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Indigo Digital Preamplifier
Thank you for buying a Chord Electronics product.
Before you start to enjoy your preamplifier, please take a couple of minutes to read how to connect your audio
equipment and how to maximise your listening experience.
Product Description
The Indigo is the very latest in our digital product development specifically designed to be the universal control
centre for both digital and analogue sources. It takes our most advanced technology and combines it into one
convenient full sized product. The Indigo is fully featured including a revolutionary digital iPod dock with wireless
radio link option. Using the Chord modified iPod (option) a true digital output can be obtained to feed directly into
our DAC circuitry. We have chosen to modify the iPod to gain this direct digital feed so that unlike other USB
based products it does not interfere with the control and operation of the iPod. If uncompressed music files are
used this can at last turn the iPod into a true high end music source. Using the supplied adapter digital music can
also be streamed wirelessly via digital radio link from a modified iPod anywhere in a room allowing for more
useful and convenient control from your armchair. For unmodified iProducts we are providing a standard high
quality A2DP radio dongle and this links directly to the Indigo’s A2DP receiver.
The digital heart of the Indigo uses the latest generation of field programmable gate array devices (FPGA) as
found in the QBD76. The FPGA handles the switching of SPDIF inputs, all digital SPDIF decoding, digital PLL,
RAM buffer controller, WTA filtering, and the 5
th
generation Pulse Array DAC. The improvements to the Pulse
Array DAC have been further complimented with improved power supply design and layout giving the very best
digital to analogue conversion.
Digital inputs include SPDIF, AES, optical, USB, iPod and of course our latest developments with Bluetooth
audio. Using our custom designed Bluetooth receiver we have been able to extract the digital audio information
and input this directly into our DAC technology. Unlike the low quality audio seen from other Bluetooth devices
this gives us much better performance and enables CD like transfer of music from the Bluetooth device. Using
your A2DP equipped mobile phone or computer you can connect wirelessly to the Indigo.
As well as supporting digital connectivity the conveniently situated iPod dock features the standard analogue
connection and charging for use with any iPod. If you have the USB input connected to a personal computer then
you can also sync and transfer music to the connected iPod. There is an inbuilt USB hub with two additional front
panel connectors so that further devices can be connected to your computer via the Indigo.
An analogue input is provided for non digital sources via balanced XLR or RCA phono connectors and there are
both direct line level and volume controlled analogue outputs. Using the line level output AV Bypass is possible.
Headphone connectivity is available with a low distortion, low noise headphone output jack socket easily
accessible on the front panel.
Control is via the front panel or remote control and the large front panel display gives clear indication of settings
and digital frequencies.
Inventory
As well as your Indigo and this user manual, you should also have received the following items.
1. System Remote Control including user manual
2. Power cord
3. Chord guarantee registration card
4. USB Cable
5. Bluetooth adapter
7. 2x Antennas ( Aerials )
8. Ipod and digital ipod adapter ( Optional )
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