NAD C 352
The NAD C 352 is an upper-range integrated stereo amplifier from the mid 2000s.
The power supply uses a toroidal transformer and two large 22000µF filter capacitors. A separate transformer is used for the control circuitry and standby mode. The output stage is built with SanKen 2SA1295 and 2SC3264 transistors in a common-collector push-pull configuration.
One pair of speakers is supported, and a relay is used for delayed start and protection. The volume control is motorized, and input selection is made with eight relays. The back panel features a Soft Clipping option that reduces the effects of clipping distortion during high-volume operation.
Sonic performance is very good and accurate. Distortion is very low. The visual appearance is somewhat debatable, but some users may find it appealing. Remote control is supported.
Manufacturer: NAD
Status: Active company
Official website: nadelectronics.com
General Specifications
Maximum power (8Ω): 80WFrequency response (20Hz-20kHz): ±0.3dB
THD (at rated power): 0.02%
IMD (at rated power): 0.003%
Signal to noise ratio (1W): >120dB
Input sensitivity: 770mV
Damping factor: >150
Speaker load impedance: 4Ω-16Ω
Dimensions (WHD): 435×100×290mm
Weight: 7kg
Produced: 2003-2007
Initial price: €595
Measured Values
Maximum power (8Ω): 94.8WFrequency response (20Hz-20kHz): <0.2dB
Channel imbalance: <0.2dB
THD (1kHz, 1W): 0.0018%
THD+N (1kHz, 1W): 0.0091%
THD (1kHz, 20W): 0.0014%
THD+N (1kHz, 20W): 0.006%
IMD (70Hz, 5kHz, 1W): 0.0067%
Noise: -75.8dB
Amplification: 84.1
DC offset L: 2.0mV
DC offset R: 3.5mV
Factory Specification Sheet
Factory specification images are sourced directly from the device's original service manual or user manual. These documents are produced by the manufacturer and provide authoritative information on the product's specifications.
Maximum Power
Maximum power is measured using 8Ω resistors on both channels. A 1kHz sine wave input signal is applied and gradually increased until higher harmonics rise significantly. Typically, this is the point at which output clipping occurs.
Frequency Response
Frequency response is measured using several equilizer settings. 'Flat' indicates the tone controls are either turned off or set to their neutral position. 'Max' and 'Min' refer to the maximum and minimum tone control positions, respectively. In the phono section, the expected response follows the RIAA equalization curve.
Residual Noise
These graphs display the noise levels at various volume positions. To eliminate any interference from the input signal, the input lines are shorted during the measurement. Generally, the noise is highest at the mid-point of the volume range (50%)
Distorsion
Total harmonic distortion (THD) is measured using a 1kHz sine wave input, with the output level adjusted to meet different conditions. Intermodulation distortion (IMD) is measured using 'two sine' input signal. THD versus voltage is measured with a 1kHz sine wave input, while THD versus frequency is measured at various output levels.
