Information on Blues Jr Ultimate Kit

In a world where tube prices are going thru the roof, it's good to know there are other options to pick from. We include with our kit two high quality 6n2 to 12ax7 adaptors that allow you to use 6n2p preamp tubes in place of the pricey 12ax7 tubes without losing any of that tone you love. In fact we feel these tubes offer every bit the sound of a standard 12ax7 and more. This is very easy to install, out site has directions.

We recommend still using a 12ax7 in V3 (Phase Inverter) We supply directions.

The 6n2p is a European version of the 12ax7 preamp tube that so many amplifiers rely on for their preamp section. These tubes are Military Spec double silver plate stock. These deliver a sound that we feel no current production tube can do. These should also out live you in a properly maintained amplifier.

*NOTE We are currently out of stock on 6p14p power tubes, the kit as of now comes with everything but power tubes for $75 + shipping. Usually the kit is $100+ with power tubes. Still a great deal and great way to get your Blues Jr back to running better than new.

The 6p14p-k is a European version of the EL84. These Military Spec tubes are built to sound great and handle the vibrations and wear and tear in your amplifier like current production tubes cannot. We test each pair we ship. You will be amazed at the tone of your amp and you will not have to worry about changing your tubes anytime soon as these are extended life tubes. 

^-----6p14p tubes NOT INCLUDED currently out of stock.-----^

The Blues Jr was designed with a very hot bias, you will notice your power tubes do not last very long. We include with our kit a 27k and 33k resistor to cool this bias down to a reasonable level without effecting the tone of the amp. Use the 27k if you want your bias a little over 75%, good for most current production tubes. Or use the 33k if you plan to use NOS tubes, this value allows use of the most variety of EL84 style power tubes. No red plating. Your tubes will now last years. This mod is a must and should be done when the caps are also done. 

A 27k resistor will bias the amp a bit warmer than 33k. If you would like a little more headroom, id advise the 33k. If you would like the amp to breakup earlier 27k. 

The Blues Jr also was built with some parts that do not meet our standards and shouldnt meet yours as these parts are known to break down very quickly unlike the parts we supply. Our parts can handle a wider range or voltage and heat. Your amp will now be reliable and ready to rock the stage for decades to come.  Remember your amp is only as good as the parts allow it to be, our parts allow your personality and unique tone shine.

"Twin" mod

Simply connect a short wire to the lugs on the back of your mids pot and listen to your amp react like that of a Twin Reverb. Its that simple. This a must to get this amp to react like a vintage amplifier would.

Screen Grid resistors

Along with cooling the bias, it is a good idea to replace the stock 100ohm grid resistors with 1.5k 3watt replacements. This will along with the bias mod make the amp breath and show its real potential. We also found this greatly reduces any hum the amp may exhibit stock. Without the right voltage and values this amp is desperate for air !

Cathode Cap replacement

Many mod kits for the Blues Jr do not replace the old cathode caps. Like the power supply caps, these caps really need to replaced as well. We up the voltage on the replacement 22uf caps to 50v from 25v stock. Increase in bass response. We also found just as with the Screen Grid replacement this greatly reduces hum the amp may exhibit stock