Congratulations on the purchase of your new
RANDALL
Amplifier!
We at Randall Amplification appreciate that you
chose our brand of guitar instrument amplifiers
and wish you years of great tone and enjoyable
playing time with your new machine.
Please review the safety instructions below and
be aware that the documentation provided in this
manual references 120volt USA versions of the
models covered. Note that the POWER listed on
the back of the unit should be for your countries’
power standard.
A M P L
I
F
I
E R S
RM50/RM80
M O D U L A R T U B E C O M B O S
O W N E R S
M A N U A L
1. 1/4” Guitar Input
2. Channel selector switch toggles between 3 channels (footswitchable)
3. Channel 1 gain controls amount of pre amp drive to channel 1
4. Bright switch adds Hi-Frequency EQ “Sparkle” to Channel 1
5. Channel 1 volume controls the amount of Channel 1 signal being sent to the master volume output.
6. Channel 2 gain controls amount of pre amp overdrive to channel 2 - this will control the amount of “distortion”
7. Channel 2 volume controls the amount of Channel 2 signal being sent to the master volume output.
8. Channel 3 gain controls amount of pre amp overdrive to channel 3 - this will control the amount of “searing distortion”
9. Channel 3 volume controls the amount of Channel 3 signal being sent to the master volume output.
10. The Bass knob controls the amount of low frequency equalization for the entire signal.
11. The BASS BOOST will enhance low EQ - Warning: use of boost with the Bass knob turned up can cause speaker damage
12. The Middle knob controls the mid-frequency equalization for the entire signal.
13. The MID SCOOP will decrease middle EQ similar to a “smiley face” setting on a graphic EQ
14. The Treble knob will control the amount of High frequency equalization for the entire signal
15. The Presence knob controls the uppermost High EQ frequencies above the Treble EQ shelf.
16. The Reverb knob controls the amount of analog spring reverb in the overall signal (footswitchable)
17. The MASTER VOLUME controls the amps volume going to whatever speaker cabinet is connected.
18. The PHONES output allows for headphones to be plugged in -
Note: speaker out is muted during headphone operation.
19. STEREO MEDIA INPUT allows for 1/8” media source such as MP3 player to be inserted into signal to play along
20. The POWER switch turns the amplifier on and off.
21. This jack is for the power cable supplied for your regions power - plug this cable in and the other side to the source.
22. The SPEAKER OUTPUTS are standard 1/4” and output is MINIMUM 4 OHMS -
(this means maximum 2-8ohm cabs)
23. XLR Line Out provides “mic cable” output to carry amp output signal to PA, mixing console or recording device.
24. GND LIFT lifts the ground or “Earth” of the XLR OUT to avoid noise/hum when interfacing external gear via XLR
25. EFFECTS LOOP RETURN - plug 1/4” guitar cable from the output from Effects pedal or device here.
26. EFFECTS LOOP SEND - plug 1/4” guitar cable to the inout of Effects pedal or device here.
27. FOOTSWITCH - 7 PIN DIN connector of included 4 button footswitch inserts here to switch Channels and Reverb
Note: Combo version control panels are the same but oriented right to left
