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

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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 info@tubes4hifi.com

our famous VTA70 driver PCB upgrade for your amp!

 

we've been selling this modification/upgrade for the ST70 for 29 years now!!

 


Bob's amplifiers

ST70 - VTA70 amplifier

ST120 - VTA120 amplifier

M125 monoblocks


Roy's pages

ST70 mods & upgrades

MK3 monoblocks

PASSIVE "preamp"

phono only preamp kits
PH14 PH16

line stage preamp kits
SP12 SP13 SP14

assembled SP14 with remote

NEW ! Auto-Bias circuit, eliminate checking and setting bias

small PCB to install in your ST70 or ST120 amp, never bias your amp again!
Practically a guarantee to never have an output tube failure $110
 

NEW ! Auto-Bias circuit, eliminate checking and setting bias

small PCB to install in your MK3 or M125 amp, never bias your amp again!
Practically a guarantee to never have an output tube failure $180 pair
 

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: Bob01605@aol.com 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: info@tubes4hifi.com

 

 



 

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