NAD Comprehensive Guide for Your Stereo Amplifier: 270 Features and Controls
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FRONT PANEL CONTROLS (FIGURE 2)

1. POWER ON/OFF

Press this button to switch the amplifier on or off. The Power On/Standby (No. 2) indicator located just above the power button and Protection indicator will light up. After a few seconds, the Protection LED will turn off, indicating that the amplifier is ready for use.

The C270 can also be remotely switched from On to Stand-by and vice-versa using the 12V trigger input on the back panel. For the 12V trigger input to work, the C270 must first be turned on by means of the Power switch, and the switch must be left in this position. Using the 12V trigger source component, switch its 12Vtrigger output to on and off. The C270’s Trigger Input will now follow the source component’s 12V trigger output. Ensure that the Auto Trigger switch on the back panel is in the AUTO position and that the 12V trigger input is connected properly. Refer to section “12V Trigger In” in the chapter above for more information.

NOTE: In Stand-by mode the C270 uses very little power. However, it is recommended that you switch the unit totally off if it is not going to be used for more than a couple of days. Switch off completely by pressing the POWER button on the front panel (No. 1), all lights will extinguish.

2. STAND-BY/PROTECTION INDICATOR

Upon switching Power on, the indicator will light up red and after a short pause turn to green to indicate the amplifier is ready for use.

In cases of serious abuse of the amplifier, such as overheating, excessively low loudspeaker impedance, short circuit, etc. the amplifier will engage its Protection circuitry. The indicator will light up red and the sound will be muted. In such a case, turn the amplifier off, wait for it to cool down and/or check the speaker connections, making sure the overall loudspeaker impedance doesn’t go below 4 ohms or 8 ohms in Bridge Mode. Once the cause for the protection circuitry to engage has been removed, switch the amplifier On again.

The diagram below shows the operation of the Stand- by/protection indicator:

 

Green

Amber

Red

Normal Operation

•

 

 

Stand-by

 

•

 

Protection

 

 

•

 

 

 

 

3. SOFT CLIPPING™ INDICATOR

The green SOFT CLIPPING™ indicator shows that the Soft Clipping™ mode is engaged. Refer also to chapter “Rear Panel Connections”, section 7; “Soft Clipping™” for more information.

4. BRIDGE MODE INDICATOR

The BRIDE MODE indicator lights up (amber) when the C270 is switched to Bridge Mode. Refer also to chapter “Rear Panel Connections”, section 6, “Bridge Mode” for more information.

