What each setting does

The settings

Five toggles, 18 settings, from 3.5 dB to 33.25 dB in 1.75 dB steps.

The first-stage toggle is always in: lever up for 3½ dB, down for 7. Each of the four stage toggles adds its value when its lever is down. With the first stage at 3½, only the 1¾ stage counts; at 7, all four do. Add the engaged values to get the attenuation; the panel's dB table and watts table do the adding for you.

Watts are for a 60 W input: P = 60 × 10^−dB/10, two significant figures. A 30 W amp gives half of each figure; the 120 W model at full input gives twice.

Play the front panel

Every setting

All 18 settings. ● = stage engaged (lever down). Watts for a 60 W input, ideal label values.