Specifications

HEADPHONE I ml [}(]@@
AMPLIFIER LrI1U
PROBLEMS?
Basic problem-solving with an amplifier is similar to troubleshooting other electrical or electronic equipment.
Always check the most obvious possible causes first, such as the following examples:
Problem
Probable Cause Remedy
No power
Mains power supply is not fully inserted
Plug in securely
into mains socket
Mains power supply lead is not
fUlly
inserted into rear socket
No sound Wrong connections between input
Check audio input
lead
sources and the unit connections
Sound is not precise, lacking in Headphone(s) connector plug not fully Check plug
is inserted fully and
bass and stereo image pushed
in securely
Lead fault
in headphones Check phones
on Headphone
output of a different unit
Hum Audio connector plug not
fUlly pushed in Insert plug securely
Cable Fault Check cable is connected at both
Unsuitable Cable
ends.
(e.g. cable grounds not connected)
N.B. some esoteric cables have
internal wiring intentionally
disconnected/modified. For
best
results
on all inputs analogue AND
digital, please use good quality
screened coax; signal and screen
directly connected both ends.
No audio output, or too low
Incorrect or missing connections Check connections and make sure
level output
USB Driver not selected (PC or MAC)
they are secure.
See
p.e PC users or MAC users
section
No audio output from USB USB Cable not connected Check connections and make sure
input
USB Driver not selected (PC or MAC)
they are secure.
See P.8 PC users
or Mac users
section
Not detected when connected
USB Cable faulty Check and replace cable
to USB
USB not working/enabled on computer Check USB port functions with
Correct USB drivers not installed
another device.
(can happen particularly with factory-
Please check with the computer
preinstalled Windows operating
manufacturer. Enquire about USB
systems)
driver or update.
Dropouts
in sound (USB input) Shared USB port with another device Avoid sharing the USB port with
Computer busy with another application
other devices, if possible.
Computer low
on resources
At times an application (program)
may intervene, sometimes invisibly
e.g. a virus scanner. When this
happens. computer resources are
temporarily used up. and playback
may suffer. This is not a fault. Try
running
fewer
applications if
possible.
If none of these actions affect a cure, please contact the dealer, or an authorised Musical Fidelity service agent.
Never open the case of the unit, as this will invalidate the guarantee.
M1 HPA issue 2
MUSICAL FIDELrTY
Page 9 of 11