Thermionic Culture THE SOLO VULTURE High Gain Distortion Unit - Manual (Page 6)

© Thermionic Culture Ltd, May 2012 5
2.5 Distortion Type switch
This switch controls the configuration of the special 6AS6
type valve:
T
: The valve is a Triode, which is smoothest, all 2
nd
harmonic distortion.
P
: It becomes a natural Pentode, which has higher
gain, especially with low bias, and some odd
harmonics come in giving a more “aggressive”
sound. This setting is favoured by most users.
SQ1
: The SQ settings take advantage of the unusual valve
for effects. SQ1 is similar to P but when the valve is
pushed it distorts rather more, compresses then
over-compresses so much so that it reaches cut-off
point. Use with caution.
SQ2
: The configuration is now more Tetrode than Pentode
and is a seriously distorting setting. Can be quite
fun. An octave may be added at high bias settings.
(also with SQ1). Needs more “Dirty” output gain.
2.6 Mid Lift
This switches in a very high “Q” tuned circuit which is
designed to boost frequencies that relate to musical
chords. It can be very effective when it’s switched to the
key of a song and can really make a guitar or other
instrument stand out in a mix. It’s most effective in P
distortion setting with medium bias.
2.7 LPF (Low Pass Filter)
This is a sharp (12dB/octave) filter to remove unwanted
high frequencies: