Leider hat das Gerät einen Wackelkontakt, vielleicht kann der ein oder andere Bastler das Gerät reparieren

NAD Electronics C 298 Stereo Power Amplifier / Eigentakt This amp has had very little use and is in like new condition. No scratches or smell of tobacco smoke or cologne. I’m selling it because I’m downsizing to a smaller integrated system. Ships in the original box, Docs, and power cable(s). Features:185W x 2 Rated Output Power into 8 Ohms 340W x 2 Rated Output Power into 4 Ohms Stereo Dynamic Power 260/490/570W @ 8/4/2 Ohms 620W x 1 Rated Output Power into 8 Ohms Bridge Mode Mono Dynamic Power 1000/1100W @ 8/4 Ohms Balanced Line Inputs Single-Ended Line Inputs Input Level Control Line Output for Daisy Chaining 12V Trigger In/Out Auto Turn-on with Selectable Threshold Ground Lug Detachable AC Power CordRedefining the State of the Art with Purifi TechnologyNAD has introduced some of the most innovative amplifier technology in its nearly 50-year history starting with the 3020 on through such cutting edge models as the 2200 the 208 and the M2. Now we are making the amazing new Eigentakt™ (self-clocking) technology recently introduced tothe world in the EISA Award-winning Masters M33 available to a wider audience with the very affordable C 298. We are thrilled to provide this unprecedented level of performance. In short a perfect companion for the C 658 BluOS Streaming DAC preamplifier.Amazing FlexibilityThe C 298 may appear to be a basic Power Amplifier but we have carefully thought through all the use cases typically encountered to create a rich feature content. Selectable balanced inputs make the C 298 a natural for studio use or connection to High-End Preamplifiers and Processors. These inputs include a trim control useful for matching to other components. A line out allows further addition of power on the same channel for additional speakers or subwoofers. Auto-sense with a selectable threshold is perfect for automating complex systems or hiding the amplifier out of sight in a cabinet. We even include a Ground Lug that can be very useful for eliminating ground loops and noise in complex multi-unit systems. Added to all this connectivity is a Bridge Switch that turns the C 298 into an amazingly powerful Monoblock Amplifier. Start with one and add a second C 298 later when you upgrade your speakers. Getting the Basics RightIt is surprising how many seemingly advanced products in the market today often miss many of the most basic requirements for satisfying performance. Low noise circuits accurate channel balance proper input and output impedance characteristics high overload margins and stability with difficult speaker loads. NAD starts by getting these things precisely right and advances from there. Our line inputs both Balanced and Single-ended can accommodate all kinds of analog source components by offering ideal input impedance characteristics with linear ultra-low-noise buffer amplifiers to prevent any sonic degradation caused by inappropriate loading of the source device. These are all details you can hear.Sophisticated PowerNAD has moved away from the old fashioned and very power-hungry linear power supplies and Class AB output stages that waste nearly half of the energy consumed producing heat rather than sound. Instead they have developed even better performing circuits based on switch mode power supplies and Class D output stages. Once thought to be inferior to traditional topologies NAD’s advanced work in this area has created some of the best performing amplifiers regardless of basic design principle. These new designs are very linear over a wide bandwidth and provide consistent performance into all speaker loads providing a dramatic advance over previous models.Purifi Eigentakt Amplifier TechnologyPurifi is a Danish technology company that has brought together several of the industry’s leading engineers to apply advanced mathematical modeling to solve the last remaining limitations of audio amplifiers. While there are many good sounding amplifiers on the market today Purifi has taken a fresh look at every aspect of amplifier performance and found many seemingly small non-linearities that can make a dramatic difference in the overall sound. This return to first principles has resulted in a stunningly simple approach to some remarkably complex problems. With features and technology unmatched by other amplifiers in its class the C 298 amplifier is an easy upgrade for any system and a surprising partner for the most sophisticated and advanced loudspeakers on the market. The Eigentakt modules are manufactured by NAD under license from Purifi allowing NAD to optimize these specifically in combination with the custom-designed power supply and input stages of the C 298.SpecificationsAnalog Audio Input/Line OutTHD (20 Hz - 20 kHz): <0.0005% at 2V outSignal-to-Noise Ratio: >120 dB (IHF; 20 Hz - 20kHz ref. 2V out)Channel Separation:>110 dB (1 kHz)>100 dB (10 kHz)Input Impedance (R and C):Single-ended: 56 kohms + 280 PFBalanced: 56 kohms + 280 pFMaximum Input Signal: >7.0 Vrms (ref. 0.1% THD)Output Impedance: 390 ohmsFrequency Response: ±0.1 dB (20 Hz - 20 kHz)Maximum Voltage Output-IHF load: >7.0 V (ref. 0.1% THD)Analog Audio Input/Speaker OutRated output power into 8 Ohms and 4 ohms (stereo mode) 80 W (ref. 20 Hz-20 kHz at rated THD both channels driven): 185 W at 8 ohms340 W at 4 ohmsRated output power into 8 Ohms (bridge mode ref. 20 Hz-20 kHz at rated THD both channels driven): 620 W at 8 ohmsTHD (20 Hz - 20 kHz): <0.005% (1 W to 185 W 8 ohms and 4 ohms)Signal-to-Noise Ratio:>98 dB (A-weighted 500 mV input ref. 1 W out in 8 ohms)>120 dB (A-weighted ref. 185 W out in 8 ohms)Clipping power (Stereo mode at 1 kHz 0.1% THD): >200 WIHF dynamic power (Stereo mode at 1 kHz 1% THD):8 ohms: 260 W4 ohms: 490 W2 ohms: 570 WIHF dynamic power (Bridge mode at 1 kHz 1% THD):8 ohms: 1000 W4 ohms: 1100 WPeak output current: >25 A (in 1 ohm 1 ms)Damping factor: >800 (ref. 8 ohms 20 Hz - 6.5 kHz)Frequency Response:±0.2 dB (20 Hz - 20 kHz)-3 dB at 60 kHzChannel separation:>100 dB (1 kHz)>80 dB (10 kHz)Stereo Mode input sensitivity (for 185 W in 8 ohms): Fixed Gain Mode: 1.43 VStereo Mode Gain: Fixed Gain Mode: 28.6 dBLine In - Balanced and Single-ended: Variable Gain Mode: 8.5 dB - 28.5 dBBridge Mode Sensitivity: Fixed Gain Mode: 3.78 V for 620 W in 8 ohmsLine In - Balanced and Single-ended: Variable Gain made at maximum: 1.41 V for 620 W in 8 ohmsBridge Mode Gain: Fixed Gain mode: 25.4 dBLine In - Balanced and Single-ended: Variable Gain mode: 14.5 dB - 34.5 dBStandby Power: <0.5 WDimensions & WeightDimensions (W x H x D): 17-1/8 x 4-3/4 x 15-3/8Weight: 24.7 lbs