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Contents C270 Important Safety Instructions Rear Panel Connections Front Panel Controls Level matching NAD C270 Stereo Power AmplifierExtended volume control range Bi-AmpingSpeakers a & Speakers B Bare Wires and PIN ConnectorsBridge Mode Soft ClippingSoft Clipping Indicator Front Panel Controls Figure Power ON/OFFSTAND-BY/PROTECTION Indicator Bridge Mode IndicatorTroubleshooting Amplificateur de Puissance NAD C270 ’utilisateur peut intervenirEquilibrage des niveaux d’entrée Bi-Amplificateurs Commande DE Niveau D’ENTREE Input LevelMode Ponte HAUT-PARLEURS a & HAUT-PARLEURS BEntree Asservissement 12 Trigger Ecretage Doux Soft ClippingMARCHE-ARRET Auto Asservissement Cordon Alimentation SecteurIndicateur DE Mode Ponte Bridge Mode Indicateur D’ECRETAGE Doux Soft ClippingDepannage Pegelabgleich Endverstärker NAD C270Vom Benutzer reparierbaren Teile Erweiterter LautstärkeeinstellungsbereichBlanke Drähte UND Endhülsen Eingangspegelsteller Input LevelLautsprecher a + B Speakers a + Speakers B BRIDGE-MODUS BrückenschaltungWahlschalter 12V Trigger Auto ON/OFF Frontplattenelemente Abbildung Netz EIN/AUS Power ON/OFFAnzeige Bridge Mode Eingang 12V TriggerProblemlösung Hacer coincidir el nivel Gama de control de volumen ampliadaAmplificador NAD C270 Bi-Amping biamplificaciónControl Input Level Nivel DE Entrada Cordon DE Linea DE CA Controles DEL Panel Delantero FIG Power ON/OFFIndicador Bridge Mode Funcionamiento normal Stand-by ProtectionInvestigacion DE Averias Campo esteso controllo del volume Amplificatore NAD C270Appaiamento livello Fili Scoperti E Connettori a Piedini Controllo Livello DI InputAltoparlanti a ED Altoparlanti B Modo PonticellareIndicatore DI Distorsione Soft Clipping Comandi SUL Quadro Anteriore FIG Power ON/OFF ACCESO/SPENTOIndicatore STANDBY/PROTEZIONE Indicatore DEL Modo Ponticellare Bridge ModeStereo Assente O Svanita Ricerca GuastiNON VI E’ Suono Accende L’UNITA’Ajustar os níveis Gama alargada de controlo de volumeAmplificador de Energia NAD C270 Bi-AmplificaçãoBridge Mode Modo DE Ligação EM Ponte Input Level Control Controlo DE Nível DE EntradaSpeakers a & Speakers B Altifalantes a E B Soft Clipping Limitação Suave 12V Trigger Entrada DE Disparo DE 12Cabo DE Alimentação AC Soft Clipping Indicator Indicador DE Limitação Suave Resolução DE ProblemasNivåmatchning Utökat reglerområde på volymkontrollen12V Trigger Automatiskt AV OCH Påslag Högtalarterminaler a & BBryggkoppling 12V Trigger IngångSTAND-BY/SKYDDSLÄGESINDIKATOR Soft Clipping IndikatorBryggkopplingsindikator Felsökning NAD Electronics

C270 specifications

The NAD C270 is a highly regarded power amplifier that has captured the attention of audiophiles and music enthusiasts alike. Known for its impressive performance and reliability, the C270 has become a staple in many home audio systems. This amplifier is part of NAD’s esteemed lineup, which is renowned for its commitment to high-quality sound reproduction and innovative technologies.

One of the key features of the NAD C270 is its robust construction. Built to withstand the rigors of everyday use, the amplifier features a solid chassis designed to minimize vibrations and protect internal components. This sturdy design not only enhances durability but also contributes to the overall sound quality, as stability is crucial for clarity in audio reproduction.

At the heart of the C270 is its impressive power output. The amplifier is capable of delivering a continuous RMS power of 130 watts per channel into 8 ohms, and it can increase its output to 200 watts per channel into 4 ohms. This significant power allows the C270 to drive a wide range of speakers, providing ample headroom for dynamic musical passages. Additionally, it features high current capability, which ensures excellent transient response, allowing it to handle the most demanding musical passages with ease.

The NAD C270 employs advanced technologies that improve its performance and efficiency. One notable feature is its use of NAD’s unique PowerDrive technology. This innovative design allows the amplifier to maintain its dynamic performance while ensuring reliability and protection against overheating. PowerDrive analyzes the output requirements and provides optimal power, ensuring consistent performance regardless of the speaker load.

Another significant aspect of the C270 is its dual-mono design, which provides independent amplification for each channel. This ensures that both the left and right channels operate without interference, resulting in a more immersive listening experience. The symmetrical layout also helps to minimize crosstalk, preserving the integrity of the audio signal.

In terms of connectivity, the C270 offers a variety of input options, allowing it to integrate seamlessly into any audio setup. With RCA inputs for standard connections and a low-level input for preamp connections, the amplifier caters to both classic and modern audio systems.

Overall, the NAD C270 is a powerful and versatile amplifier that embodies the essence of high-fidelity sound. Its combination of robust design, advanced technologies, and impressive performance makes it a popular choice for serious audio enthusiasts seeking to elevate their listening experience. Whether used with high-end speakers or as part of a home theater system, the C270 promises to deliver an audio experience that is both captivating and true to the original recordings.
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