Remote control

The 640R is supplied with an Azur Navigator remote control. Insert the supplied AAA batteries to use. For full details of the various adjustment functions available from the remote, refer to the later sections of this manual.

Standby/On

Switches the unit between Standby mode and On.

Analog Direct

Directly selects a stereo analog input for the current source with no A/D conversion or DSP processing.

Stereo Modes

Selects Stereo or Stereo + Sub modes for Analog or Digital sources (digitally processed).

PLIIx/Neo/DSP

Selects from various matrix encoded surround processing modes for analog or digital sources (digitally processed).

DD EX/DTS ES

Selects digital surround processing modes for Digital sources only.

Dynamic

Press repeatedly to reach the desired dynamic compression range (Dolby Digital or DTS modes only).

Sub On/Off

Press to turn on/off the output of the subwoofer. Also, hold down and then press the volume up and down buttons to adjust the overall sub level if desired.

PTY (Program Type Search)

Press to search by program type when in Tuner mode. Refer to the ‘Operating instructions’ section of this manual for more information.

APS (Auto Program Search)

Hold down for 4 seconds to allocate and memorise radio stations automatically.

Display

Press to view the current source material and decoding mode. When listening to FM with RDS, press to cycle round various RDS information modes.

Stereo Mono

When listening to FM, press to alternate between stereo and mono modes.

Store

Press to store the current frequency when in Tuner mode.

Mode

Press to select Auto/Manual or Preset tuning when in Tuner mode.

Mute

Mutes the audio on the AV Receiver. Press again to cancel mute.

Volume

Increase or decrease the volume of the AV receiver output. Also used as up/down in the OSD setup menus.

Analog	Stereo	PL IIx
Direct	Modes	Neo/DSP
DD EX	Dynamic	Sub
DTS ES	Dynamic	On/Off
DTS ES		On/Off
PTY	APS	Display
Stereo	Store	Mode
Mono	Store	Mode
Mono

Vol

Enter

Vol

	Bass	7.1
	Treble	Direct
Audio In		Video In
Type		Type
Tuner	DVD	Video 1
AM/FM	DVD	Video 1
AM/FM
Video 2	Rec 1	Aux
CD		Rec 2

Tune / Left & Right

Press the right arrow to increase tuner frequency/change preset. Press the left arrow to decrease tuner frequency/change preset. Also used to scroll left/right in the OSD setup menus.

Enter

Used in the OSD setup menus.

On-Screen Display (OSD)

Press to turn on and off the on-screen set-up menus when connected to a monitor/screen via Composite, S-video or Component connections.

Bass/Treble

Press for bass/treble adjustment, using the Volume up/down buttons. Note: Bass/Treble is disabled in analog stereo direct and 7.1 direct modes.

7.1 Direct

Selects the 5.1/6.1/7.1 direct input.

Audio In Type

Switches the 640R between analog and digital inputs for the currently selected source.

Video In Type

Selects Composite video, S-Video or Component video as the analog video input type for the current source (Additionally HDMI can also be assigned in the OSD menu).

Tuner AM/FM, DVD, Video 1, Video 2, Rec 1, Aux, CD, Rec 2

Press the corresponding button to change the input source. Pressing the Tuner AM/FM button a second time toggles between AM and FM modes.

The above button descriptions are naturally brief. Please refer to the ‘Operating Instructions’ section of this manual for more information on the relevant functions implemented.

640Razur specifications

The Cambridge Audio 640R is a high-fidelity AV receiver that has gained recognition for its remarkable performance and sophisticated features. Engineered to deliver a premium audio experience, this receiver excels in both music and home theater applications.

One of the standout features of the 640R is its ability to handle a wide range of audio formats. With support for advanced surround sound formats such as Dolby TrueHD and DTS-HD Master Audio, the receiver is capable of producing high-definition audio that enhances the clarity and detail of films and music. The 640R also supports standard formats like Dolby Digital and DTS, making it highly versatile.

At the heart of the 640R is Cambridge Audio's proprietary components, including high-quality capacitors and resistors, designed to minimize noise and distortion. This ensures that the audio output remains clean and transparent, providing a true representation of the source material. The receiver offers a robust power output, ensuring effortless dynamic range and delivering impactful sound, whether it's a subtle dialogue or explosive action scenes.

Another key feature of the Cambridge Audio 640R is its extensive connectivity options. It boasts multiple HDMI inputs, allowing users to connect various devices such as Blu-ray players, gaming consoles, and streaming devices. Additionally, the receiver supports HDMI video scaling, enabling the upscaling of standard definition signals to 1080p, which enhances the viewing experience on high-definition screens.

The 640R also includes multiple analog and digital inputs, ensuring compatibility with legacy devices alongside modern technology. A dedicated preamp output allows for the addition of external amplifiers, enhancing the system's scalability for audiophiles looking to create a bespoke setup.

Moreover, the Cambridge Audio 640R features an intuitive user interface and remote control, making it user-friendly even for those new to home audio systems. The on-screen display simplifies the selection of sources and adjustment of settings, while the advanced configuration options allow for precise customizations.

In summary, the Cambridge Audio 640R stands out as an exceptional AV receiver, combining audiophile-grade components with modern features. With its powerful performance, advanced surround sound capabilities, and extensive connectivity, it caters to both music lovers and home theater enthusiasts, making it a compelling choice for anyone looking to enhance their audio experience.