C 375BEE Integrated Amplifier

> POSITIONING

The C 375BEE is far more than a bigger C 355BEE in fact, it is much closer in spec to the M3 Integrated Amplifier from NADs high end Masters Series. It also incorporates an updated version of NADs Building Block concept to make the addition of the PP375 phono module and other affordable future upgrades possible. Attention to the most minute detail is evident everywhere, from the heavy gauge steel chassis to the sophisticated power supplies and copper buss bars channeling almost absurd amounts of current to the custom gold plated speaker binding posts. The C 375BEE boasts many upgrades and refinements taken directly from the highly acclaimed NAD Masters Series M3 Amplifier. These include application of Bjorn Erik Edvardsens innovative and patented Distortion Canceling Circuit in the output stage and BEE Clamp in the power supply. An improved tone control circuit and revised PCB layout has reduced distortion and noise to unprecedented levels. Taken together, these improvements mark a sharp upturn in performance that simply must be heard, to be fully appreciated!

> FEATURES

150W x 2 Continuous Power into 4 ohms and 8 ohms 250W, 410W, 600W IHF Dynamic power into 8, 4 and 2 ohms, respectively PowerDriveTM circuit NAD SR-8 Full System Remote Control Headphone socket Front panel Media Player (MP) input for attaching portable MP3 Player Relay Input Switching Holmgren Toroidal Power transformer 7 Line inputs, including two tape in/outs All discrete circuitry
Class A Voltage Stages (Preamp and Power Amp) Distortion Canceling Circuit BEE Anti-saturation Clamp Short signal path from input to output All sockets Gold plated Tone controls defeat switch Main-amp input & 2 pre-amp outputs Speaker A + B outputs and switching Soft ClippingTM IR Input/Output 12V trigger out
RS-232 serial port Detachable IEC Power Cable Optional PP375 MC/MM Phono Module <1W Standby Power Consumption Free of lead and other environmentally dangerous substances

> DETAILS

Features The C 375BEE is fully remote controlled and comes supplied with the NAD SR 8 system remote control. The remote control features an ergonomic form, with large buttons that are differentiated by shape and position, to make operation intuitive and enjoyable. The SR 8 will also operate many other NAD products such as CD players, tuners, etc. Flexibility is another NAD strong point. The C 375BEE has 7 line inputs (including 2 tape in/outputs with dubbing facility) and the pre-amplifier section can be separated from the power amplifier for easy upgrades or adding ancillary equipment. Thus the C 375BEE can be expanded to meet future system needs. The C 375BEE sports pre-amp outputs: Many systems benefit from the use of multiple power amplifiers for Bi-Amping (using separate power amplifiers to drive the bass and treble section of a loudspeaker). The first Preamp Out includes a level trim control to allow matching of amps or speakers with different sensitivities. Additionally there is a second Preamp Out to connect to powered subwoofer, an increasingly popular option. Another option is to bridge the C 375BEE and add the matching C 275BEE (identical except without the preamp and source switching) for one of the most powerful home audio systems youll ever encounter. Power goes from 150W x 2 to over 400W x 2! For remote on/off switching of ancillary components in a system, such as power amplifiers or active speakers, the C 375BEE is equipped with a 12V-trigger system. When switching the amplifier on, the 12V-trigger output is also activated which in turn can activate a 12V-trigger input, switching on the remote devices. Besides the 12V-trigger, the C 375BEE also has rear panel IR in and out. It is fashionable to omit tone controls nowadays: However, provided that the tone controls are properly designed, they can be really useful tools in making improvements to the overall sound. The C 375BEE tone controls only work at frequency extremes leaving the critical mid-band essentially unaltered. The tone control circuits can be completely bypassed using the tone defeat switch. The C 375BEE also incorporates NADs acclaimed switchable Soft Clipping circuit, which significantly reduces the risk of damage to loudspeakers due to prolonged high power operation. Design: PowerDriveTM The C 375BEE also benefits from NADs proprietary PowerDriveTM circuit topology, now well established and used throughout the NAD product range. The PowerDrive topology allows the C 375BEE to deliver maximum performance under virtually any circumstance, independent of the loudspeakers it is driving. The circuitry automatically senses the impedance characteristics of the loudspeaker and will then adjust its power supply settings to best cope with that specific load. PowerDrive topology is a practical approach to enable an amplifier to easily deal with musical dynamics and difficult speaker loads. Thus we have the highly desirable characteristics of high dynamic power and low impedance drive capability in one affordable package. Getting high dynamic power from the power supply to your loudspeaker requires a fast wideband amplifier stage rugged enough to pass and control high peak currents without premature protection intervening. The safe operating limit for the C 375BEE has 4 times the capacity of the typical amplifier in this price range by using 4 pairs of 220W output transistors per channel. The C 375BEE has the lowest levels of distortion and noise available in its price class and is easily capable of embarrassing far more expensive products. To prove it NAD uses Full Disclosure Power (FDP), the most demanding criteria for performance measurement. FDP specifies distortion under the most extreme conditions of low impedance loads and frequency extremes rather than the simple and easy 1kHz @ 8 Ohms test quoted by many of our competitors. We use this stricter performance criteria because it more closely matches the demands of real music and real loudspeakers. Maintaining specified distortion at 4 Ohms and at 20Hz and 20kHz is several orders of magnitude more difficult to achieve than the simple 8 Ohms and 1kHz test. NAD also takes a stand against the meaningless brochure power touted by many of our competitors by offering Full Disclosure power specs. We specify minimum continuous power, across the entire audible range of frequencies, at rated distortion, for both 8 and 4 Ohms with all channels driven simultaneously. Perhaps even more importantly, we also specify Dynamic Power at 8, 4, and even 2 Ohms, which better describes the way the amplifier will perform in the real world, with musical signals and reactive loudspeaker loads. Less Distortion = More Music Noise and distortion mask the fine details of a musical recording robbing musical texture and dimension and replacing them with non-musical artifacts. NAD has spent the last 35 years perfecting our designs to have the lowest distortion and highest power in its price class. This cannot be overstated! Our competitors often rate distortion at only 80% of rated power, and even then cant match our very conservative spec of 0.009% at any frequency within the range of human hearing. Our noise spec is often 10dB (100 times!) less than that of competing amplifiers. This is far from a trivial difference as fine detail and nuance (micro dynamics) are often obscured by noise in lesser amplifiers, robbing a performance of that illusive sense of realism. It is that exciting feeling of being there at the live performance. But even the most carefully reported specs cannot fully describe the sonic performance of an amplifier. Only your own ears can finally judge our achievement. We urge you to listen and compare NAD to other products in its price range, and even higher. We dont think youll find anything that comes close to offering the C 375BEEs overall musical satisfaction, well-rounded performance, and stellar value for money.

