CHORD Elecronics DAVE Headphone Amplifier User Manual
- June 7, 2024
- chord
Table of Contents
Elecronics DAVE Headphone Amplifier
Chord Electronics Product Communication | English
DAVE Manual –
The Pumphouse, Farleigh Lane, East Farleigh, Kent, ME16 9NB, Great Britain.
+44 (0) 1622 721444 info@chordelectronics.co.uk chordelectronics.co.uk
V.1.2
Chord Electronics DAVE | Manual _
Contents
0.0
1.0 Safety instructions
1.1 Introduction 1.2 Protection against liquids & heat 1.3 Dismantling & radio
frequency interference 1.4 Connecting your equipment
03
2.0 Warranty
08
04
2.1 Warranty period & registering
09
05
your purchase
06
2.2 Making a claim & warranty exclusions
10
07
3.0 Getting to know DAVE
3.1 Getting to know DAVE 3.2 The front panel 3.4 The rear panel 3.5 The remote
control
11
4.0 Setting up DAVE
16
12
4.1 Placement
17
13
4.2 Connecting your source to
18
14 15
DAVE 4.3 Connecting a BLU MK II or
Hugo M Scaler to DAVE
19
4.4 Connecting a preamplifier/
amplifier to DAVE
20
4.5 Powering DAVE
21
5.0 How to navigate the menus
22
6.0 Playback modes
25
5.1 The screen & navigating the menu
23
6.1 Playback modes
26
5.2 Sample rate
24
6.2 Headphone mode
27
6.3 Preamplification mode
28
6.4 DAC mode
29
7.0 Playback modes
30
7.1 DSD and PCM mode
31
7.2 Crossfeed
32
7.3 Settings memory & galvanic isolation 33
7.4 Display messages
34
0.0 Contents
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Chord Electronics DAVE | Manual _
Safety instructions
1.0
1.1 Introduction 1.2 Protection against liquids & heat 1.3 Dismantling & radio frequency interference 1.4 Connecting your equipment
1.0 Safety instructions
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Chord Electronics DAVE | Manual _
Introduction
1.1 Introduction 1.2 Protection against
liquids & heat
1.3 Dismantling & radio frequency interference
1.4 Connecting your equipment
1.1
DAVE is an incredibly powerful and versatile digital-to-analogue convertor
preamplifier and headphone amplifier.
Before operation, we strongly advise you read this user manual thoroughly.
We also recommend that you store this user manual, along with your original
receipt of purchase, in a safe place should you require assistance in the
future.
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Chord Electronics DAVE | Manual _
Protection against liquids & heat
1.1 Introduction 1.2 Protection against
liquids & heat
1.3 Dismantling & radio frequency interference
1.4 Connecting your equipment
1.2
DAVE is not protected against liquids of any kind. Never place containers of
liquid on DAVE. Never allow DAVE to come into contact with moisture or
liquids; doing so could result in electrocution or damage to DAVE’s internal
circuitry.
Be aware that liquids, including water that has dried, can leave minerals that
can affect the PCB and other components, which could eventually lead to
oxidisation and short-circuiting.
If DAVE comes into contact with moisture or liquids, immediately disconnect
from the power supply and connected equipment, and contact Chord Electronics
for further advice.
DAVE has internal thermal protection which will shut down the unit in the
event of excessive temperatures being reached. Never operate DAVE near sources
of heat or naked flames as this will decrease the lifespan of the internal
components.
It is advised that you do not operate DAVE in an area of direct sunlight or on
top of significant heat-producing devices.
Please be aware that it is entirely normal for DAVE to become warm during use.
If you are concerned about the temperatures, please switch the device off or
consider a different placement.
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Chord Electronics DAVE | Manual _
Dismantling & radio
1.3
frequency interference
1.1 Introduction 1.2 Protection against
liquids & heat
1.3 Dismantling & radio frequency interference
1.4 Connecting your equipment
There are no userserviceable components within DAVE or its power supply.
Dangerous voltages/ currents exist within DAVE and its power supply, posing a
severe risk of electrocution and/or fire.
Never attempt to open, dismantle or apply internal thirdparty devices to it or
insert anything other than the listed interconnects or headphone adapters
within this user manual.
