New! 5687-based stereo Aikido line-stage amplifier kit. Printed Circuit Boards and kits to match Tube CAD Journal circuit designs. Aikido and stepped attenuator kits.
All boards are audio-grade PCBs: Double-sided, plated through holes, extra-thick board, 2oz-copper traces, clean solder mask and part location silk screening.
All printed circuit boards are expensively and lovingly made in USA
All printed circuit boards are expensively and lovingly made in USA
New and Improved TCJ Stepped Attenuator Kit $160.00 | 5687-based Aikido line stage amplifier kit. Includes tubes (EH 6CG& & NOS JAN 5687), resistors, power-supply and heater bypass capacitors, two sets of coupling capacitors (PIO and film), printed circuit board, ceramic tube sockets, and board stand offs. $135.00 |
TCJ Attenuator Resistor Pack $10.00 | New circuit board!
24V Aikido Tube Line Stage and Headphone Amplifier $45.00 |
9-Pin stereo Aikido PCB boards are four inches by ten inches, with eight mounting holes. Boards are made in the USA and come with schematic and recommended part values and design examples. $39.00 | This is a stereo Aikido PCB that accepts 5687s in the output tube position. These wonderful and relatively cheap tubes are a natural for driving high-impedance headphones and high-capacitance interconnects. $39.00 |
Octal stereo Aikido PCB boards are four inches by ten inches, with eight mounting holes. Perfect for use with 6SN7 and 12SN7 tubes. Boards are made in the USA and come with schematic and recommended part values and design examples. $39.00 | Single channel Aikido printed circuit boards for 9-pin tubes. Perfect for stereo and 5-channel systems and for use in monoblock power amplifiers. $24.00, 5/$99.00 |
$24.00, 5/$99.00 | $10.00 |
$20.00 | $10.00 |
$20.00 | Aikido Line Stage Amplifier Kit (octal-based & stereo). Includes tubes, resistors, PS and heater bypass capacitors, two sets of coupling capacitors (PIO and film), printed circuit board, ceramic tube sockets, and board stand offs. $148.00 |
Aikido Line Stage Amplifier Kit (Octal & dual-mono). Includes tubes, resistors, PS and heater bypass capacitors, two sets of coupling capacitors (PIO and film), two printed circuit boards, ceramic tube sockets, and board stand offs. $165.00 | Aikido Line Stage Amplifier Kit. Includes tubes, resistors, PS and heater bypass capacitors, two sets of coupling capacitors (PIO and film), two printed circuit boards, ceramic tube sockets, and board stand offs. $128.00 |
Aikido Line Stage Amplifier Kit (9-Pin & dual-mono). Includes tubes, resistors, PS and heater bypass capacitors, two sets of coupling capacitors (PIO and film), two printed circuit boards, ceramic tube sockets, and board stand offs. $143.00 |
