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tubes 4 hi fi has been in business since 1988, created by Roy Mottram, and 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.
please note - this is a hobby for all of us, and so sometimes our "real" jobs
may interfere with giving you "instant" service, but we strive to ship your order within a day or two in MOST cases!
our famous VTA70 driver PCB upgrade for your amp!
now celebrating 20 years of selling this modification/upgrade for the ST70 !!
we are also now offering your choice of our classic hi-gain version with 12AT7 tubes,
or a lower gain version using 12AU7 (or even better 12BH7 tubes, which has
revised resistor values to optimize the circuit for these lower gain tubes
click here to go to our ST70 page
click here to go to our MK3 - MK4 page
click here to go to our Preamp page
click here to go to our downloadable Dynaco manuals page
our dealer on the east coast is Bob Latino. . . check out his goods here . . .
for BRAND NEW Dynaco ST70 kits OR ready-built amps, click here!! you can send email to Bob Latino directly here for info on these complete kits or amps . . .
Written Articles
ST70 modifications
comparison test - Glass Audio magazine article
send us email at: info@tubes4hifi.com
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