Preamp plug disabled for safety. Dimensions: 14.75 x 6.2 x 4.2 inch / 375 x 157 x 107 mm. Requires 8ohm or 16ohm speaker. Shows wear from use see pictures. This amp is Mono but can support multiple speakers.
You can connect two full-size 8ohm speakers in series to create a 16ohm speaker or you can connect two full-size 4ohm speakers in parallel to create an 8ohm speaker. In my experience mono is better for listening in general - while working or moving around a room. A true stereo image requires very specific room/speaker configuration and the listener must sit stationary in the middle of the room to achieve the stereophonic imaging - which is not very practical for everyday listening. The other option is to find two matching monoblocks and use one for each channel. The item "The Fisher 70AZ Monoblock Tube Amplifier with Z-Matic Control 1954 Made In USA" is in sale since Thursday, December 12, 2019.This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps". The seller is "themidwestcellar" and is located in Toledo, Ohio. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, 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.