Amp any lamps.
Year unknown: probably late 70 early 80.
Unknown power: around 8 / 10 Watts.
Special feature: speakerphone original Elliptical brand Audax
2 input channels equivalent.
Tone control effectively.
vibrato: trimming speed and amplitude.
one branch, turning the knob and go to great sound at reasonable volume.
Its very interesting sweet enough saturation obtained very reasonable volume gradually.
Bought a used guitar, I use it for harmonica: it allows me to have a sound "crunchy" even when playing softly.
Is very suitable for Blues with a nice soft, warm saturation