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Cambridge Audio Azur 351A Stereo integrated amp with USB input (Black)

Item # 779351AB

We know the dilemma.

We know the dilemma.

1 question - 3 answers

Item # 779351AB

Shop all Cambridge Audio Integrated Amplifiers

About the Cambridge Audio Azur 351A

Woody Sherman

The possible dream

We know the dilemma. Sometimes the ear wants more than the bank account can deliver. And you're not a person who's willing to compromise. So it's exciting to find out the wait for your dream system might be a lot shorter than you might think. Cambridge Audio's Azur 351A integrated amplifier features all the legendary build quality you'd expect from their distinguished nameplate, and plenty of clean, reliable power for the most demanding music — thanks to the heavyweight toroidal transformer found inside its chassis.

The possible dream

We know the dilemma. Sometimes the ear wants more than the bank account can deliver. And you're not a person who's willing to compromise. So it's exciting to find out the wait for your dream system might be a lot shorter than you might think. Cambridge Audio's Azur 351A integrated amplifier features all the legendary build quality you'd expect from their distinguished nameplate, and plenty of clean, reliable power for the most demanding music — thanks to the heavyweight toroidal transformer found inside its chassis.

The Cambridge Audio Azur 351A integrated amplifier's toroidal transformer

The Cambridge Audio Azur 351A's toroidal transformer is the reason you'll have plenty of clean power for your music

Everything you need and nothing you don't

Because Cambridge Audio is dedicated to giving you exactly what you need for rich, full-bandwidth musical reproduction, your hard-earned resources go exclusively toward circuitry, materials and electrical components that further the quality of your sound, and nothing more. If you're looking for a unit that will wake you with an alarm, trigger your lawn sprinkler system, or turn off with a clap, look elsewhere.

A strategy for every source

All your popular music sources will have a home. The 351A offers 6 gold-plated analog inputs (1 is a minijack on the front for media players like an iPod® or smartphone) and 1 USB input, which feeds an internal Burr-Brown DAC, allowing you to access your computer's audio files without using its noise-prone audio card. If you enjoy using iTunes® playlists or Spotify® streaming for your life's soundscape, the 351A has got you covered. And should you wish to add a turntable to your source mix, simply add a phono preamp in line ahead of one of the RCA inputs.

For a match made in audio heaven, check out Cambridge's Azur 351C CD player.

Attention to fine detail

Even something as seemingly simple as the unit's volume control has been thought through to maximize overall quality. The ALPS black-box film volume control achieves remarkable channel balance, even at very low volumes — that's a common area of dissatisfaction with less worthy components. Two sets of binding post speaker terminals will allow you to route the amp's output to speakers in two different locations, so you can enjoy your tunes throughout your living space.

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Product highlights:

  • 45 watts x 2 channels into 8 ohms (20-20,000 Hz), 0.15% THD at 80% of rated power
  • signal-to-noise ratio: >92 dB
  • toroidal power transformer for low noise and high-current output
  • separate transformer taps for left and right channels, twin rectifiers and separate PSUs for dual mono operation of the left and right power amps
  • 5 RCA line-level analog audio inputs accommodate CD players, tuners, other components
  • front-panel minijack input for connecting a portable music player
  • 1 stereo RCA record output
  • connect a turntable with a phono preamp
  • USB input accepts 16-bit, 32/44.1/48kHz signals, no drivers needed for Mac® or Windows® computers
  • infrared control input and control bus input/output for integration into multi-room systems
  • full-size headphone jack
  • remote control
  • 16-15/16"W x 3-7/16"H x 14-5/8"D
  • weight: 13.2 lbs.
  • warranty: 3 years
  • MFR # 351A-BK

What's in the box:

  • Integrated amplifier
  • 6' AC power cord
  • IR remote control (RC-351A/C)
  • 3 "AAA" batteries
  • Quick Start Guide (En/Fr/Sp)
  • Important Safety Instructions

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More details on the Cambridge Audio Azur 351A

Stacey B.

Features & specs

Performance Specs
Watts RMS per Channel (8-ohms) 45
Watts RMS per Channel (6-ohms) Not given
Watts RMS per Channel (4-ohms) Not given
Frequency Bandwidth 20-20k
THD 0.15%
Minimum Impedance 4 ohms
Amplifier Class AB
Signal to Noise Ratio 92
DAC Bit Depth 16-bit
DAC Sample Rate 48kHz
Features
Built-in DAC (Digital to Analog Converter) Yes
Wi-Fi N/A
Built-in Radio Tuner None
Room Correction ---
High-res Audio Playback
From Network No
From USB Thumb Drive (USB-A) No
From Computer (USB-B) No
Bluetooth
Version Info N
Receiver Mode No
Transmitter Mode No
AAC Playback No
aptX Playback No
aptX-HD Playback No
LDAC Playback No
Connections
RCA Line-level Inputs ---
XLR Line-level Inputs ---
Phono Input No
Optical Digital Inputs No
Coaxial Digital Inputs No
USB Input No
HDMI Inputs ---
Stereo Preamp Outputs ---
Subwoofer Outputs No
Recording Output Yes
HDMI Output ---
Home Theater Bypass No
Pre-out/Main-in Loop No
Headphone Output 1/4"
Removable Power Cord ---
Streaming Compatibility
Apple AirPlay No
Apple AirPlay 2 No
DTS Play-Fi No
Chromecast built-in No
Roon No
HEOS No
BluOS No
Dimensions and Warranty
Width (inches) 16-15/16
Height (inches) 3-7/16
Depth (inches) 14-5/8
Weight (pounds) 13.2
Parts Warranty 3 Years
Labor Warranty 3 Years

Product Research

Features
Controls
Connections
Add-On Devices

Features

Full Metal Chassis: The 351 A integrated amplifier features an acoustically damped, low resonance full-metal chassis with a thick, brushed aluminum front-panel.

