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NAD C 275BEE

Stereo power amplifier

30 Reviews | 4 questions - 11 answers

Item # 745C275BEE

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Overview

Our take on the NAD C 275BEE

NAD designed the C 275BEE power amplifier from the ground up to deliver the best possible performance in its price range. With a conservative 150-watt-per-channel rating, this potent amp generates the kind of power you need to drive virtually any speaker system with ease. Match it with the NAD C 165BEE stereo preamplifier to create a sound system capable of impressive dynamics, musical detail, and transparency.

NAD designed the C 275BEE power amplifier from the ground up to deliver the best possible performance in its price range. With a conservative 150-watt-per-channel rating, this potent amp generates the kind of power you need to drive virtually any speaker system with ease. Match it with the NAD C 165BEE stereo preamplifier to create a sound system capable of impressive dynamics, musical detail, and transparency.

Advanced technology for stunning sound
The C 275BEE employs many of the same high-end features found on NAD's top-of-the-line Master Series components, including NAD's exclusive PowerDrive™ technology. This unique circuit automatically senses your speaker's impedance, then optimizes the amp's power supply settings to deliver the most dynamic power possible. This allows it to easily drive low-impedance loads, including many of today's high-end speakers, which often run closer to four ohms than eight. Plus, a patented distortion-canceling circuit in the amp's output stage ensures your music stays clean and pure.

A strong, vibration-resistant build
Along with all of its advanced technology, NAD gave the C 275BEE a big helping of good old-fashioned construction quality. This amplifier boasts a heavy-gauge steel chassis for added durability and vibration resistance. Its power supply, the heart of any amplifier, utilizes an interference-canceling toroidal transformer and heavy copper buss bars to channel enormous amounts of current to the custom gold-plated speaker binding posts. Additional premium-quality internal components — such as four pairs of discrete high-wattage output transistors per channel — allow the C 275BEE to handle prolonged high-power operation effortlessly.

Product Highlights:

  • 150 watts x 2 channels into 8 ohms (20-20,000 Hz) at 0.008% THD
  • 4-ohm stable for use with a wide range of speakers
  • signal-to-noise ratio: 102 dB
  • PowerDrive™ circuit with automatic speaker impedance sensing delivers maximum dynamic power output regardless of speaker load
  • switchable Soft Clipping™ circuit gently limits amplifier power output to reduce risk of speaker damage due to prolonged high volume operation
  • distortion-canceling circuit for high-accuracy sound
  • high-current toroidal power transformer
  • all-discrete circuitry with four pairs of high-wattage output transistors per channel
  • 1 pair RCA preamp inputs (switchable fixed or variable)
  • two pairs of custom gold-plated speaker binding posts
  • bridged mode for mono operation (330 watts x 1)
  • 12-volt trigger input
  • detachable AC power cord
  • <1W Standby Power Consumption
  • free of lead and other environmentally dangerous substances
  • weight: 32.2 lbs.
  • 17-1/8"W x 5-15/16"H x 16-1/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee

What's in the Box:

  • Amplifier
  • 6' Power cord
  • Owner's manual (English/ French/ Spanish/ Italian/ German/ Dutch/ Swedish/ Russian)
  • Warranty information

Running two of these as mono block amps could not be happier.

Thomas, Hagerstown, MD

Reviews

NAD C 275BEE Reviews

Average Customer Review(s):

(30 Reviews)
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Details

Hands-on research

Product Research

Features
Controls
Connections
Specifications

Features

Soft Clipping: NAD's Soft Clipping circuit gently limits the output of the C 275BEE to minimize audible distortion when the amplifier is over-driven. While Soft Clipping can be left on at all times to reduce the likelihood of audible distortion from excessive volume settings, you can also turn the circuit off for critical listening if you prefer.

Bridgeable: The C 275BEE can be bridged to a single channel, more than doubling the power output. When bridged, the minimum recommended speaker impedance is 8Ω.

