CHORD Anni Desktop Integrated Amplifier+ User Manual
- June 6, 2024
- chord
Table of Contents
Anni Manual
chordelectronics.co.uk
V.1
General operation and important information
Introduction
Anni is a next-generation ‘headphone amplifier+’ that complements the high
quality of our multi-award-winning Qutest DAC and Huei phono stage. We took a
different approach to the design and created a powerful headphone amplifier+
which belies its compact dimensions: Anni is also capable of driving
loudspeakers, regardless of size.
Accurately controlled across the entire audio bandwidth with extraordinary
low-frequency capability, Anni’s protection circuitry allows for the delivery
of enormous peak current outputs for its size whilst avoiding overdrive; it
does this differently to other amplifiers on a half-cycle by half-cycle basis.
If the output of the amp is being over-driven, Anni will detect it and
collapse the waveform on each over-driven, half-cycle. So not clipping like
other amplifiers but instead going from a completely undistorted waveform to
one that is missing half- cycles i.e. it becomes heavily distorted suddenly
until the level is slightly reduced. Then the music signal will totally
recover without any harm occurring to the amplifier or speaker, with the music
being once again undistorted.
Connections and controls
Rear
Front
Connections and controls
Power connection
Anni is supplied with an external power supply and has been designed to be
permanently connected to a power source. Connect the included 15 V supply to
Anni. If hum occurs, use the ground terminal to connect to an available earth
point. Always set the volume to zero before playback and before
connecting/removing headphones.
Inputs
Connect to any line-level source component using a standard RCA cable.
Connecting to loudspeakers
Connect to the loudspeaker using a 4 mm banana-plug-terminated speaker cable, observing polarity.
Connecting to headphones
Using the front two outputs, connect headphones with 6.35 mm (1/4inch) or 3.5 mm terminations to Anni, and the output will automatically be selected. The volume controls both headphone outputs simultaneously: they are not independently controllable.
Power on/off
With connections successfully made (as per section 2.0), and volume set to
zero, press the power button. The button will display green, before settling
on cyan. Pressing the power button again puts the unit on standby; the button
will display red.
Note : if either of the headphone outputs is connected, the power button
will display green to show the speaker output has been disconnected. If the
headphones are then removed, the power button will revert to cyan and the
speaker output will become active.
Select an input
Select input 1 or 2 by pushing the volume knob sequentially. Input 1 is
indicated by a blue LED ring, input 2 is red.
Amplifier operation
With connections successfully made and with the volume set to zero, select the
input, press play on the chosen source, and adjust Anni’s volume accordingly
Headphone operation
Anni has both 6.35 mm (1/4 inch) and 3.5 mm headphone outputs, which can be
used both individually or simultaneously meaning two can listen.
With the volume set to zero, connect to one or both headphone outputs and
slowly increase the volume.
Note: if connecting headphones when music is already playing through the loudspeakers, a short delay will be experienced before the headphone output becomes active (to protect the amp). In addition, the low gain will be automatically selected. Removing the headphones (with speakers still connected) will revert the output signal back to the speakers.
Operation
Gain
Anni benefits from a two-stage (high and low) gain function on the loudspeaker
outputs (only) to suit a wide range of partnering speakers.
Press the gain button to alternate between low (blue) and high (red) gain
modes, allowing 3 seconds to switch between modes.
****When using either of the headphone outputs, Anni is automatically switched to low gain mode. If when inserting headphones Anni was previously set to high gain (red) the gain sphere will show purple, before reverting back to red when the headphones are removed. If the low gain (blue) was previously selected, the gain sphere will remain blue and continue to display blue when the headphones are disconnected.
****If using Anni with Qutest, ensure Qutest’s output voltage is set no higher than 2 V. The Qutest manual describes how to set the output voltage.
Placement
Anni benefits from extensive casework ventilation and a cooling fan for
demanding environments. Always ensure Anni is used in a well-ventilated
setting, away from direct sunlight and heat sources, and has sufficient space
around the unit.
Chord Electronics’ Qutest Stand System (available separately) has been
designed to perfectly house Anni. Otherwise, care should be taken not to stack
other units on Anni.
Support
If you need support, in the first instance, please contact your supplying
retailer who will be best placed to assist you. If you need additional help
beyond that of your retailer, please visit our support page: chord
electronics.
co.uk/get-support
Specifications
| Power output | 10 W 8 ohms |
|---|---|
| THD | 0.02% |
| Signal to noise | -92 dB |
| Noise floor | -110 dB |
| Frequency response | 5 Hz-60 kHz |
Chord Electronics
Product Communication
The Pumphouse, Farleigh Lane,
East Farleigh, Maidstone
ME16 9NB United Kingdon
info@chordelectronics.co.uk
chordelectronics.co.uk
References
Read User Manual Online (PDF format)
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