amp transistor.

2 channels:
channel 1 -> input jack, 4 knobs: gain, bass, middle and treble
channel 2 -> input jack or XLR, 3 knobs: gain, bass and treble
and an effect section with a switch to select the effect (4 choices) and 2 knobs: mix to dose between the two channels and return to assay the amount of effect.
Note that the quality of the effect is very good.

level connections, there is everything you need: DI output (XLR) line or, tuner, phone, send, return, footswitch

UTILIZATION

config simple.

SOUNDS

ideal for an acoustic instrument (guitar, violin ,...).
the sound is very faithful. very straight.
with an acoustic guitar, you can you point to any stage of the world without blushing: you have the serious stuff!

on the other hand, this is not the same if you plug a guitar. in this case, it's as if you branch your guitar into a PA system. also: EAR, acoustic the people, the purpose is clear.
for the electric, I used for rehearsals or jam as convenient to carry.

OVERALL OPINION

I use it for 5 years and I will keep forever.
the sound is very straight, very professional with my acoustic guitar.
again, it's very convenient to transport for jam or repetitions for electric

it's expensive on the day you buy it, but as time passes, the more you tell yourself that you made the right choice.