Here are some pics of my latest creations, two made for presents and one
for myself.
They are basically three channel amps based on the pimeta schematic.
Opamps are Ad8620 and 8610, the buffers EL2001.
All amps are biased into class A with cascodes.
The batt monitor shows 5 levels and is switch operated.
The battery packs are 8x 300mah 2/3 aaa nimh cells.
The amps quiescent current draw is a about 14.5 ma.
the power indicator led fitted to the amp module is a
Luxeon item and is very efficient producing a high levels
of illumination at .5ma, the colour is cyan, very nice
Additional features are the inclusion of jumper positions in
the feedback network to add bass boost modules and
further jumper positions on the buffer outputs to adjust
source impedance.
Setmenu