If DAVE develops a fault or the casework becomes damaged, immediately
disconnect from the power supply and connected equipment, and contact Chord
Electronics for further advice.
With a thick, solid aluminium chassis, DAVE’s casework largely protects the
sensitive internal circuitry from radio frequency interference. However, for
optimal performance, it is recommended that the following points are observed:
1. Consider placing DAVE away from wireless routers.
2. Separate DAVE from amplifiers using toroidal transformers.
3. Operate mobile phones at a distance to avoid interference.
Although the unit is largely shielded, it can generate radio frequency interference that may have an effect on analogue radio and television reception. Please consider moving DAVE to a different location should this happen.
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Chord Electronics DAVE | Manual _
1.1 Introduction 1.2 Protection against
liquids & heat
1.3 Dismantling & radio frequency interference
1.4 Connecting your equipment
Connecting your equipment
1.4
Before connecting DAVE to any third-party equipment, consult the manufacturer’s user guide to confirm compatibility.
Do not disconnect DAVE from the power cable without first switching the unit off to avoid any damage.
When connecting DAVE to any equipment, make sure that all devices are off, including DAVE.
Once connected, switch all equipment on starting with the source and ending with the amplification.
Initially, operate DAVE on its lowest volume setting, gently increasing to a comfortable listening level.
Never operate DAVE at excessive volume levels; permanent hearing damage and/or loss can occur.
DAVE does not have internal batteries and, therefore, must be permanently connected to a source of power.
The included 10-amp IEC power cable plugs into DAVE.
Never disconnect the power cable during operation. Only disconnect when DAVE is off. If the power cable is disconnected during operation, there is a risk of damage to connected equipment.
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Chord Electronics DAVE | Manual _
Warranty
2.0
2.1 Warranty period & registering your purchase 2.2 Making a claim & warranty
exclusions
2.0 Warranty
8 // 35
Chord Electronics DAVE | Manual _
Warranty period & registering
2.1
your purchase
2.1 Warranty period & registering 2.2 Making a claim & warranty
your purchase
exclusions
At point of sale, Chord Electronics Ltd. provides DAVE with a comprehensive
five-year warranty which covers defects in materials and workmanship through
fair wear and tear. The warranty will be void if any other PSU other than that
supplied is used.
The warranty is transferable with proof of purchase, however, warranty on ex-demonstration units begins from the retailer`s date of purchase.
Please use the form below to record the details of your purchase in the event that these are required at a later date. We further advise that all purchases are registered with Chord Electronics at: chordelectronics. co.uk/register- product/
RETAILER: PURCHASE PRICE: UNIT COLOUR: DATE OF PURCHASE: TRANSACTION ID:
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Chord Electronics DAVE | Manual _
2.1 Warranty period & registering 2.2 Making a claim & warranty
your purchase
exclusions
Making a claim
2.2
& warranty exclusions
In the unlikely event of a claim, your first point of contact should be your
supplying dealer. If this is not possible, you must provide Chord Electronics
with the details of the claim, including your original proof of purchase and
serial number, in order to validate the nature of the repair.
Upon receipt, Chord Electronics will make an assessment within 30 days and
provide a reasonable solution.
WARRANTY EXCLUSIONS: The warranty does not cover connected equipment, personal
injury or development natural patina of the metalwork and will be null and
void if the following is applied: wilful neglect; modification or tampering of
the product; improper use of the product; acts of God; damage caused by a
connected device; mechanical shock; fire or application of excessive heat or
repair/modification by a non-
authorised third-party vendor.
All warranty repairs must be carried out by Chord Electronics or an approved service centre, to guarantee the quality and safety of the repair.
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Chord Electronics DAVE | Manual _
Getting to know DAVE
3.0
3.1 Getting to know DAVE 3.2 The front panel 3.3 The top panel 3.4 The rear
panel 3.5 The remote control
3.0 Getting to know DAVE
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Chord Electronics DAVE | Manual _
3.1 Getting to know DAVE 3.2 The front panel
3.3 The top panel 3.4 The rear panel 3.5 The remote control
Getting to know DAVE
3.1
DAVE is an extraordinarily powerful leading-edge DAC/ preamplifier/headphone
amplifier, featuring multi-awardwinning FPGA technology.
