This function may also be controlled from a footswitch. For the footswitch to operate, this button must be in its OUT position. VALVE DRIVE (ABM/RPM-1 only) This routes the signal either through a clean Solid State amplification section (control on zero) or through a Dual Triode Tube amplification/overdrive section to add either tonal character, i.e. warmth with the control set at 9 o’clock, a slight edge in the sound at 12 o’clock, through to an increasing degree of Tube distortion/overdrive as

Your Ashdown Engineering product details: Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Colour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . .

pressing this button mutes all sound from the amplifier and allows a tuner connected to the TUNER / LINE socket to operate for silent tuning. Release the button and you are back in action again. ABM/RPM-1 MAG 300 Electric Blue 180 Front/Rear Panel Facilities ABM, RPM-1, MAG 300 & ELECTRIC BLUE 180 300 / 500 WATT ABM HEAD / COMBO 900 WATT ABM HEAD / COMBO I o 5 4 3 2 1 0 10 9 8 7 6 58 52 47 42 39 35 150 120 95 75 65 RPM1 RACK-MOUNT PREAMP TUNER / LINE OUT This output socket provides a line level

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying this product. GROUNDING INSTRUCTIONS This product must be grounded (earthed). If it should malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This product is equipped with a supply cord having an equipment grounding conductor