TTi is the Lamborghini of power supply in my planet.
They costs a lot but they are reliable and very well engineered.
Customer support is famous to be awesome and to release schematics if you ask nicely (do not make them public please!)
Here for sale a TTi EL183R in mint conditions, still with foil on the display.
Unit is wired for 120VAC (2.5A fuse installed) but can be easily converted to 220VAC.
Quiet, no fan, linear power supply with remote sense and on/off output button.
18V 3A. US power cord included.
New it costs $311, worth every penny$160 $110 shipped to US lower states. Others please ask.
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