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LampizatOr- The Horizon DAC Manual
Tube rolling and replacement
W took an expensive and painful decision to sell the DAC with the best tubes we can
find in consistent sustainable supply. Therefore we feel you should not be tempted to
change them for any reason. If you feel that you must try tubes other than supplied,
please follow the guidelines below.
Generally, among our tubes the level of significance for the sound quality is: Rectifier
10%, Small dual trioded 6SN7 = 40%, pentodes 20% , synergy between pentodes and
dual triodes = 30%.
The sign that the tube nees changing is that there is no sound and/or the tube is cold
and doesnt glow red filiaments in the dark,
White powder inside the glass means oxygen
inside = dead tube.
Tube ADAPTERS
The pentodes and rectifier generally dont need
adapter.
We can find adapters straight to Octal, like
12AU7->6SN7, or double adapters like for more
rare tube - ECC182 - we need following
adapter: first 5687 to 12AU7 and that goes into
12AU7 to 6SN7 Octal.
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