ST-70 &
AB, ultimate Dynaco ST-70 autobias upgrade kit We are pleased to offer you our
latest upgrade kit, our Dyna-70. This kit will replace the original Dynaco
driver circuit and printed circuit board, using the excellent sounding 6SN7 triode. Tubes are NOT included with the kit! This kit will change the way your
tired old Dynaco ST-70 will sound and look! The kit you are buying will
consist of all the necessary parts to assemble and install the new driver
printed circuit board, and of course the AB-Q-ST70/ST120 Auto Bias module. You
will also need to solder all the parts driver to the printed circuit board. The AB-Q-ST70/ST120 auto bias is pre assembled as it mostly
uses surface mount parts. This is what you’ll get with the
kit: - 1.6mm/0.08” thick printed
circuit board - Russian oil capacitors and other
name brand capacitors - quality metal film resistors - ceramic pcb mount
octal tube sockets -
necessary hardware to install the printed circuit to the amp chassis - fully assembled model
AB-Q-ST70/ST120 auto bias module NOTE: all the parts are loosely
packed in resealable bag. They are not packed into individually sorted parts. The benefits of upgrading your Dynaco ST-70 amp with our Dyna-70AB kit are: - with the auto bias, there no
more having to keep an eye on the output tube bias setting. The auto bias
module will keep the pre-set bias for the life of the power tube! The bias
level is pre-set by us to suit the EL34 family of tubes. - not to mention that your ST-70
amp will look pretty cool with with blue LEDs that shine ! Should a tube fail of the auto
bias module can no longer maintain the preset bias level, the relevant LED will
go out indicating that the power tube needs to be replaced. It is THAT simple! Even tubes that are not well
matched, the auto bias module will maintain each tubes' bias level at the
preset level! So the output stage is always well balanced and held in equal
bias! Please note, we DO NOT accept ANY
returns or refunds of kits that have been shipped, so please make sure you
understand what you are buying, which is an electronic KIT that requires
assembly and soldering. The ST-70 amp is of course NOT included!
Installation and User manual: https://www.audioamp.eu/_obchody/teston.web5.cz/prilohy/2/st-70-ab-ultimate-st-70-octal-6sn7-upgrade-kit-aut-703e42.pdf |