INSTALLATION
M1 HPAP issue 1 Page 6 of 11
Introduction
Congratulations on the purchase of the new M1 HPAP. This unit will give top quality performance when used
as a top quality headphone amplifier, delivering the best performance possible from any source. It is also
designed to allow use as a single-input (two inputs, if the USB input is included) preamplifier.
Cleaning
Before cleaning the unit, switch off power at the mains switch and remove the mains plug from the wall socket.
Clean the cabinet and remote control unit using a moist cloth. Using solvents, white spirit or thinners is not
advised, as they could damage the surface finish.
Installation
Position the M1 HPAP on a stable, horizontal surface where there is no risk of it being knocked, or subjected to
vibration such as from loudspeakers.
Im
portant note:
In normal operation, the unit dissipates a quantity of power at all times, and it is important that it
is adequately ventilated. The M1 HPAP must be protected from humidity – if the unit is moved
from a cold place to a warm room, leave the unit for an hour or so to allow sufficient time for the
moisture to evaporate.
Please note: Musical Fidelity currently do not make any interconnecting cables, nor do we endorse any
particular manufacturer’s cables. If necessary, please refer the dealer who can advise on quality cables for any
particular setup.
Power Connections
The M1 HPAP is supplied with a standard IEC mains cable which plugs into the IEC socket at the back of the
unit
Output connections
RCA pre-outputs: Use good quality RCA phono audio cables (fully connected signal and ground), for optimum
signal transfer.
6.25mm 1 ¼” Jack headphone outputs: Use good quality headphones for absolute optimum sound quality.
Use either Jack socket to connect a pair of headphones, or use both Jack sockets for two pairs, if required.
Please note: different headphone types will almost certainly have quite different output levels and possible
sonic characteristic differences when directly compared. This is due to each headphone’s individual design.
Volume control settings may vary appreciably, depending on the headphone’s sensitivity, original source
material recording levels, and user listening comfort level.
Input connections
LINE (RCA) inputs: Connect line level source to LINE input sockets. Use good quality RCA phono audio cables
(fully connected signal and ground) for optimum signal transfer.
USB input: Connect computer or similar USB “host” source to USB input socket. Use a good quality USB 1.1 or
2.0 “A to B” type cable, for optimum signal transfer.
(13 pages)
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