EICO HF-81 integrated amplifier Measurements  Sidebar 4:
Measurements  Although it does have 32 and 16 ohm output
transformer taps, I measured the EICO HF-81 from its 8 and 4 ohm
taps only, feeling that these will be optimal for use with
modern speakers such as the mbls PB used for his auditioning.
While I like the positive electrical connection terminal strips
allow, those on the HF-81 are too close together to accept good
spades, such as the Kimbers. I therefore used bare wire wrapped
around the screws, but if you do likewise, be careful you don't
short the live outputs with stray whiskers of wire.  An
unexpected problem arose during the testing, due to the fact
that the HF-81's Power switch is at the leftmost rotation of its
right-channel Treble control. Consistently resetting this
control to its center point after turn-on was an exercise in
futility. In the following graphs, you get my best shot at this
task.  The HF-81's maximum voltage gain was modest, at 26.1dB
into 8 ohms from the 8 ohm tap, 23.3dB fr