Manley Neo-Classic 300B RC Preamplifier 2008 - present - Manual (Page 6)

FRONT PANEL
AUX
TAPE
CD
TUNER
VIDEO
HEADPHONES
VOLUME
A B C D E F
A) INPUT SELECT - 5 Position switch for input selection. Each input is electrically identical.
The RECORD OUT directly follows this switch. There is no buffer amp to isolate the effects
of loading and cable capacitance so we recommend disconnecting any interconnect cables from
the RECORD OUT if you are not recording.
B & C) - HEADPHONE JACKS - Standard 1/4” stereo headphone jacks. The
HEADPHONE IMPEDANCE SWITCH (on top of the unit) should be set for the range that
best matches your headphones. The maximum power output primarily depends on the actual
headphone impedance. Typically the preamp can deliver 1 watt (10 volts RMS ) into 100 ohms
and 1 watt (25 volts RMS) into 600 ohms. These outputs are transformer coupled for highest
possible isolation from shock hazards, cable shorts, and other potential problems.
*Note: To use these headphone outputs, you must have the OUTPUT switch (on top of the
unit) set to “TRANSFORMER”. They will not work if that switch is set to “DIRECT”.
D) VOLUME - Audiophile-grade motorized ALPS pot, controllable with the included REMO-
RA Remote Control.
E) BACKLIT PANEL - This is the power indicator. When it is lit-up, your unit is on. When it
is not lit-up, your unit is off.
F) POWER SWITCH - Self explanatory. Because tubes require some time to warm up there
is about 10 seconds of silence followed by “not-so-good sound” before “wow”. The best way to
power up the system is sources ( CD, turntable, etc) first, then this preamp, then after a 30 sec-
ond wait - turn on the amplifiers. Wait a minute or so - then play tunes. This allows everything
to warm up. Some people hear a difference after an hour or two but it depends on the equip-
ment. Powering down is the opposite order - power amps first. This procedure is a good habit to
follow because it stresses the speakers and ears the least.
The power supply in this preamp is tube based which has the inherant advantage of slow start
(as the tubes warm up). This gives the least stress to the internal components.
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OFF ON