Operating Procedure
1. Make sure that you read instructions before attempting to operate your unit.
2. Attach the audio sources and speakers (refer to the picture below).
Never run the amplifier without speakers
connected since that may damage the transformers.
Speaker’s minus terminal should be connected to
the speaker terminal marked as zero (0) and positive terminal should be connected to the terminal that
corresponds to the speaker’s nominal impedance (4 or 8 ohms). If your speaker has nominal impedance of 6
ohms, you can connect it to either of the two outputs. You should try both and select the one that performs
better with your speakers. Make sure to prevent short circuit at the amplifier’s speaker terminals as that will
damage the amplifier
4
8 ohms
4 ohms
L ch.
0
4 ohms
8
model i34
8
0
ohms
4
8 ohms
R ch.
Figure 2:
model i34
speakers connection
NOTE: 4 ohms and 8 ohms speakers cannot be connected to the speaker terminals at the same time!
Figure 2 is for illustration purpose only.
3. Make sure your amplifier is properly connected to a high-current power receptacle.
4. When turning the unit on, make sure the volume control is at its lowest point (the volume control is at minimum
when turned counterclockwise to the mechanical limit).
5. The amplifier will be fully functional after only a couple of minutes. However, as it warms up over the first 30
minutes of operation you may notice slight improvement in the sound quality.
6. At the end of your listening session make sure to turn the amplifier off. Leaving it on does nothing for sound
quality and it reduces life of the vacuum tubes.
The amplifier should always be turned on and off via its own power on-off switch.
TUBE REPLACEMENT
Your
model i34
amplifier’s conservative design maximizes life of the tubes. You can expect that your E34L
power tubes will last approximately 1200 hrs, while the ECC832 preamplifier tubes should last approximately
2500 hrs. Lacking the accurate time measurement, we strongly recommend replacing the output tubes at 12-
18 months interval (depending on your listening habits) and signal tubes at every other power tube
replacement (every 24-36 months). This will ensure that the amplifier always performs at its best and tube
failure will not overstress other parts.
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