Design your own Aikido 9-Pin Mono Line-Amplifier Kit. Add to a pair printed circuit boards and User Guide only those parts that you need! Select from the following drop-down boxes the parts that you need to populate the stereo PCB.

Custom Aikido Amplifier  9-pin Dual-Mono Kit        .
Custom Aikido Amplifier 9-pin Dual-Mono Kit .
Item# Two PCBs and User Guide
$48.00
Four EH Vacuum Tubes:  Resistors for Two Aikido Mono PCB with Redundant Values:  Supporting and Power-Supply Capacitors:  Set of Ceramic PCB-Mount Tube Sockets:  RTI Audio Coupling Capacitors from RTI Electronics:  Dayton 30µF Coupling Capacitors:  PIO (Paper-In-Oil) Coupling Capacitors:  Sets of PCB stand-offs and screws and O-rings:  Rotary switch & PCB for switching between output Capacitors:  Selector switch & PCB for switching between 3 input sources:  Super strong double sided tape to hold coupling capacitors in place: 
Availability: Usually ships the next business day.

Product Description

Custom Aikido Amplifier  9-pin Dual-Mono Kit        .
Design your own kit. If you already own many or none of the parts needed in building your own giant-killing Aikido line-stage amplifier, the above lists of parts will help you design an Aikido kit that includes everything you need to populate the PCB. Buy just what you need and save.

All that is needed to finish the entire line stage is a chassis, power supply, volume and input selector controls, and a handful of RCA jacks and hookup wire. Although this custom Aikido kit isn't all that is needed, it is a great start.

Accessories

Four Tubes
Four Tubes
Four tubes from Electro-Harmonix. Choose between four EH 6CG7s or two Eh 6CG7s and two EH 6922s. The all 6CG7 offers the smoothest sound, while the 6CG7/6922 combination offers the lowest output impedance.
Resistor pack
Resistor pack
All the necessary resistors to populate the PCB. Resistor pack includes multiple values for the cathode resistors. Choose between two types: carbon-film, 5%, 1W resistors and metal-film, 1%, 1/2W resistors. At least 44 Resistors altogether. $10
Supporting Capacitor Pack
Supporting Capacitor Pack
Four Wima MKP10, polypropylene capacitors: two 0.68µF & two 0.33µF 630Vdc. Four electrolytic capacitors (two for heater element shunting and two high-frequency capacitors for optional cathode resistor bypassing; high-quality Panasonic electrolytic capacitors are supplied. In addition, four shield shunting film capacitors are included.
Set of Ceramic Tube Sockets
Set of Ceramic Tube Sockets
Four ceramic PCB-mount tube sockets. The PCB was designed to hold these tube sockets.
RTI Audio polypropylene-film Capacitors
RTI Audio polypropylene-film Capacitors
New RTIE Audio polypropylene-film coupling capacitors. This is an amazing sleeper of a capacitor. It is made in the USA by RTI Electronics, a 27 year old company that is, as RTIE likes to say, "an industry leader in the design and manufacture of high quality audio/video Teflon capacitors." Which is true, as many high-end capacitors, no matter how labeled, are actually made by RTI Electronics. A huge upgrade in sonics over typical polypropylene coupling capacitors. (Obviously, the 12SX7 is not included, but shown to give a sense of the part's size.) $20 for two capacitors.
Two 0.47µF PIO capacitors
Two 0.47µF PIO capacitors
Two K42Y-2, 0.47µF, 500V, 10% PIO (paper-in-oil) coupling capacitors. Russian made and built to tight military specifications. Painted metal case houses foil/paper-in-oil capacitor. Here is one review from the web: "After extensive testing between Rob and myself on several MAX builds, it is apparent that this cap provides an optimum choice for use on the MAX - neutral, smooth mids and highs, with an extended but flat high frequency response, and no loss whatsoever in the bass frequencies." http://www.diyforums.org/MAX/MAXk42.php $10
Ten Stand-Offs
Ten Stand-Offs
Securely mount the PCB with these eight sets of stand-offs. Each set includes top and bottom screws and two soft rubber o-rings. Might seem expensive, until you price each of the pieces at a hardware store. $10 for ten sets of stand-offs.
Output-capacitor rotary selector switch
Output-capacitor rotary selector switch
Need a rotary switch for switching between the two coupling capacitors? Four-pole, three-position, non-shorting switch and some hookup wire is all that is needed. All four coupling capacitors attach to the PCB and the two channels output connect to either coupling capacitor C1’s or C2’s or both capacitors in parallel. $6
Three-input selector switch & PCB
Three-input selector switch & PCB
The Select-1 switch and PCB makes wiring up a line stage amplifier easier. Two channels of three inputs (both hot and grounds) attach to the PCB and two outputs leave the PCB to the output jacks. When a line input is not selected, both its hot and ground are detached from the selector's output. $6
Super Strong Tape
Super Strong Tape
Five inches of 3M brand super-strong, double-sided, indoor/outdoor tape—an excellent solution for holding large capacitors to the PCB. $1