Many people have removes the original circuit components and use the transformers and choke as the starting point for their own design audio circuit. The heart of each preamps is a very high quality output transformers (single ended EL84), high quality choke and oversized power transformer. The electronics were designed to stand alone and work independently. Circuit has original manufacture tubes: is EF86. 12AD7 (12AX7), 6X4 rectifier and single 6BQ5/EL84 output tube.Each preamp has an AC cord added for testing. The preamps will each pass an audio signal. Power and output transformers and choke are working fine. Sound quality is very clear. Its the main reason this is a desirable preamplifier/amplifier project. Please retain a qualified vacuum tube technician or work on these amps only if you have experience with high voltage electronics. IMPORTANT - Be sure to read the Terms and Conditions of Sale. Hardware Packing - Domestic and Outside US: Item will be wrapped with bubble wrap in two directions and double boxed. Use of a friend's account or biding for a friend is not allowed. The item "Pr Roberts 720 Tape Deck Preamplifiers, Single Ended EL84, Use As Mic Preamp" is in sale since Monday, April 8, 2019.
This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "wevtt" and is located in Belmont, Massachusetts. This item can be shipped worldwide.