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Thank you very much for choosing Psvane Audio Reference Series vacuum tube amplifier.
When opening the package, please carefully remove the tube cage (vacuum tubes are
packed inside the cage) and install each tube to its marked location on the amplifier. Please
double check to ensure a safe and secure connection for each tube in its socket.
Please read this manual in its entirety before you turn on the amplifier for the first time.
Caution!
This product should only be used with its specified power supply voltage /
frequency to ensure safety and longevity.
If the product is not in use for extended period of time, please unplug the unit
from your power supply.
When the product is powered on, do not touch the vacuum tubes with bare
hands or any materials that could melt at high temperature. Tubes operate at
extremely high temperature and could cause serious burn to exposed skin.
Children should be kept away from a tube amplifier, no matter if it is powered on
or off for safety precautions.
Each channel has two output terminals – 4 ohm and 8 ohm. Under no
circumstance should the product be connected with speakers at both 4 ohm and
8 ohm terminals at the same time. This will overload your amp and cause serious
damages.
Before turning on the product, please check if your speakers are connected to the
amplifier properly. Turning on a tube amplifier without speaker load could cause
serious damage to your amplifier and it is not covered by manufacturer's
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warranty.
The product should be kept in a dry area, without excessive moisture and has
absolutely no contact with liquid.
Tube amplifier produces heat during operation – it should always be kept well
ventilated. Do not install them inside an enclosed cabinet.
Any repairs should be carried out by certified personnel only.
When moving a tube amplifier, please be gentle in case the vacuum tubes are
damaged during handling.
Under no circumstance should a vacuum tube be removed from a tube amplifier
or speakers are disconnected while the amplifier is still powered on.
Function:
1). Front view
1. Power switch 2. Volume control
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2). Top View:
1. Rectifier tube 5Z3PA/274B
2. 12AX7 pre-amp tube
3. EL34 driver tube
4. AC Hum adjustment
5. 845 output tube
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3). Back Faceplate:
1. RCA input (2 pairs)
2. RCA input switch (up / down)
3. Speaker Terminals
4. Power Socket
Specifications:
This amplifier is a single ended class A integrated amplifier, each channel uses a 845
vacuum tube as power output, a 12AX7 vacuum tube for pre-amplifier circuit, an EL34
vacuum tube as driver stage.
Input Impedance：100K Ohm Input Voltage：≤500mV
Output Power：2×25W Output Impedance：4、8Ω
Frequency Range：15Hz-25KHz THD：1%
S/N Ratio：80dB Power Supply：AC 115V 60Hz ±10%
Net weight: 46 Kg
Dimension: 580 W x 285 H ×420 D (mm) / 23" W x 11 1/2" H x 16 1/2" D
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Operational Instructions:
1、 Install all tubes to its corresponding sockets securely. Press down gently but ensure
a tight secure connection.
2、 Select 4 Ohm or 8 Ohm speaker connectors based on your speakers specification
and connect both channels correctly and securely.
3、 Connect RCA interconnects with your source equipment.
4、 Connect power cord to the power socket at the rear panel.
5、 Check the above steps carefully to ensure all connections are secure and correct.
6、 Turn the volume knob to minimum then turn Power ON.
7、 Wait for 30 seconds, adjust the volume to proper level then you can start to listen to
the music.
8、 In 5-10 minutes after power on, the amplifier and the tubes will be preheated and
the sound will be warmer and fuller than just powered on.
9、 If it is found that the amplifier has AC humming noise in use, you may adjust the AC
adjustment spot on the top plate to minimize the noise. You can do so by turn off
source music, listen to each channel speaker closely while turning the AC Hum
Adjustment on the top plate slowly left or right until the hum gets to minimum level.
10、 This amplifier is a self-bias amplifier - there is no need to bias the 845 output
tubes.
Caution regarding vacuum tubes:
1、 Each tube has a guide pin and the tube should only be installed with the guide pin fits
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into the socket appropriate position.
2、 Do not pull a tube by holding the glass part only. Only pull a tube by its base. Do not
shake, tap or snap a vacuum tube. A tube is a very fragile and delicate device – any
external force could cause fatal damage to it and such damage is not covered by
manufacturer's warranty.
3、 When a tube's internal silver coating becomes grey or white, the tube's vacuum seal has
broken and it must be replaced.
4、 When a tube's plate becomes abnormally red hot (it can only be identified in a dark
room), it indicates that the tube is running at over its heat dissipation limit. You should
turn off the amp immediately and find out what caused the overheating, which could
be a result of voltage variation, bias setting too high or a failing component in the
circuit. It's highly recommended to have a technician to check out the amp thoroughly
before resuming normal use.
Warranty:
Please consult your local distributor for warranty policy.
Manufacturer: PSVANE Audio Ltd.
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