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 tubes 4 hifi
 "the path of least resistance is through a vacuum"

HOME Dyna ST-70 Dyna PAS-3 Service & Mods Downloads Bookstore

Tubes 4 HiFi is also known as Vacuum Tube Audio

Our best known product is the VTA ST70 PCB modification for the Dynaco ST-70 amplifier,
that first appeared in a Glass Audio magazine article in 1989.

You can purchase any of our products here from these web pages,
making payment with a credit card through PayPal, or sending us a money order.
Thanks for your support!

Please contact me at anytime to order these items or to inquire about other products.

send email to

our famous VTA70 driver PCB upgrade for your amp!

we've been selling this modification/upgrade for the ST70 for 26 years now!!

NOTE: I'm back from vacation, order now!

click here
for our new BOOK store page
also some audiophile CDs, tubes, tools, connectors, and interconnects

ST70 - VTA70 amplifier

ST120 - VTA120 amplifier

MK3 monoblocks

M125 monoblocks

PAS3 preamp

preamp kits
SP9 SP12 SP14

PREMIER assembled/tested
plug & play preamps

phono only preamps
PH6 PH10 PH12 PH14 PH16

SP14 by Don

click here to go to our downloadable Dynaco manuals page

our dealer on the east coast is Bob Latino. . . check out his BRAND NEW Dynaco ST70 kits OR ready-built amps
including the high powered stereo ST120 tube amp and new M125 monoblocks click here!!

you can send email to Bob Latino at: for info on these complete kits or amps .

visit our "Dynaco Tube Audio Forum"

our Glass Audio magazine article comparison test of ST70 modifications

send email to ROY at:

check out this FANTASTIC travel guide - save HUGE $$ on travel

Imagine being able to fly anywhere in the world as often as you want for next to nothing!
From taking your family to Europe, flying first class, to sleeping in an overwater bungalow in Maldives, itís all possible.
Money is the number one reason why people donít travel more and this book shows you how to take money out of the equation.
It will teach you how to master frequent flier and hotel loyalty programs and use those system to gain hundreds of thousands
of points per year before even stepping foot on an airplane or in a hotel prior. The strategies in this book are what allows me
to travel so often on a budget and will get you out of your house faster, cheaper, and in comfort!
Thereís nothing like starting your trip in a first class suite that only cost $10!

 tubes 4 hifi
 "the path of least resistance is through a vacuum"