Bogen MO-100a mono block tube amplifier Works Nice! Original USA made Bogen-branded tubes. This power amp has a standby feature which has been bypassed by the addition of jumpers on the octal socket that would have had a plug-in accessory cable to a switch for placing the output tubes in standby mode. The included schematic shows how to restore this if desired, to original. Also includes a plug-in accessory transformer as seen in the photo (the black thing).The item "Bogen MO-100a mono block tube power amplifier Works Nice" is in sale since Wednesday, August 28, 2019. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps". The seller is "bennosteve" and is located in Mount Pleasant, Michigan. This item can be shipped to United States, Canada, United Kingdom, China, Mexico, Germany, Japan, Brazil, France, Australia, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Sweden, South Korea, Indonesia, South africa, Thailand, Belgium, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Barbados, Bangladesh, Bermuda, Bolivia, Ecuador, Egypt, Guadeloupe, Iceland, Jordan, Sri lanka, Luxembourg, Macao, Martinique, Maldives, Peru, Pakistan, Reunion, Viet nam, Uruguay.