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INSTALLATION

Valves Get Hot

Valve Amplifiers Work at High Voltages

Valves are Microphonic

Interconnects and Cables

Mains Earthing (Grounding)

Place the unit on a stable rigid surface with at least 1m (3ft) of free space above it. If you are using a

turntable, ensure that the tonearm / preampliﬁer combination is least 400mm away from the ampliﬁer

to minimize any hum conduction and ideally on a separate shelf. If you have to use the turntable and the

ampliﬁer on the same surface, place the turntable to the right of the ampliﬁer to maximize the distance

between the tonearm and the ampliﬁer.

Do not use this ampliﬁer in a conﬁned space or an enclosed cabinet!

Avoid placing the ampliﬁer in front of loudspeakers to avoid vibrations from the speaker drive units causing

microphonics in the ampliﬁer and degrading the sound.

If this is your ﬁrst valve ampliﬁer: please familiarise yourself with some important issues surrounding

the safe use of your ampliﬁer.

Valve power ampliﬁers generate a lot of heat even with no input so it is vital to ensure adequate ventilation

for your ampliﬁer.

Although the protective cages over the valves get hot they are very unlikely to cause a burn. For absolute

safety the units should be placed out of the reach of children and pets and away from heat-sensitive objects.

Valves require a high voltage to function. Do not open the case. Also ensure that nothing is poked, dropped

or poured into the ampliﬁer's case.

e environment should be dry and free from litter. Do not place magnetically or thermally sensitive

objects (i.e. credit cards or optical disc) close to the unit.

Because valves are constructed from ﬁne wires and tiny metal parts they can pick up external vibrations. If

you place the power ampliﬁer too close to speakers, direct sound at high volumes may vibrate the valves. 1

meter (3ft) to the side of each speaker should be considered a sensible minimum.

e signal inputs to the ampli er are via RCA phono connectors. As valve equipment works at high

impedances, the phono interconnects from source unit should be well screened and of low-noise, low-

capacitance construction. To minimize capacitance and other e ects, signal interconnectors should be kept

as short as possible.

Choose good quality loudspeaker cable designed for the purpose rather than general purpose 'zip' or 'bell'

inductance or capacitance cables as these can degrade the sound when using a valve output stages.

is ampli er requires connection to an earthed (grounded) mains supply. In your sound system, the

ampliﬁer should be the only device connected to mains ground to negate hum induced by ground loops.

For this reason we suggest that you avoid using interconnectors with separate ground wires. If any of your

other equipment is grounded a 'hum loop' may arise. If this happens please consult your dealer for

advice.