BWS Consulting: Exclusive Vacuum Tube Audio Design

I Repair/Customize High End Tube And Solid State Electronics

I Provide Audio Engineering Services & Home Theater Service

Call 703-536-3910

Please Review All Directories And Sub-Directories, I Have Affordable Introductory Amplifiers And Receivers.

I Service: Turntables, High End CD Players, Amplifieres, Pre-Amplifiers, Loudspeakers And More

Please Request Services For Home Theater Systems And Audio Gear With The Contact Forms Menu


Paypal, Check or Money Order Accepted For Payment


Dynaco Amplifier Upgrades

I have been performing upgrades and total redesigns of the St-70 and Mk III, Dyna Company amplifiers, since 1980s when I introduced my first custom products. 

These amplifiers make an excellent base for many redesigns.  This St-70 has been totally redesigned and features the Bendix/Mu 3D21 as the power output tube, a three tube front end-driver section, multiple power supplys and mil spec parts. The Model Amplifier Shown, Is Available For $3800.00 New Build - With A Cage.

I also provide redesigns using the 7236 and 6080B dual triodes, and the original EL-34.

Please fill out a request form or call me at 703-536-3910.