45W x 2Ch Integrated Amp: Separate very high quality integrated circuit amplifiers are used for each channel for freedom from crosstalk and best possible stereo imaging. The Cambridge Audio Azur 351 A delivers an impressive 45 watts per channel into 8 ohms, at 20-20kHz, with 0.15% THD at 80% rated power.

Torodial Transformer + Extruded Heatsink: At the heart of the 351A lies a heavyweight, audiophile-grade toroidal transformer, a premium component chosen for its ability to offer huge power reserves, excellent bass response, depth and rich musical reproduction across the volume range. The integrated amp also offers a substantial extruded heatsink for excellent heat dissipation.

Polypropylene Capacitors: New low inductance resistors and polypropylene signal capacitors are used for superior audio performance.

ALPS " Black Box" Volume Encoder: The 351 A integrated amplifier uses a high end ALPS "Black Box: volume encoder that all of the signal goes through this at all times, so this is a very key component. Benefits include perfect channel balance at all volume levels and improved and stereo separation.

Protection Circuit: The 351A has full protection against misuse and possible faults. The overload and short-circuit protection systems continuously monitor the voltage, current, and temperature of the integrated amplifier's output devices for safe operation.

Controls

Volume: Use the front-panel rotary volume control to increase or decrease the level of the sound from the outputs of the amplifier. The volume control affects the level of the loudspeaker output and the headphone output. It does not affect the record output connections.

A/B Operation: The Cambridge Audio 351 A integrated amplifier lets you play A speakers only, B speakers only, or A and B speakers together.

Direct: This control gives the audio signal a more direct path to the power amplifier stage of your amplifier, bypassing the bass and treble control circuits for the purest possible sound quality.

Bass and Treble: The 351 A integrated amplifier has independent Bass (20Hz) and Treble (20kHz) controls which can be adjusted from +/-7.5dB. The Bass and Treble controls only effect the speaker outputs; they do not effect the record outputs.

Balance: This control allows you to adjust the relative output levels of the left and right speaker channels. The Balance control only effects the speaker outputs; it does not effect the record outputs.

IR Remote Control: The 351 A is supplied with an Azur Navigator IR remote control that operates both this amplifier and Cambridge Audio Azur-series CD players. The Azur 351 AC Navigator remote control can also control the basic functions of Apple devices, such as Apple TV and Apple's iPod/iPhone/iPad when docked in a Cambridge Audio or Apple dock (sold separately). The remote operates off of three "AAA" batteries (supplied).

Connections

Analog Audio Inputs: The Cambridge Audio 351 A integrated amplifier is fitted with five pair of gold-plated analog audio inputs (RCA) to connect your external audio sources; such as your Blu-ray/DVD player, AM/FM tuner, CD/SACD player, or Network Player. The 351 A integrated amp is not equipped with digital inputs/outputs or video inputs/outputs. There is also no Phono input.

Front-Panel Aux Input: The Cambridge Audio 351 A integrated amplifier features a front-panel Auxiliary (3.5mm) input to connect your portable MP3 player or other portable audio device.

Record Outputs: The 351A integrated amplifier features a pair of gold-plated analog audio record outputs (RCA) that can be connected to a CD recorder, MiniDisc recorder, or tape recorder.

USB Port: The 351 A integrated amplifier is fitted with a rear-panel USB (type-B) full-speed 1.1 port allowing USB audio streaming from your Windows PC (XP, Vista, 7) or Mac computer (Mac OSX 10.5 or higher). The USB port supports 16-bit/32kHz, 44.1kHz, or 48kHz audio.

A-B Speaker Terminals: The Cambridge Audio 351 A integrated amplifier is equipped with two sets of gold-plated, binding-post speaker terminals (labeled A and B). The use of A and B speaker terminals allow you to hook up speakers in another room. When using two pairs of speaker, use only speakers with a minimum nominal impedance of 8 ohms.

Headphone Output: The 351 A integrated amplifier offers a front-panel 1/4" headphone output to connect a set of headphones for private listening. When headphones are connected, the output to both A/B loudspeakers is muted. Use headphones with an impedance of between 32 and 600 ohms.

AC Power Cord: The Cambridge Audio 351 A operates off of standard household AC current using the supplied detachable 6' AC power cord.

Add-On Devices

Azur Series CD Player: The Cambridge Audio Azur 351 C Compact Disc Player (779351CB, sold separately) is the perfect companion to the 351 A integrated amplifier.

DacMagic: Get even better sound from your computer's stored music and Internet radio, as well as add optical/coaxial digital inputs to the 351 A integrated amplifier, with a Cambridge Audio DacMagic external digital-to-analog converter (779DACMPLB, sold separately).

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Customer Q&A

1 question already asked

Q
Can I connect a subwoofer?
mirtala  Jul 28, 2015
3 answers
A
I have need used it yet but I don't think it has a subwoofer output.You should go to crutchfield or Cambridge audio's website!
reggie  Jul 30, 2015
A
There is no subwoofer connection
paul  Jul 29, 2015
A
Absolutely. This is one of my proudest piece of equipment.
jeeran  Jul 29, 2015

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