakers, without resorting to artificiallygenerated reflections or regeneration. EARS’ natural ambience yields a subtle but extraordinarily effectivesurround mode that naturally enhances the spatial presentation in a fashion suitable for serious musiclistening.On the digital side, the S170i combines ultra-high-speed DSP processing employing one of the mostadvanced high-speed DSP “engines” available, with fully 24-bit, 96 kHz-sampling-capable D/A convertersfor all channels. A single, high-precision master clock runs all digital circuits to eliminate the timing errors(“jitter”) that otherwise occur between digital stages, compromising sonics. The result is legitimately state-of-the-art surround decoding from Dolby Digital and DTS sources in both 5.1-channel and 6.1-channel/7.1-output modes, and genuinely superior sound quality in all modes.ABOUT THXThe S170i preamplifier is certified by THX Ltd as meeting the rigorous requirements of its homeTHX/Ultra 2 program for surround controllers. This means that it is capable of delivering an audioexperience equal to that of the finest commercial cinemas when its superb fundamental performance iscombined with the surround enhancements mandated by the THX/Ultra 2 program.EASE OF USEWe invested no less effort in making the S170i powerfully easy to use than that expended in making itssonic performance second to none. Its design is unusually simple for so sophisticated a component, andthe HTR 2 remote controller is uniquely self-prompting and intuitive to use, as are the S170i’s own front-panel and on-screen displays. A powerfully simple system of presets will permit you to fine-tune yourlistening setup for different conditions, and recall these multiple parameters with two key pressesINTEGRATIONThe S170i preamplifier offers extensive, flexible system-integration options through its three configurableDC triggers outputs, as well as via NAD’s proprietary NAD Link inter-component communications protocol.Additionally, an RS-232 serial port stands ready to integrate the preamp with still more sophisticatedcontrollers such as touch-screen systems and whole-house automation installations.