To get the very best out of the device for many years to come, we recommend
familiarising yourself with this user manual.
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Chord Electronics DAVE | Manual _
The front panel
3.1 Getting to know DAVE 3.2 The front panel
3.3 The top panel 3.4 The rear panel 3.5 The remote control
3.2
Whilst an IR remote control is supplied, the front panel of DAVE is the main user interface and can entirely control all userconfigurable options, inputs and volume.
DAVE features a single headphone output available on the front of the device. This can accommodate headphones up to 800 without the need for an additional headphone amplifier.
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IR remote control receiver window
Volume dial and confirmation button
Up through menu
Cycle through menu options
LCD screen
Down through
Cycle through menu options
6.35mm headphone jack
Chord Electronics DAVE | Manual _
The rear panel
3.1 Getting to know DAVE 3.2 The front panel
3.3 The top panel 3.4 The rear panel 3.5 The remote control
3.4
The rear panel offers a comprehensive connectivity suite, featuring both
standard connections and those which are used with other Chord Electronics
devices.
When installing cables, you must make sure that they securely click into
place, especially the optical input.
BNC 2 coax digital input
USB digital input
AES balanced XLR digital input
BNC 4 coax digital input
4x DX digital output (for future product)
Right unbalanced RCA output
Left unbalanced RCA output
Left XLR balanced analogue output
BNC 1 coax digital input
Right XLR balanced analogue output
Optical 1 digital input
Optical 2 digital input
BNC 3 coax digital input
10A IEC AC inlet
WARNING: Do not use any other power supply other than that supplied. Doing so
will invalidate your warranty.
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Chord Electronics DAVE | Manual _
The remote control
3.1 Getting to know DAVE 3.2 The front panel
3.3 The top panel 3.4 The rear panel 3.5 The remote control
3.5
For convenience, a branded infra-red remote control is included with DAVE.
The remote will operate up to a distance of 10 metres (with clear line-of-
sight) to the infra-red receiver within DAVE, which is located above the LCD
screen.
For best operation, do not operate DAVE within a cabinet or place other
materials/products on top of the device.
On/off
Activate menu
Increase volume Cycle through inputs and
menu
Menu
Mute
Vol+
Vol –
Mute playback
Cycle though inputs and menu Decrease volume
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NOTE: Please only insert AAA batteries into the IR remote control and observe the correct orientation as indicated. Failure to do so could result in non- operation or battery leakage.
Chord Electronics DAVE | Manual _
Setting up DAVE
4.0
4.1 Placement 4.2 Connecting your source to DAVE 4.3 Connecting a BLU MK II or
Hugo M Scaler to DAVE 4.4 Connecting a preamplifier/amplifier to DAVE 4.5
Powering DAVE
4.0 Setting up DAVE
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Chord Electronics DAVE | Manual _
Placement
4.1
4.1 Placement 4.2 Connecting your source to
DAVE 4.3 Connecting a BLU MK II or
Hugo M Scaler to DAVE
4.4 Connecting a preamplifier/ amplifier to DAVE
4.5 Powering DAVE
Whilst DAVE will operate normally on top of a rack or side table, it is
recommended that the device is allowed to `breathe’.
Allocating 10cm of space around the device to convection-cool during operation
is advised.
As the infra-red remote control requires a direct line of sight to the viewing
portal, avoid placing objects on top of DAVE or putting it within enclosures.
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Chord Electronics DAVE | Manual _
Connecting your source to
4.2
DAVE
4.1 Placement 4.2 Connecting your source to
DAVE 4.3 Connecting a BLU MK II or
Hugo M Scaler to DAVE
4.4 Connecting a preamplifier/ amplifier to DAVE
4.5 Powering DAVE
DAVE has a selection of different inputs and you can connect several sources
at once if you wish.
Please note that if you are using the USB input with a Mac/Linux device, you
will not need a driver, but if you are connecting a Windows device, it will
need a driver from the DAVE section of our website:
chordelectronics.co.uk/product/ dave
To set up your system:
- First, you must ensure that DAVE and any connecting equipment, is turned off.
- Locate the inputs on the back of the unit shown below.
- Select the correct outputs from your source device and insert the cables into the input ports on the DAVE.
