Question 1

How to connect the NAD C270 amplifier with the NAD C160 preamplifier for low volume listening?

Accepted Answer

Connecting the NAD C160 preamplifier with the NAD C270 power amplifier is an ideal setup to optimize sound quality, especially during low volume listening. The C270 is a class AB stereo amplifier capable of delivering 2 x 150 W at 8 ohms, greatly benefiting from the precise volume control offered by the C160.

Connecting the devices: Use a quality RCA cable to connect the audio output of the NAD C160 preamplifier to the fixed inputs (FIXED IN) of the C270, identified by color-coded RCA terminals (red for the right channel, black/white for the left channel). Connect the left and right outputs of the C160 to the corresponding jacks. The fixed inputs directly link the signal to the amplification circuits without intermediate stages, preserving the purity of the signal.

Optimal setting for low volume listening: For comfortable low-level listening, first set the C160 preamplifier to the desired volume level, then use the gain control of the C270 (or leave it at a mid-level). This approach utilizes the full adjustment range of the preamplifier and avoids limiting the volume control. Ideally, the volume of the C160 should be used in its upper range (beyond 11 o'clock) for fine adjustments and better sound dynamics.

Cabling and audio quality: Prefer quality shielded RCA cables to minimize interference and signal loss on the link between the two devices. Good connection quality is crucial to preserve signal clarity, especially during low volume listening where background noise becomes noticeable.

Trigger activation: The C270 has a 12 V trigger input that allows synchronization of the power on and off of the C270 with your C160. This handy feature avoids having to operate two separate power buttons and is activated by setting the rear selector of the C270 to AUTO.

Important precautions: Ensure that the C270 amplifier has adequate ventilation to prevent overheating risks. Before any connection, turn off both devices. Also, use compatible speakers (minimum 8 ohms recommended for prolonged use) for optimal performance and maximum lifespan of your audio equipment.

Question 2

What is the output power of the NAD C270 amplifier with a 6 ohm load?

Accepted Answer

The NAD C270 amplifier is a stereo power amplifier designed to provide appropriate power depending on the impedance of your speakers. Contrary to what might seem logical, the output power increases as the impedance of the speakers decreases.

According to the official specifications of the NAD C270, the amplifier delivers a power of 120 watts per channel at 8 ohms. With a 6 ohm load, which is an acceptable impedance (the amplifier supports a minimum of 4 ohms in stereo mode), the output power will be greater than 120 watts per channel, generally estimated between 140 and 160 watts per channel, although NAD does not specify an exact value for this impedance.

The amplifier features built-in thermal protection and NAD's proprietary Soft Clipping circuit that gently limits audio output in case of overload. However, when using low impedance speakers (like 6 ohms), it is crucial to ensure adequate ventilation by clearing the ventilation openings at the top and bottom of the unit, as thermal dissipation increases significantly.

For the best experience, prefer 8 ohm speakers, which provide optimal balance. If you are using 6 ohm speakers, be careful not to overdrive it at very high volume for extended periods, and regularly check that the amplifier does not overheat excessively. In bridge mode (mono), the amplifier can deliver about 300 watts at 8 ohms if you need more power in the future.

Question 3

Is the NAD C270 compatible with the Elipson Prestige Facet 24F speakers?

Accepted Answer

Yes, the NAD C270 amplifier is compatible with the Elipson Prestige Facet 24F speakers. Here are the key points to consider:

Power: The NAD C270 delivers about 80 watts per channel at 8 ohms, which is generally sufficient to properly drive the Elipson Prestige Facet 24F speakers without the risk of underpowering or excessive distortion.
Impedance: The Elipson Prestige Facet 24F speakers have a nominal impedance of 8 ohms, which perfectly matches the expected output of the NAD C270, ensuring good electrical compatibility.
Sound quality: Both brands are known for their audio quality, so the pairing should provide clear, detailed, and balanced sound, ideal for hi-fi listening.

In summary, you can confidently use the NAD C270 with the Elipson Prestige Facet 24F speakers for a quality audio experience.

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