Vintage Tube Amp

This is a vintage David Bogen Company tube power amplifier, manufactured in the USA for industrial / commercial PA or laboratory use, not consumer hi-fi. These were commonly used in institutional sound systems, factories, schools, and industrial control environments. Paramus, New Jersey. Marked 117 VAC / 60 Hz. 300 watts / 2.5 amps. Tube complement (by chassis labeling). (2) EL34 / 6CA7 output tubes. EZ81 / 6CA4 rectifier. 6AN8 driver / phase inverter. Relay socket present (industrial control use). 70V / 25V constant-voltage PA outputs. Also labeled 6.25? And 49? Taps. Designed for distributed speaker systems. Heavy-duty Bogen iron (power & output transformers). Original attached power cord. No attempt has been made to power the unit. Due to the age of this amplifier, it should be inspected and serviced by a qualified technician before use. As with most vintage tube equipment, some level of repair or restoration should be expected. Cosmetic condition shows normal wear consistent with age, including surface scratches, oxidation on laminations, and general shop wear. Please review all photos carefully, as they are part of the description. EL34 tube amp rebuild or conversion. Vintage PA / Bogen collectors. DIY tube audio builders. Transformer harvest for custom projects.

This is a vintage US military or defense contractor RF amplifier module. Identified by stamped markings and internal construction. REV A and REV B. Tube based RF amplifier section. Clearly marked high voltage plate and amplifier stages. Heavy copper shielding and military grade components. Made in USA. Modular pull from larger system. Designed for rack or vehicle mounted equipment. Tube sockets present. Extensive copper shielding. Military style labeling and revision control. Likely Cold War era, approximately 1950s to 1960s. No power applied. No cables or accessories included. Clean interior for age. Expect normal wear from service use. Intended for collectors, restorers, or display. High voltage device.