Amp Repair - Stereorepair.net

12 Technology Drive, Ste.13   East Setauket, NY 11733

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Repair, Restoration and Top Grade - Three levels of Service


Parts Make a Difference About Resistors and Caps:
The Keys to Tone


" Modding"
And
"Un-Modding":
Is it Right for your amp and how much should you do?


"The Tone" What it is, how to get it and some of our thoughts on this  topic


"My custom made boutique amp died and as far as I know so did the guy who built it. Help!"


 

 

 
 

SHOULD I SEND MY AMP IN FOR YOU TO REPAIR


Possibly not. Guitar amps are fairly simple devices and there are many guitar stores and music shops that have a reasonably competent amp tech on premises or a free-lance tech they use. Problems like "dead amp", noisy controls and jacks, bad connections are not really that much of a challenge. It really does not make any sense to ship a amp to us for a retube and bias - there has to be some local shop that can do this for you. Of course, if you are in our local area you are more than welcome to bring your amp in for this kind of work.


A very real  problem is that few amp tech's have the experience and technical background for the more difficult problems such as  intermittent noise, oscillation, signal loss, poor tone response, tremolo /reverb circuits, bias circuit failure and such. Also many tech's do not realize how important replacement parts are to the tone of a amp, especially a vintage unit. (See our sidebar on this at left) 

 Boutique amps usually have no schematic provided to prevent copying and often have component values scraped off of parts. Some follow the practice of pouring black gick over their circuit boards to protect their "secret circuits".  One really has to have some  deep steeping in circuit analysis and a lot of experience in " seat of your pants" troubleshooting to get these things up and running again.
some vintage and British amps can look like a rat's nest of wires and be so densely stuffed it can be a real challenge to work on them.  After 30+ years at this I still have to wait for a good day before I look into  a VOX AC-50 or a Magnatone.

If you send your amp in for us to work on we will not do anything to mess up the tone or cause safety issues. We will not try out a few unauthorized "mods" to try to improve the sound or alter it to our particular taste. We also try to communicate with you about how you want your amp to sound, how you use it, what you play,  just to get a feel of what you are looking for in a repair or restoration

We do not routinely change film (tone) caps unless by customer request, they are actually defective or have been replaced with improper parts in the past as these are critical to the sound of a vintage amplifier.