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Input
Chord Electronics DAVE | Manual _
Connecting a BLU MK II or
4.3
Hugo M Scaler to DAVE
4.1 Placement 4.2 Connecting your source to
DAVE 4.3 Connecting a BLU MK II or
Hugo M Scaler to DAVE
4.4 Connecting a preamplifier/ amplifier to DAVE
4.5 Powering DAVE
If you intend to use BLU MK II or Hugo M Scaler with DAVE, you should use the
dual BNC cables provided to connect the two devices. You must also connect
your source inputs to the BLU MKII or M Scaler and not DAVE.
Using the dual BNC cables;
-
Connect the outputs of BLU MKII or Hugo M Scaler to the dual BNC inputs on DAVE. Please pay close attention to the numbering on the units.
-
Ensure the cables click into the connectors securely.
-
Once connected, please read the manuals for either BLU Mk II or Hugo M scaler to set up. Also ensure you have downloaded the drivers for BLU MK II or Hugo M Scaler from our website.
chordelectronics.co.uk/ product/
S/PDIF DUAL BNC OUT
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Chord Electronics DAVE | Manual _
Connecting a preamplifier/
4.4
amplifier to DAVE
4.1 Placement 4.2 Connecting your source to
DAVE 4.3 Connecting a BLU MK II or
Hugo M Scaler to DAVE
4.4 Connecting a preamplifier/ amplifier to DAVE
4.5 Powering DAVE
To connect DAVE to a preamp, integrated or power amp, you should connect the outputs of DAVE to the inputs of your preamp, integrated or power amp;
- Locate the outputs on the back of the unit shown below.
- Paying close attention to the left and right channels, insert the cables in to DAVE.
- Ensure the cables click into the connectors securely.
WARNING: Read section 6 before initiating playback.
Outputs
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Chord Electronics DAVE | Manual _
Powering DAVE
4.5
4.1 Placement 4.2 Connecting your source to
DAVE 4.3 Connecting a BLU MK II or
Hugo M Scaler to DAVE
4.4 Connecting a preamplifier/ amplifier to DAVE
4.5 Powering DAVE
POWER ON SEQUENCE: Once set up with cables, use the supplied power cable to
connect DAVE. To turn DAVE on, locate the large power switch on the back of
the device.
It may take 15 seconds for DAVE to complete a safety check. During this stage,
music playback will not be possible and mute will be displayed.
During this period, do not initiate music playback.
NOTE: DAVE can be put into standby mode with the off button on the remote.
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Chord Electronics DAVE | Manual _
How to navigate the menus
5.0
5.1 The screen & navigating the menu 5.2 Sample rate
5.0 How to navigate the menus
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Chord Electronics DAVE | Manual _
5.1 The screen & navigating the menu
5.2 Sample rate
The screen & navigating
5.1
the menu
DISPLAY SETTING AND THE SCREEN GOING BLACK: When you make a new selection via
the menu, DAVE needs to write this to its internal memory. This will cause the
display to temporarily show a black screen.
For darker environments, bright displays may present a challenge, therefore,
DAVE offers four different menu display settings. Find this listed under
Display in the menu.
THE MENU: To advance your way through the menu, press the four buttons
surrounding the volume dial.
Use the up and down buttons to cycle through menu options on the screen. Using
the left and right buttons, you can change the options in the sub-menus.
Turn the dial to increase or lower the volume. Press the volume dial to mute/unmute DAVE
Up through menu
Left through menu *
Right through menu *
Down through menu
- Hold down these buttons to change between modes
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Chord Electronics DAVE | Manual _
Sample rate
5.1 The screen & navigating the menu
5.2 Sample rate
5.2
SAMPLE RATE INDICATOR: During playback, the sample rate will be indicated on
the screen.
DAVE is capable of playing files up to 768 kHz/32-bit and DSD 512. See the
table below for full details:
USB*
BNC/Coax input
44.1 kHz to 768 kHz 16-bit to 32-bit DSD 64 to DSD 256 (DoP interface),
16-bit to 32-bit – DSD 64 to DSD 512 (native*** USB interface)
44.1 kHz to 384 kHz 16-bit to 24-bit – DSD 128 via DoP
Optical input
44.1 kHz to 96 kHz 16-bit to 24-bit
AES input 44.1 kHz to 96 kHz 16-bit to 24-bit
Dual BNC** Special operation DBNC: 88.2 kHz to 768 kHz 24-bit
USB is natively compatible with all Mac OS X and Linux machines without the use of drivers. Windows machines may require a driver, available on the Chord Electronics website.
Dual BNC is reserved for special operation with Chord Electronics’
partnering products. Dual BNC does not appear within the menu by default, it
will only appear when successfully connected to a partnering product.
Native DSD playback is only available using ASIO driver on Windows.
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Chord Electronics DAVE | Manual _
Playback modes
6.0
6.1 Playback modes 6.2 Headphone mode 6.3 Preamplification mode 6.4 DAC mode
6.0 Playback modes
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Chord Electronics DAVE | Manual _
Playback modes
6.1 Playback modes 6.2 Headphone mode
6.3 Preamplification mode 6.4 DAC mode
6.1
DAVE has three userselectable modes tailored to the intended operation of the device: Headphone mode, Preamplification mode and DAC mode. Each mode will be displayed at the bottom of the screen on the right-hand side.
When headphones are disconnected, it is possible to navigate between Preamplification mode or DAC mode by holding down the right and left menu buttons.
When headphones are connected to DAVE, for protection, the device will enter
Headphone mode, where only the headphone outputs are enabled. It will not be
possible to manually deselect this: only removing the headphones will
disengage the mode.
Volume plus Phase Pos L ON Crossfeed 0 D DAVE Headphone
Volume plus Phase Pos L ON Display 1 D DAVE DAC mode
Volume plus Phase Pos L ON Display 1 D DAVE Digital pre
Headphone mode
DAC mode
Preamplification mode
WARNING: For the protection of your hearing and equipment, please do not
navigate between the Preamp and DAC without disconnecting DAVE from any other
device or a source of music.
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Chord Electronics DAVE | Manual _
Headphone mode
6.1 Playback modes 6.2 Headphone mode
6.3 Preamplification mode 6.4 DAC mode
6.2
When DAVE detects that headphones have been inserted into the 6.35mm
frontpanel connector, it will enter Headphone mode, which is for headphone-
listening only. DAVE will identify the headphones and display Headphone in the
bottom right-hand side of the screen.
When you insert a headphone jack, DAVE automatically mutes the rear outputs
and the volume control will only work on the headphone output. When you remove
the headphone jack, DAVE unmutes the rear outputs, the volume will revert back
to the volume last used while in `Digital pre mode’ or will revert to line
level if it was in DAC mode
Volume plus Phase Pos L ON Crossfeed 0 D DAVE Headphone
WARNING For your protection, when headphones are connected to DAVE you will be
unable to manually exit Headphone mode until they are disconnected.
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Chord Electronics DAVE | Manual _
6.1 Playback modes 6.2 Headphone mode
6.3 Preamplification mode 6.4 DAC mode
Preamplification mode
6.3
Providing headphones are not connected to DAVE, Preamplification mode can be
manually engaged. Select Preamplification mode by holding down the right and
left buttons for two seconds.
Preamplification mode deploys DAVE’s digital preamplifier capabilities,
enabling the volume to be attenuated to prevent clipping or to feed directly
into a power amplifier or active speaker.
Volume plus Phase Pos L ON Display 1 D DAVE Digital pre
WARNING: For the protection of your hearing and equipment, please do not navigate between the Preamp and DAC modes or have music playing without disconnecting DAVE from any other device or a source
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Chord Electronics DAVE | Manual _
DAC mode
6.1 Playback modes 6.2 Headphone mode
6.3 Preamplification mode 6.4 DAC mode
6.4
With headphones disconnected, DAC mode is selectable. Select DAC mode by
holding down the right and left buttons for two seconds.
As the output level is fixed within DAC mode, the volume dial (and remote
control volume) will no longer respond.
DAC mode can be employed when used within a conventional audio system, where
an external preamplifier is present. When this mode is selected, a 3 V
unbalanced and 6 V balanced RMS line-level signal will be present.
Before connecting DAVE to other components, for example, a preamplifier or
amplifier, please consult the respective user manual, as they may require a
signal less than 2.5 V RMS to provide optimum performance. If you require a
line-level signal, less than 2.5 V, please use Preamplification mode to
attenuate the signal as appropriate.
Volume plus Phase Pos L ON Display 1 D DAVE DAC mode
When changing from DAC/ Preamp mode, please give DAVE time to switch between
modes. Stop all playback at this time.
NOTE: As the output level is fixed on DAC mode, the volume wheel will become
unresponsive.
WARNING: Never connect any device incapable of attenuating a line level signal
to DAVE in DAC mode. Doing so could result in permanent damage to any
connected equipment, along with your hearing.
WARNING: For the protection of your hearing and equipment, please do not
navigate between the Preamp and DAC modes or have music playing without
disconnecting DAVE from any other device or a source
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Chord Electronics DAVE | Manual _
Special features
7.0
7.1 DSD and PCM mode 7.2 Crossfeed 7.3 Settings memory &
galvanic isolation 7.4 Display messages
7.0 Special features
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Chord Electronics DAVE | Manual _
DSD and PCM mode
7.1 DSD and PCM mode 7.2 Crossfeed
7.3 Settings memory & galvanic isolation
7.4 Display messages
7.1
DAVE has two decoding options specifically tailored for PCM or DSD playback.
You can play both PCM and DSD music using either mode, but each one is
specifically optimised for a particular format. In order to cycle between each
mode please highlight the segment, typically by pressing the down button and
then either press the left or right button for two seconds.
PCM+ – Use this for PCM playback up to 768 KHz. DSD playback up to DSD256 is
also supported, but it is decimated and not optimised in this mode.
DSD+ – Use this for DSD64, 128 and 256 (single, dual and quad-speed) playback.
There is no decimation. PCM can still be played and this mode is ideal for
streaming video with audio as it has a lower delay.
Please note, after either decoding function, DAVE will mute for approx 20 seconds while the new program activates.
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Chord Electronics DAVE | Manual _
Crossfeed
7.1 DSD and PCM mode 7.2 Crossfeed
7.3 Settings memory & galvanic isolation
7.4 Display messages
7.2
Crossfeed is a form of digital processing that blends the left and right
channels of a stereo recording to achieve a speaker-like presentation during
headphone listening.
Crossfeed affects all outputs on DAVE so when finished with using headphones,
this feature will need to be turned off. Otherwise crossfeed will ocur with
the RCA and XLR outputs.
DAVE has four available modes of crossfeed, shown as Crossfeed on the display:
Crossfeed 0: No crossfeed. Crossfeed 1: Minimal crossfeed. Crossfeed 2:
Moderate crossfeed. Crossfeed 3: Broad crossfeed.
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Chord Electronics DAVE | Manual _
Settings memory & galvanic isolation
7.1 DSD and PCM mode 7.2 Crossfeed
7.3 Settings memory & galvanic isolation
7.4 Display messages
7.3
SETTINGS MEMORY: DAVE remembers previous settings, including volume, even when powered down (or with the power supply removed). You do not have to perform any special actions.
GALVANIC ISOLATION: Galvanic isolation involves isolating the power rails of the data USB input, allowing for greater sonic performance. DAVE features a Class 2 Type-B USB input with this protection. Please ensure with you cable’s manufacturer, that your chosen USB cable is compatible with galvanic isolation connections.
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Chord Electronics DAVE | Manual _
Display messages
7.1 DSD and PCM mode 7.2 Crossfeed
7.3 Settings memory & galvanic isolation
7.4 Display messages
7.4
During use of DAVE, you may encounter a number of on-screen display messages. Please use the table below to discover their meanings.
PCM
Set to PCM mode
DSD
Set to DSD mode
Phase Neg Negative output phase
Phase Pos Positive output phase
Display 1-3 3 menu viewing options Display 4 Message mode – will turn off DAVE screen after 30 seconds
Positive and inverted phase is for system matching. Some products invert absolute phase so we give the option to match (or correct) your system phase using the phase option on DAVE. For Chord Electronics amplification you should select inverted phase for correct matching.
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References
- Chord Electronics - High-End Audio for Hi-Fi Enthusiasts & Professionals
- Chord Electronics - High-End Audio for Hi-Fi Enthusiasts & Professionals
- Products Archive - Chord Electronics Ltd
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