A/B Speaker Terminals: The amplifier features A & B speaker terminals to power two pair of loudspeakers. The amplifier supports 4Ω speakers when only one pair is connected, however, when two pair of speakers are connected a minimum impedance of 8Ω is recommended.

Input Select: A switch on the rear panel allows you to set the input to Fixed or Variable. In the fixed position the input signal is routed directly to the amplifier; typically used in single amp systems, or when multiples of the same amp are used. The variable position allows you to adjust the input level before amplification, useful when matching output levels in a multi-amp system, bi-amping speakers, or extending the volume control range of the preamp.

Auto Turn-on: The C 275BEE can be turned on automatically one of two ways; +12 volt trigger from another component or by sensing an input signal.

Controls

Rear Panel:

  • Input Select: choose Fixed or Variable (variable allows volume adjustment using the Input Level dial)
  • Input Level: rotary dial; adjusts volume to match another amplifier
  • Bridge Mode: switch between stereo and mono amplifier output
  • Soft Clipping: turn the Soft Clipping circuit on/off
  • Power: master power switch
  • +12V/Input Sensing: choose +12 volt trigger or signal sensing to automatically turn the amp on

Connections

Rear Panel:

  • Speakers: the speaker binding posts will accept single banana plugs, pin connectors, spade lugs up to 0.625" wide, and bare wire up to 10 gauge; there are four speaker outputs, A (left and right) and B (left and right); when powering two pair of speakers a minimum impedance of 8Ω is recommended
  • Signal Input: stereo RCA input jacks
  • 12 Volt Trigger: turn the amp on/off along with another device that has a +12 volt trigger output
  • AC Input: 2-pole IEC power input for use with included cord (or optional upgraded cord)

Specifications

Amplifier Section:

  • Continuous Power: 150 watts x 2 into an 8Ω or 4Ω load, 20 Hz - 20 kHz, no more than 0.008% THD, both channels driven simultaneously
  • Continuous Bridged Power: 330 Watts x 1 into an 8Ω load, 20 Hz - 20 kHz, no more than 0.02% THD
  • Dynamic Power:
    • 8Ω: 250 watts x 2
    • 4Ω: 410 watts x 2
    • 8Ω Bridged: 800 watts x 1
  • Rated THD (Total Harmonic Distortion): <0.008% (driving both channels 20 Hz - 20k Hz simultaneously at 8Ω)
  • Signal/Noise:
    • >102 dB (A-weighted, ref 1 watt)
    • >123 dB (A-weighted, ref 150 watt)
  • Damping factor: >180 (ref 8Ω, 50 Hz and 1 kHz)
  • Frequency response:
    • +/- 0.1 dB: 20 Hz-20 kHz
    • - 3 dB: 3 Hz-100 kHz
  • Input impedance:
    • Fixed: 10 kΩ + 200 pF
    • Variable: 100 kΩ + 100 pF
  • Input sensitivity: 1.2 volts (ref rated power)
  • Voltage gain: 29 dB
  • Power Requirement: AC 120V 60Hz
  • Power Consumption:
    • Normal Operation: 312W
    • Standby: <1W
    • Idle: <100W
  • Weight: 32.2 lbs (14.6 kg)

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Accessories
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

I have a Denon AVR-X4300H (9.2 channel) and wanted a quality power amp to drive my new GoldenEar Triton One speakers. This gives me a home theatre system of 7.2.4 (11.2) channels of sweetness. [ Dusty  Mar 30, 2018 ]
Right combination of price, power, and good reviews. [ Douglas  Dec 01, 2017 ]
NAD C 275BEE is a top seller. I have not read one bad review about this amp. Last year i did a big upgrade, and wanted to keep it going with this starter audiophile amp. [ EnlightMent  Dec 01, 2016 ]
I have a NAD preamp and tuner. Very happy with the clean sound from them. When my very old Carver amp started acting up, More NAD seemed the logical choice. [ Winsor  Oct 25, 2016 ]
gotta make klipsch happy in a clean way [ Brian  Jun 03, 2016 ]
aligns with the C375BEE PreAmp for extra power [ brian  Mar 14, 2016 ]
Surprisingly favorable reviews, given it's price point. [ Stephen  Dec 31, 2015 ]
Speaker manufacturer recommended [ Charles  Dec 16, 2015 ]
I currently have a Nad C272 just went bad. Nad is a great product is the New Amp. fits the same requirements as the old one. The old amp is 11 years old. [ Martin  Dec 14, 2015 ]
A lot of positive from user reviews. [ KHUONG  Dec 09, 2015 ]

