This special control, called “Power Scaling” (www.powerscaling.com), allows the amplifier’s tube voltages to be
adjusted proportionally to achieve volume attenuation without change of tone from 5W down to whisper levels stillmaintainingg
maximum crunch and sustain.
Running the Volume at max and lowering the Attenuation control down to the "Whisper"
position, reduces the volume while the Power Scaling incorporated circuitry increases the
distortion by clipping the power amp allowing you to achieve full blast stack tube tone at
“whisper” levels. This is our favorite way of using the 105 for great tones since the power
tube and output transformer contribute to the sound.
Running the ATTENUATION at MAX and using the VOLUME to control overall level, allows
the 105 to operate more like a normal tube amp. Lowering the Volume control also helps
decreasing the amount of clipping introduced by the Attenuator control at its minimum settings
(Whisper). This is also useful for getting good clean sounds with the 105.