5
If you have verified the aforementioned situations, and your problem still persists, please contact your local
Fezz Audio dealer.
Make sure all cables are connected as described above. Set the amplifier volume knob to minimum. Power on (fig. 3) the
Equinox DAC. Select the signal source using the selector located on the front panel of the device. Make sure the digital source
is on and gradually increase the volume with the volume knob at your amplifier. The vacuum tube take about 1 minute to
warm up to desirable working conditions.
If your preamplifier does not work as it is supposed to, it is fairly easy to diagnose and remedy some of the common
malfunctions, by following procedures as outlined in this following.
TROUBLE-SHOOTING GUIDE
8
THE PROBLEM
PROBABLE RE A SON
SOLUTION
After turning the power
switch to the ON position, the
device does not switch on.
Sound distortion via USB
A blown fuse
Please exchange to faulty fuse to a new one (T500mA
for 230-240V / T1A for115V-120V),
within the fuse holder as depicted with index 2 on
page 4 of this user’s manual.
An improper connection of the
mains cable
Outdated USB Windows driver
Please check if the plugs of the mains cable are properly
inserted into the electrical mains socket and to the
socket as depicted with index 1 on page 4 of this user’s
manual.
For playback via USB, from a connected Windows PC,
specific driver software is required.
The required driver is available for download:
https://www.amanero.com/drivers/setup1068.zip
GET TING STARTED
6
VACUUM TUBE REPLACEMENT
7
Power down the equipment and unplug it from the electrical outlet. This step is crucial to prevent electric shock or damage
to the device. Vacuum tubes can become very hot during operation. Allow sufficient time for the tubes to cool down before
attempting to handle them.
Fezz Equnox DAC is equipped with one 12AU7/ECC82 vacuum tube. You can easily change the tube by gently pushing and
moving sideway plexiglass window at the top of the device. You can move it to the left side only. Carefully remove the vacuum
tube from its socket. Take the replacement tube and align the pins with the socket. Gently push the tube into the socket,
ensuring that each pin goes into its corresponding hole. Carefully double-check all connections to ensure that the new tube
is properly seated in the socket, and none of the pins are bent or misaligned. Once you’ve replaced the tube and confirmed
all connections, close the plexiglass window, power up the equipment and check for proper operation. If there are any issues,
double-check the tube placement and connections.
