Preamp tubes can subtly shape or change tone, gain and effect signal-to-noise
ratios.
In Vintage H.H. Scott products, these Twin Triodes are typically used across
the entire product range (Preamps, Integrated Amps, Tuners, and Receivers).
Scott typically private-labled (OEM'ed) Telefunkens.
Typical applications are: phono input
sections, Dynaural Noise Suppression applications, and tone (treble & bass)
controls, and tuner AF line-level output drivers.
Typical Scott Preamp Schematic -- Type
120-A