Pioneer Pre-main amplifier "A-30" "A-10"

Pioneer, Pre-main amplifier "A-30" "A-10",
]adhered to the particularity of audio, priced reasonable.

By "symmetrical power amplifier", power amplifiers set in independently by left and right,
it realizesa low distortion characteristic in all bands,
enables sound playing back to spread and to be in mid-high range.


By separating the power amplifier and preamplifier of power transformer,
and the digital circuit, completely, reduces the noise interference.


By adopting "clean ground structure ", in which the circuit over all structure set in a point of the
ground, reduces the noise from the equipment connected.