Dumble Overdrive Special OD-50 WX 1978

A 1978/9 Dumble Overdrive Special used by Joe Bonamassa
1978 Dumble Overdrive Special OD-50 WX
An exceptionally fine and all original 1978/79 Dumble Overdive Special Combo (serial number "038"). This 'Export Applied Acoustics' model 50 watt combo weighs 67 lbs and has a wooden cabinet with tan 'straw' speaker grill with "Dumble" metal logo. The exterior measurements are: 21 inches wide x 21 inches high x 10 1/2 inches deep. Original black plastic handle. One 12 inch Electro-Voice SRO/12 speaker. Five tubes: 2 x Fender 6L6 GC; 1 x Mullard 12 AT7; 1 x GE 12 AX7, and 1 x Mazda 12 AX7. The six rotary controls feature: 1 x 'Volume'; 1 x 'Treble'; 1 x 'Middle'; 1 x 'Bass'; 1 x 'Overdrive', and 1 x 'Level'. In addition there are five two-way slide switches: 'Bright'; 'Deep'; 'Rock'; 'Manual', and 'Accent'. Green pilot light. On the back of the amp are: Rotary voltage selector with pre-sets for 117/200/210/220/230/240 volts; Three-way 'Ground' switch; 2 Amp 'Slo Blo' fuse; 'Mains' on/off switch; 'Operate' and 'Standby' switch; Two jack inputs for 4 Ohm Speaker; One 'Pre-Amp Output'; One 'Foot Pedal' socket. Housed in a specially made aluminum flight-case with four wheels.

"Overdrive Special 038 This is another export model that was sent to Applied Acoustics in Germany. Some of them were only shipped as an amp chassis. The Cabinet for most of these, 20 - 25 amplifiers were not Dumble made.
Overdrive Special 034 is a 50 watt model. It has 6L6 power tubes and is fitted with a JBL K120 speaker. This amplifier has a beautifully clean and chimey tone and the unmistakable Dumble singing overdrive. This is a very clean Overdrive Special and except for the Applied Acoustics made cabinet, untouched." (Jesse Schwarz. A Dumble Book, pp. 113/114). Jesse Schwarz mistakenly confused the serial number which is in fact "038" and not "034" as shown in his book.  (#2024)