UNPACKING
Your amplifier should reach you in a substantial protective carton. On unpacking please
examine the unit for signs of prior use or damage. Check that all the front panel controls
function mechanically. The following items should also be in the carton:-
(1) AC power lead with pre-molded IEC straight connector and plug.
(2) Owners registration card which should be completed and the bottom section removed
and returned to us.
INSTALLATION - IMPORTANT
There are two points that must be considered carefully when installing your amplifier.
1) Adequate ventilation.
2) Proximity to low level gain stages and magnetic tape recorders.
Because the A21SE is a pure class 'A' design a large amount of heat will be generated from
the amplifiers heatsinks, this is normal. It is VERY IMPORTANT that the amplifier must not be
confined in a space that will produce a build up or re-circulation of heated air. We
recommend a clearance of 10cm (four inches) either side and above the unit. This will allow
a free circulation of air when situated in an open-back cabinet. Never stand equipment on top
of the amplifier. The amplifier should be kept away from any heat sources such as direct
sunlight or radiators.
The amplifier should be switched off when not in use.
CONNECTING TO A MAINS SUPPLY
Before connecting your amplifier to a mains supply ensure that the mains voltage rating on
the inspection ticket and packing carton is the same as your countries supply. Connection to
the mains is via the AC cable supplied with your amplifier and connects to the mains input
socket at the back of the amplifier.
MAINS CABLES AND POWER SUPPLIES
We do not recommend the use of specialist mains blocks or power supplies as this can
degrade the sound quality and reduce the dynamic range of your amplifier.
SIGNAL CONNECTIONS
Always ensure that your amplifier is switched off before any connections are made to
associated equipment. We recommend that good quality cables and plugs are used with your
Sugden amplifier. Your retailer or Sugden Audio can advise you on cables that offer good
performance and match Sugden products.
L . T. V. S socket (Stage One No Longer Available)
This provides a Low Tension Voltage Supply for the Sugden A21SE Stage One phono
Amplifier. No other equipment should be connected to the L.T.V.S Socket.
The Stage One Phono Amplifier is a high quality, value for money design and has a single
input for both Moving Magnet and Moving Coil cartridges, with automatic impedance
matching.
The Stage Two Phono Amplifier is also now available, it is a more sophisticated design
catering for both MM and low output MC Cartridges. This is mains powered and split into two
boxes separating the gain stages from the regulated power supply.
Loudspeakers
Loudspeaker connections are made via the gold plated multi-way binding posts at the rear of
the amplifier these are marked R(right) and L(left) for identical connection to your
loudspeakers. Both left and right speakers have a positive (+) and negative (-) connection
which are also for identical connection to your loudspeakers. We recommend that
loudspeakers of 4 -16ohms impedance should be used with your amplifier.
If bi-wiring please follow the instructions supplied by the manufacturer of your loudspeaker
carefully, incorrect wiring can damage your amplifier or blow channel fuses.
