Unison Research Unico Due User Manual

Unison Research

Unico Due
21
8. SAFETY AND MAINTENANCE
Never operate the device with either the bottom or top covers removed. Inside the
unit, there are high voltages present that can be dangerous.
Do not open the amplifier! There are no user serviceable parts inside.
For technical assistance please contact an Authorised Unison Research Dealer or an
Authorised Unison Research Service Center.
Do not spill liquid into the amplifier.
If liquid should be accidentally spilled into the amplifier, immediately disconnect the
mains plug from the wall socket and seek assistance from an Authorised Service
Center before attempting to operate it again.
Before inserting the mains plug into the wall socket, ensure that the mains switch on
the amplifier is in the “OFF” position.
Valve replacement should be carried out using only valves of the same type and
matched in pairs.
The Unico Due uses two ECC83 (12AX7) type valves. The amplifier has been
designed for maximum valve life: in laboratory tests, 1500 hours life was exceeded.
IMPORTANT! Before attempting valve replacement make sure that the amplifier is
switched off and remove the mains power cord from the amplifier. If in doubt, your
Authorised Dealer or Service Centre will be able to assist with this operation.
Cleaning the Unico Due
Cleaning must be done after switching off the amplifier and allowing it to cool down.
Use a soft dry cloth. Do not use solvents or alcohol-based detergents. Do not rub hard
on the screen-printed legends.
Adequate ventilation should be assured by leaving at least 5cm above and at the sides
of the Unico Due.
Never operate the amplifier when covered! Adequate ventilation is essential at all
times! Do not place other units or sources of heat above or below the Unico Due.
Thermal protection
The temperature inside the device is always monitored internally. In case of
excessively high temperatures, the power stage will be disabled and a dot on the front
panel display will flash quickly. This condition lasts until the temperature returns to a
normal value, or until the user powers the amplifier off.
Power protection
Unico Due is equipped with a sophisticated microprocessor-controlled system that
monitors the power output. In case the power output is excessive and protracted over
time, Unico Due gradually decreases the volume until the power output level is
suitable for long term reliable operation.
This system does not intervene in the case of music transients but prevents the
amplifier from being damaged in the event of "improper use" of amplifier or speaker
damage.

Unison Research Unico Due Specifications

General

Signal-to-Noise Ratio	>90 dB
Type	Integrated Amplifier
Output Power	100W per channel (8Ω)
Inputs	4x Line
Outputs	Speaker Terminals
Tube Complement	2x ECC83 (12AX7)
Total Harmonic Distortion	<0.1%