4 questions already asked

less than expected [ luis  Feb 09, 2018 ]
It just warms warm. Certainly not what I'd consider "hot" by any means. Not as hot as my Mark Levinson ML-9--the heat sinks can get so hot they hurt to touch. Not so with the NAD. Mine is enclosed on 3 sides with about 2.5" on either side, 2" in back. The shelf above it is about 8-10" above. [ David  Feb 07, 2018 ]
not as i want to [ luis  Feb 07, 2018 ]
I believe this is possible but I have not done it. If possible, see pages 7 & 8 of the manual. I can not put a link to it in this reply. [ Bill  Feb 03, 2018 ]
Yes, you can. Here's an excerpt from the user's manual: Bi-Amping Some loudspeakers have separate connection terminals for their LF (Low Frequency) and HF (High Frequency) sections. Where a separate power amplifier is used for the LF and HF section, this facility allows to "Bi-Amp" such speakers which may improve overall sound quality. When Bi-Amping with different models of power amplifiers, it is likely to occur that one power amplifier has more "gain" than the other, resulting in a mismatch in level for the woofer and tweeter of the speaker. Adjust the level control so that woofer and tweeter are in perfect balance with each other (identical gain of power amplifiers). [ ADRIAN  Feb 03, 2018 ]
Yes. They nominal impedance of each set must be 8-ohms. No less. [ Steven  Feb 03, 2018 ]
Yes you can. Both sets of binding posts are powered all the time. [ Shane  Feb 02, 2018 ]
Yes, with the proper bi-wire cable, or cables, this amp can be used to bi-wire a speaker with separate low and high frequency binding posts; be sure to remove the bridge between the posts beforehand. With that said, there is little evidence that bi-wiring improves sound quality. Bi-amping, on-the-other-hand, should produce a notable improvement in sound quality and the C 275BEE can be used to bi-amp if used with another C275BEE and stereo pre-amplifier such as the NAD C 165BEE, or a single NAD C 375BEE. The C275BEE is a versatile amplifier that can be bridged for speakers of 8 ohms, or effectively drive speakers of either 4 ohm, 6 ohm or 8 ohm impedance. [ GREG  Feb 02, 2018 ]
Hi James, Not sure if your receiver will work with a powered sub. I have the amp you are considering paired with a NAD C 165BEE preamp. This preamp has the connection for a powered sub. I have a Definitive Technology Super Cube 2000 which is a great unit. [ Chris  Oct 30, 2017 ]
I am not familiar with the NAD 705, but from what I could find on it, it appears to be a stereo receiver. I have a question for you, does the NAD 705 have a sub-woofer output channel? If it does, and you should be able to use its output to drive the sub-woofer. Does the NAD 705 have pre-amp outputs that can be used to drive the NAD C275BEE? This amp does not have a sub-woofer output. [ ADRIAN  Oct 30, 2017 ]
Sounds like you're describing a bi-amped connection. You'll need to use a preamp out from the receiver as a line level input to the 275BEE. You can achieve a bi-amped configuration with these components, BUT because they have different amplifiers and very likely with a different gain, you may end up with one section of the speaker increasing volume faster than the other. I think the only foolproof way to bi-amp is to use identical amps on both sets of posts. [ JEFF P  Aug 10, 2016 ]
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