This "L" Series of Tube Amplifier Kits and two add-on kits that are easy to build, sound great, and are just fun! These Kits utilize a 5670 dual triode tube and 6005 pentode tubes. The amplifiers have built-in volume control so that they can be driven directly from a CD player, tuner, etc. If more gain is needed to drive the amplifier a Pre amp Kit can be added to the amplifier, the pre amp can be configured for a gain of 10 to 30 db. The amplifiers come with a robust power transformer that can be configured for either 120 or 240 volts, 50 to 60 hertz.
Each kit comes complete with resistors, capacitors, tubes, connectors, circuit board, transformers, and all necessary hardware to mount on the provided "bread board".
If you have built one of our other kits you will notice that the simple but good design has followed over to these. We have had requests for other configurations to our original amps which we tried to incorporate into this series.
This is an add-on module with inter-connections to a series "L" amplifier, that can provide additional gain for inputs like magnetic phono cartridge, a microphone or other low level output devices. It may be added on at the time of assembly of your amp or at a later date. It may be used with either a mono or stereo amplifier.
This is an add-on module with inter-connections to a series "L" amplifier, that can adjust the tone with a base and a treble control. It may be added on at the time of assembly of your amp or at a later date. It may be used with either a mono or stereo amplifier.
Caution: These Kits may be operated as supplied, however voltages in excess of 240 volts are present on the board and the tubes get veryhot. It is advised that the amplifier be mounted in a well-ventilated metal enclosure to reduce the potential of fire or shock.