NAD T-Series Amps

NAD unveiled two new power amplifiers, the T 975 Seven Channel Amplifier and the T 955 Five Channel Amplifier during the CEDIA 2006 Expo.Both amplifiers employ monoblock construction and incorporate NAD's proprietary PowerDrive circuitry. The T 975 provides 140wpc of continuous power to its seven (7) channels while the T 955 delivers 100wpc to five (5) channels (NAD claims these ratings are continuous power with all channels driven, 20Hz to 20kHz, at 0.08% THD at 8 and 4 ohms).

The T975 and the T955 benefit from NAD's proprietary PowerDrive topology which automatically senses a loudspeaker's impedance characteristics and adjusts its power supply settings to best cope with that specific load. The result is an amplifier with high dynamic power and low impedance drive capability.

The T975 uses a unique variable speed fan cooling system that was first introduced on the M25 Masters Series amplifier. This allows the T975 to deliver massive amounts of power for hours on end. Many amps thermally protect and cycle the internal fan on and off. While a well-designed forced air system can eliminate thermal cycling, it is also crucial to keep the noise of the cooling fan from being heard - especially during quiet passages of the movie or music. To this end, NAD has developed a unique circuit that measures not only the temperature of the heat sinks, but also the level of the input signal to ensure that the fan is silent during quiet passages.

Each element of the individual channel circuitry in the T975 and the T955, save the power supply, is fully independent, eliminating inter-channel influences. Active ground isolation further eliminates any possibility of inter-channel interference. The power supply used in both amplifiers was carefully designed using NAD's exclusive "Holmgren" transformer with a special core and materials to enhance efficiency, making the transformer less sensitive to DC offsets on the AC mains voltage. Each channel has individual over current, DC, infrasonic and ultrasonic overload sensing and protection for complete reliability under even the most severe operating conditions.

Individual gain adjustments for each channel is found on the rear panel of both amplifiers and promotes easy, accurate system configuration, as does the integral 12V trigger turn-on response. Ruggedness and in-system reliability are critical to successful custom-installed systems so both the T975 and the T955 utilize a combination of fuse and electronic non-intrusive protection, which is dependable, fail-safe, and sonically transparent.

Each channel is supplied with custom 5-way speaker binding posts and a gold-plated RCA jack for incoming audio signals.

The T975 Five-Channel Amplifier and the T955 Five-Channel Amplifier will ship in 4th Qtr. '06 and sell for US MSRP of $2199 and $1299, respectively.

For more information please visit www.nadelectronics.com .