Tech Support / Assistance
All models and brands accepted. We have a skilled technical staff to provide immediate repair for Ampeg, Marshall, Fender, Soldano, Mesa Boogie, Gianinni, Meteoro, Bogner, Danelectro, Groove Tubes among others. High quality work, original manufacturer spare parts. Free quote, no obligation.

Read more about our tube amp tech service.

Custom models / Mods / Special projects
We create special custom models based on sounds you'd like to get from your guitar. No digital systems accepted. Custom speaker coils, preamp effect pedals, high or low gain drive solutions. Common requests include adding or removing functions from pre-existant models, larger or smaller room spring reverb mods, speaker replacement and much more.

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Products
We are soon going to release a 100% tube special preamp pedal capable of delivering silk smooth blues and jazz sounds as well as unbelievable thrashing distortion all in one package. Ideal for the session musician or heavy road work, this design is 100% tube based and does not have a single transistor or integrated circuit built in. As heavy duty and pure tube as they can get.

Dr.Tube. The specialist in the repair and modification of tube amps. Dr. Tube - the tube amp repair and mod specialist. Schematics, much reference material. See also the Dr. Tube current production and NOS tube store.

We work with all the most popular brands:

valvulados.com.br

Tube amplification for guitar, bass or high fidelity applications
Preamps, effect pedals and technical assistance on all brands of tube equipment
Modifications and custom shop, we build your sound to your specs!

Contact us now! The tone of your dreams is closer(and cheaper) than you imagine.