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Hello all. It has been some time since I posted on here. Some will remember me from the bias mods I was producing while back. I have since closed down the business due to lack of time. I work a full time job and quite honestly I was getting a ton of overseas orders through my website which just...

I just thought everyone here would like to know I took the time to contact Mesa Boogie regarding their bias supply. The tech I spoke with informed me that these amps definatly do run hot and reccomend their coolest running tubes (red). The method they use for cooling the bias down is the same...

I'm once again offering a free bias mod kit to the first person that can get me a copy of the lonestar Special schematics. Simply email them to [email protected]. Also include your shipping info and amp you want the kit for and I'll get it shipped our right away. Thanks John

Thanks to all for all the business and positive feedback. Although I do offer a kit for the stiletto, it is one of the mesa boogie amps I can't seem to get a schematic for. I always like to send a schematic with every kit labeling the load resistor that needs to be changed. If there is anyone...

I recently read a book on tube amp designs and in the effects loop section they talked about the 12AT7's being better suited in the effects loop for many reasons. I was just wondering if anyone tried these and if so how it worked. I hear so many people complain about effects loops and most of...

I'm trying to help a customer in Canada who purchased my bias mod and does not know to install it in his amp. If anyone has a schematic and possible some gutshots I would really appreciate it. If you have any they can be emailed to [email protected] Thanks John

I see alot of amps and recieve alot of phone calls from people wanting to know why their amps are blowing fuses. I would say the majority of the time it's due to shorted rectifier tubes. These tubes tend to take alot of abuse, more so than your other tubes and I'll explain why as well as show...

Well I have finally taken the time to trace the bias circuit in my roadster and identify the resistor that needs to be changed. This is the same bias circuit used on the 6L6's in the Roadking II for anyone that might have the schematic for a roadking. The roadster has a fixed 15k resistor for...