The
TF-1 Filter is a versatile electrical instrument preamplifier that
allows for frequency selective level boost in various filter shapes. Six
frequency center points covering the whole range of an electric guitar
or similar instruments are available for a boost of up to 15dB, with the
amount of boost being continously adjustable.
The shape of the filter curve can be either low shelf,
bell, or high shelf, with the possibility of blending between the three
configurations.
The markings on all Telenordia pedals are actually engraved into the pedals--there are no stickers used!