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JAS
Array 1.1 2A3 Vacuum Tube
Pre-Amplifier
Safety Instructions Manual
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ARRAY 1.1 VACUUM TUBE PRE-AMPLIFIER
Thank you for purchasing the JAS Array 1.1 2A3 Vacuum Tube
Pre-amplifier. This unit is designed and manufactured to the highest
quality standards. The design exemplifies performance, elegance,
and simplicity. Your will find this tube amplifier visually pleasing
and easy to use without going through pages of instructions. The
most important things to know before operating the unit is safety
measure as documented below.
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Features of Array 1.1 2A3 Pre-amplifier
Selected and matched 2A3, 6SN7 and 6922 tubes
Four line stage stereo inputs
Two line stage stereo outputs
Separate tube rectifiers and regulators for each channel
Separate wide-band audio output transformers
All transformers are electrically isolated and mechanically shock-mounted
Additional internal damping material for added control of mechanical resonance
4 and 8-ohm output impedance taps for optimum speaker impedance matching
The internal wiring circuit is welded through completely manual lap welding,
with uniform and firm welding points. All insulating wires are silver-plated
flame retarding wires
Vibration-absorbing elastomer feet
Fuse protect amplifier circuit in case of over current
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Safety Instructions for JAS Vacuum Tube Amplifiers
1. Never disassemble the unit as you may be exposed to dangerous voltage. In case
of operational malfunction, contact the nearest authorized service center.
2. Do not attempt to alter the unit in any way. This device has been laboratory
tested and adjusted to optimal operation condition.
3. Vacuum tubes dissipate heat in high temperature.
a. Do not touch the tubes with bare hands during operation. It might cause
sever burns.
b. Do not expose the tubes to moisture. Do not clean the device with wet towel.
Water or other fluid will cause severe damage to the unit; and in some cases
may cause the tube to burst and/or the unit to catch fire.
c. The vacuum tubes will take at least 5 to 10 minute to cool down.
d. Do not leave the device within reach of children.
4. This device should be kept far from any heat sources and flammable substances.
Dry condition and good ventilation are required.
5. Electron tubes are fragile instruments and can easily be broken. Do not subject
this device to any strong impact.
6. When the device is in operation
a. Do not move the device from place to place.
b. Do not attempt to change the vacuum tubes.
c. Do not disconnect the speakers from the amplifier; doing so may result in
excess current spike which may destroy the vacuum tubes and the entire unit.
7. This device is rated to operate on AC 115v/230v according to local main supply
of imported region. Power should be switched off during thunderstorm or during
a long period of non-operation.
8. Before operating the device, the amplifier should be properly connected.
9. Fuse of proper rating should be used as replacement when necessary. The
maximum allowable current is indicated at the back of the unit.
10. During incidents of smoke, fire, unusual sound or smell emerging from the
device, switch off the unit and unplug the power cord immediately. Contact the
nearest authorized dealer for service.
11. Warranty will become void if the unit is operated with non JAS Audio approved
vacuum tubes. Contact your JAS Audio dealers for recommendation of
non-factory tubes.
12. JAS Audio and its authorized distributors accept no liability for any financial
losses or human and pet injuries due to operation of the unit that violate the
above safety instructions.
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Technical Specifications
Type : Single End Class A
Frequency Response :5Hz － 100KHz
Output Impedance :<2.5 KΩ
Input Impedance :100K
Input Sensitivity :1v
Total Gain :20 dB
S/N :>90 dB
Vacuum Tube : 6922 x 3, 6SN7 x 3, EL-34 x 1, 2A3 x 2
AC Power :110v-117v or 220v-240v; 60Hz/50Hz
Dimensions :17.3”（W）× 14.5”（D）× 7.9”（H）
Weight :18 Kg
Output Port :2 L+R RCA Signal input
Input Port :4 L+R RCA Signal input
Power Switch Type : Front panel control knob
Volume Control : One front panel analog volume control knob
Version 1.1 and Copyright
©
June 2005 JAS AUDIO
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