Your best source for reliable DC Power Supply, call us at 408-622-9851 for product questions and ordering.
Regulated DC Power Supply
Hot Air Rework Station
Digital Oscilloscope
Battery Charger

Mastech is an established name in variable DC power supplies with over 20 years of experience in making high quality DC power supplies. Mastech power supplies are widely used by the engineering, scientific, and hobbyist community. Acifica, Inc. is the biggest volume seller of Mastech power supplies in US, and we carry the widest selection than any other sellers. All of the products are inventoried in our warehouse in California, so that you will typically get your order within a week from ordering. In the rare cases when a product is out of stock temporarily, we will notify you promptly.

For new developments, please check out the official Mastech Blog.

Our contact information

By email:

By standard mail:
Acifica, Inc.
2345 Harris Way
San Jose, CA 95131

By phone:

By Fax:
We offer 100% price match and here is how it works:

1) You found a qualified product at a lower price. Please make sure that the brand and model number is identical.

2) Request a Price Match by calling us at 1-408-622-9851 or email us at

3) We will match the price. We'll check the lower price and match or beat the price of any qualifying items.

Ordering Information:

We use PayPal ExpressCheckout for orders placed directly online, you do not need to have a PayPal account to place an order using your credit card.

To order by credit card directly with our representatives, please call us at 408-622-9851 or fax us at 408-498-4558.

To order by check or money order, please send payment with note to: Acifica, Inc., 3241 Simberlan Dr, San Jose, CA 95148

Your note should include your shipping address, product you are ordering, and your phone number or email address for order confirmation.

Shipping Information: Orders typically will be shipped within 24 business hours from the time your payment is received.

Refund, Returns and Cancellation Policies:

Defective items will be exchanged with brand new items. All returns must have prior authorization, and must be sent back within 2 weeks of receiving the goods. Shipping is non-refundable.
Dependable Power Supply, Superior Service!