Dynaco ST-70 Upgrades and prices
Prices below are valid with my restoration services
If you would like to upgrade your RCA
input jacks
with a new assembly using gold
plated jacks that are
wider in space to accept the
more modern RCA cables,
the additional price is $22.00 installed.

Bias Balance Control Upgrade is a bias circuit upgrade for
equalizing
the bias current between each pair of output tubes. No need
for matched tubes. Installed price is $36 per channel

Upgraded Speaker Terminals using dual binding post
wired for 8 ohm on your audio transformer.
Price installed $13.50 each side installed.

Upgraded Speaker Terminals
using four 5 way banana posts,
price is $22.00 each side installed.

Upgraded 3 wire line cord. Note, possible
ground loop hum may occur if your
input device (preamp, CD player etc.) also has a 3 wire line cord.
Additional cost is $10.00
installed.

Other part
replacement prices
Replacement
on/off
switch $6.50 installed
Replacement mono/stereo switch
$6.50 installed
Replacement fuse socket $6.00
installed
Replacement same style original
Dynaco RCA Jacks $15.00 installed
Replacement original style Dynaco speaker terminals $7.00 each installed
Replacement Dynakit ST70
label for your cage $10.00
Sovtek 5AR4 tube $18.00
Electro-Harmonix EL34 tubes
$35.00/pair
Electro-Harmonix EL34 tubes
$62.00/quad
Svetlana EL34 tubes with brown base $66.00/quad
New Old Stock 7199 tubes
$35.00/each
Pair of RCA input shorting plugs $3.00
Please ask about other upgrade
options and prices.
I can replace your original printed circuit board with
upgraded boards from DIYtube.com, VTA and others.
Email address is salb203@optonline.net
I use and recommend high quality upgrade and
restoration parts from Dynakitparts.com
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updated 10/05/2009