NAD Master Series M22 Stereo Power Amplifier
Connect to the emotion of live performance through detailed sound with amazing control and transparency. This is the M22. It is easy tofind amplifiers that can excel in one or two areas, but the M22 is truly an amplifier that does everything well. Wide open-loop bandwidth,extremely low-phase shift, almost non-existent noise, harmonic and intermodulation distortion independent of load (load invariant),high current capability, low output impedance (high damping factor) uniformly at all audible frequencies‚¬?it all adds up to incredibleperformance. You just have to hear it to feel it.
> Hybrid Digital Amplification
The M22 is using the latest nCoreTM amplifier technology licensed from Hypex to provide a nearly ideal amplifier with distortion below measurement, ultra-high damping factor, and unconditional stability with any speaker. Tight, detailed sound with amazing control and transparency gets the best performance available. With nCore, Hypex has refined their UcD concept to new levels of perfection by improving the modulator for more accurate feedback subtraction and PWM generation. The all-discrete driver and output stage have also been improved for lower open-loop THD as well as lower idling losses, normally conflicting requirements with conventional IC driver circuitry. An added control loop incorporating an integrator with adaptive clipping enables 20dB more feedback to be used across the audio band because of its extremely low-phase shift resulting in a dramatic reduction in distortion across the audio band. This is added to UcD‚¬„s already amazing characteristics of load invariance and high current capability, common characteristics of great-sounding amplifiers.
> Effortless Power
Employing the latest generation of digital PowerDriveTM, the M22 offers a minimum of 250W per channel with amazing reserves of dynamic power at lower impedances. The M22 is capable of >300W dynamic power per channel even in 8 ohms, and >600W in 2 ohms. It can effortlessly power any loudspeaker to live performance levels with amazing efficiency and low power consumption. Control for PowerDrive is derived by sensing theaverage output power, applying a time constant, and then cleanlyhard clipping the signal thus limiting it to the rated continuousclipping power over a sustained loading. By controlling the powerenvelope maximum clean power is obtained for every operatingcondition.
> Perfecting Performance
The output stage is only one of several circuits in the amplifier, andeach must complement the other to obtain optimal performance.The amp is DC coupled throughout, from input to output, thereis no capacitor in the forward signal path. Yet, it has a beneficial12dB/octave roll-off below 2Hz. It does this using a unique circuittopology that is functionally a forward servo. It is however nota servo in the traditional sense as it does not measure DC atthe output and send back a correction signal. Instead part of theinput signal is fed to a side chain with a second order low-passfilter. The output of this is subtracted from the forward signal inputto the second stage thus rejecting DC.
> Clean and Dynamic
The performance of the entire signal path is critically dependenton the power supply; in this case a well regulated, but not tootight, custom switch mode design. This allows maximum dynamicpower, very high current yet with very low distortion. Secondarysupplies are individually regulated and decoupled at each opampfor lowest possible noise and maximum dynamic range.
LINE IN, SPEAKER OUT M22 Continuous output power into 8 Ω and 4 Ω (Stereo) >250W (at rated THD, 20Hz-20kHz, both channels driven) THD+N 20Hz - 20kHz, CCIF IMD, SMPTE IMD, DIM 100 <0.003% (250mW to rated power, 8 Ω and 4 Ω) Clipping Power (8 Ω) >300W (at 1kHz 0.1% THD) IHF Dynamic Power 8 Ohms
Peak Output Current >50A (ref. 1 Ω, 1ms) Signal/Noise Ratio, A-weighted, ref 1W >100dB
Damping Factor >800 (ref. 8 Ω, 50Hz and 1kHz) Frequency Response 3Hz - 30kHz (ref. -3dB) Input Impedance RCA
17kΩ + 200pF
200kΩ + 100pF
Input Sensitivity 1.6V (ref. rated power) Voltage Gain 29dB GENERAL Standby Power <0.5W Idle Power 40W Unit Dimension (WxHxD) - Gross* 435 x 103 x 379mm
17 1/8 x 4 1/16 x 14 15/16 inches**
Net weight 8.9kg (19.6lb) Shipping weight 15kg (33.1lb)
All eligible company warranty and service support is being provided on NAD MASTERS SERIES M22 STEREO POWER AMPLIFIER