User manual NAD T955

[. . . ] 1 Read instructions - All the safety and operating instructions should be read before the product is operated. 2 Retain instructions - The safety and operating instructions should be retained for future reference. 3 Heed Warnings - All warnings on the product and in the operating instructions should be adhered to. 4 Follow Instructions - All operating and use instructions should be followed. [. . . ] In addition, the T955 will handle low impedance speakers with ease. the T955 incorporates NAD's unique Soft-Clipping circuitry in all five channels. Any amplifier can be overdriven if it is played too loud, exceeding the maximum output power. Under such circumstances, amplifiers produce extreme high levels of distortion which, besides sounding very unpleasant, can damage your loudspeakers. the Soft Clipping circuit suppresses such distortion and minimizes the risk of damage to speakers. This is particularly important with movie soundtracks which often contain very dynamic outbursts in which, unlike music, it is difficult to hear this potentially damaging distortion. The Soft Clipping LED on the front panel illuminates when the Soft Clipping circuit is engaged. Soft Clipping can be defeated with a rear panel switch. The 12V trigger connection on the back panel allows the amplifier to be switched from On to Stand-by and vice-versa remotely. This way, the T955 can be part of a system which can be turned on and off with a single command, easing operation. The 12V trigger also allows the amplifier to be installed in places not in easy reach. THE DESIGN The NAD T955 houses five individual amplifiers, each on separate circuit board. Each amplifier channel acts as a "mono block" within the chassis. each input connector , and set of loudspeaker output terminals , is directly connected to that channel's circuit board. This design eliminates extra wiring and keeps signal paths short. furthermore , this modular design increases reliability and thermal efficiency. The input circuit uses a totally new dual differential input topology that operates in true Class-A mode. The special HolmgrenTM toroidal transformer has less hum and magnetic leakage than conventional toroidal transformers, but retains the usual benefits of high efficiency and high power-to-weight ratio. This provides highly effective protection that does not effect audio performance. Each channel is protected against excess temperature, DC fault and loudspeaker short-circuit. The T955's inherently conservative, high-voltage/high-current output stage has been designed for years of trouble-free service. POWERDRIVE To meet the diverse requirements of high current drive and high dynamic power, our patented PowerDrive amplifier circuit will build further on our reputation for amazingly effective power. [. . . ] In the unlikely event a fuse may need to be replaced, unplug the line cord from the wall. Then remove all connections from the amplifier. Only replace the fuse with the same type, size, and specification. The Power LED located just above the power button and Protection LEDs (see Protection LED below) will light up. [. . . ]