Mercury Magnetics, Classic Tone, Heyboyer, to name a few

Auricap, Alessandro, Mallory, JJ/Tesla, MOD, Orange Drop, Sprague Atom and more...

Dale, Holco, Kamaya, Caddock and more...

Neutrik, Switchcraft, Rean, Canare, Mogami, Marinco, custom teflon and silver cable and more...

Altec, JBL, Celestion, Electro-Voice, Eminence, Fane, Jensen, Weber...

Transformers;

Capacitors;

Resistors;

Cable and Connectors

Speakers;

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It that 'grail tone' eluding you?
Is your amp breaking up too soon, or not soon enough?
Ghost notes when playing loud?
Running hot maybe?
Excessive hum and noise?

We offer various levels of upgrade to power supplies, transformers, caps, resistors, tubes and more. We use only best sounding parts, and silver solder.

We can make your newer stock amp sing like a classic or roar like a beast!

Upgrades for any amp and most budgets

Portland Pro Audio 611 N. Tillamook St., Portland OR 97227 503-406-1881