Description
A vintage 1963 Bogen CHB-35 Challenger tube amp head in great cosmetic condition. This amp has been modified by a previous owner for use as a guitar amp. The jacks have been converted over to standard quarter inch as well as a re-voiced preamp and tone stack to make the amp more guitar friendly. Bias adjust and bias balance features have been added as well. The amp now has a great crunch tone that lies somewhere between a tweed deluxe and a cranked Marshall. A great little boutique-quality vintage tube amp for a bargain price. This amp has been cleaned and serviced. It is fully functional and sounds great.
Overview
-Power Output: approximately 35 Watts
-Tubes: EZ81, 7868 (2), 6C4, 12AX7, 6EU7
-Controls: Mic 1, Input 2, Aux, Master, Bass, Treble
-Dimensions: 18.5" (indluding handles) x 10" x 6"
-Weight: 17 lbs
Modifications
-Input & speaker jacks converted to 1/4"
-Bias adjust added
-Bias balance added for power tube bias matching
-Screen grid resistors added to power tubes
-Tweaked resistor/capacitor values in preamp/tone stack to voice amp for guitar
-Grounded AC power cord added
