tubes4hifi home page
 tubes 4 hifi
 "the path of least resistance is through a vacuum"

HOME Dynaco mods amplifiers custom amps Service & Mods RETURNS   Downloads

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 30 years now!!

 


amplifiers

ST70 - VTA70 amplifier

ST120 - VTA120 amplifier

M125 monoblocks


Roy's pages

ST70 mods & upgrades

MK3 monoblocks

custom amps

phono only preamp kits
PH14 PH16

line stage preamp kits
SP10 SP12 SP14

assembled SP14 with remote

premium speaker cables 10'
$55 PAIR + $10 shipping

14g dual cable with gold-plated bananas
 
compare to Audioquest type 4 at $280 !!

premium speaker cables 15'
$60 PAIR + $10 shipping

14g dual cable with gold-plated bananas
 
compare to Audioquest type 4 at $350 !!

Digital Voltmeter


check your bias !
one for $14 free shipping
 
two for $22 free shipping
 

premium power cord 5 feet $55
(compare at $100+)

RCA-RCA stereo pair 5 foot interconnect $55
(compare at $80+)


click here to go to our downloadable Dynaco manuals page


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"