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Randall built the RD20-112E-U Divalo as a two-channel, 20-watt all-tube combo amplifier, housing its circuitry and a single 12-inch speaker in one unit. It sat within Randall's Divalo line as a compact, fully valve-driven offering aimed at players who required studio and live flexibility in a single package.
The amplifier ran on a 12AX7/6V6 tube complement and offered two channels plus a dedicated Tube Boost Mode, with channel switching and boost accessible via the included RF2T2C two-function footswitch. The control set covered Master Volume, individual Channel Volume and Channel Gain controls for each channel, and a shared EQ section of Bass, Middle, Treble, and Presence. A Class A discrete instrument-level effects loop handled external processing without degrading signal integrity. Output options extended beyond the internal RD1250-8 12-inch speaker through three speaker jacks and an XLR speaker emulator output with ground lift, the latter allowing a direct signal to be fed to a mixing console or recording interface without a microphone. A footswitch input, FX Send, and FX Return rounded out the rear panel connectivity.
Owners seeking replacement tubes, speaker substitutions, or loop-level calibration should consult a qualified amplifier technician familiar with all-tube combo circuits.
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The catalog shot showed one finish, under one light, a long time ago. Yours has been played. Photos from owners are what the next person finds when they are trying to identify a part, match a finish, or work out whether the one they just bought is really what the seller said it was.
Specs only go so far. What actually fits, what breaks first, what the factory got right and what everyone ends up changing — that lives with the people who own them, not in a datasheet. Post what you know and it stays on this page for whoever comes looking next.
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From spec questions to full builds — players who have lived this gear since 2007.
Since 2007
