The Private Stock Formula 21 Vacuum Tube Bass Pre-Amp is custom-designed by Andrew Barta, hand-built, tested and tweaked at our factory in the United States. It is available directly from Tech 21 for purchase on a per order basis.
http://www.tech21nyc.com/products/privatestock/index.html
If you have a serious interest in the Private Stock Formula 21 Vacuum Tube Bass Pre-Amp, please email info@tech21nyc.com and indicate Private Stock Formula 21 in the subject line. Kindly include your full name, full address and telephone number(s) where you can be reached.
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