> REAR LINE DRAWING

Shown with optional PP375 phono module

> SPECIFICATIONS

Pre-Amplfier Section Line level input, Pre OUT THD (2V in 2V out, CCIF IMD, DIM 100) Signal/Noise ratio IHF Channel separation 1kHz 10kHz Input impedance (R and C) Maximum input signal Output impedance Pre out Variable out Tape out Input sensitivity Frequency response Maximum voltage output IHF load 600 ohm load Tone Controls Treble Bass 5dB at 10kHz 8dB at 100Hz >10V (ref. 0.03% THD) >10V (ref. 0.03% THD) 75 <325 Source Z + 1kHz 158mV (ref. 500mV out) 0.1dB (ref. 20Hz - 20kHz, Tone defeat ON) 0.5dB (ref. 20Hz - 20kHz, Tone defeat OFF) Overall Specifications CD IN, Speaker OUT THD (250mW to rated power, CCIF IMD, DIM 100) Signal/Noise ratio Frequency response Channel separation Power Consumption Rated power Standby power >150W (ref. rated THD, 20Hz-20kHz, both channels driven) Dimension and Weight >330W <0.009% (ref. 20Hz - 20kHz) >170W (ref. 1kHz 1% THD) 4 250W 410W 600W 800W 1200W * Gross dimensions include feet, extended buttons and rear panel terminals. Note: Installers should allow a minimum clearance of 55mm for wire/cable management. Peak output current Signal/noise ratio >50A (ref. 1, 1ms) >102dB (A-weighted, ref. 1W) >123dB (A-weighted, ref. 150W) Dimensions (W x H x D) IHF dynamic power IHF dynamic power (Bridge mode) Shipping weight 18.0 kg Gross* 435 x 150 x 396mm Net 435 x 133 x 352mm Idle power 290W (ref. 230V AC 50Hz; 120V AC 60Hz) <1W <120W <0.009% (ref. 20Hz - 20kHz) >94dB (A-weighted, ref. 1W) >113dB (A-weighted, ref. 150W, volume set for 2V input) 0.2dB (ref. 20Hz - 20kHz, Tone Defeat ON) 10Hz 65kHz (ref. -3dB) 1kHz 10kHz >80dB >70dB >0.004% (ref. 20Hz 20kHz) >102dB (A-weighted, ref. 500mV) >110dB (A-weighted, ref. 2V, Volume maximum) >92dB (A-weighted, ref. 100mV in 100mV out - unity gain) >80dB >70dB Channel separation 100k+ 320pF >8V rms (ref. 0.1 THD) Trigger Out Output resistance Output current Output voltage <120 50mA +12V 1kHz 10kHz >85dB >75dB Power Amplfier Section - continued Damping factor Frequency response Input impedance Input sensitivity Voltage gain Headphone output impedance 0.1dB (ref. 20Hz - 20kHz) 3Hz 70kHz (ref. -3dB) 10k + 200pF 1.2V (ref. rated power) 29dB 68 >200 (ref. 8, 50Hz and 1kHz)

Power Amplfier Section Main IN, Speaker OUT Continuous output power into 8 and 4 (Stereo) Continuous output power into 8 (Mono, Bridge mode) Rated THD (CCIF IMD, DIM 100) Clipping power

Net weight 15.3 kg

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