Miller Audio LLC, based in Dallas, TX, is a privately held, audio electronics design business. We manufacture specialized vacuum tube audio equipment for vintage and new production products. We develop and manufacture audio upgrades for vintage vacuum tube amplifiers, integrate automatic bias circuit designs to enhance and extend the service life of vacuum tubes. We manufacture upgrade audio kits, and design and build complete audio amplifiers, ready for use in home or commercial applications.
Dallas-Fort Worth Metropolitan Area, TX, USA
4255 Peppermill Lane Dallas, TX 75287
972-693-5116
Introducing the Dyna-70 Ultimate Upgrade Kit for Dynaco ST-70's
The Dyna-70 Ultimate Upgrade comes in two versions- Manual or Automatic Bias. For those on a budget, we offer 4 individual bias controls you manually adjust approximately every 3 – 6 months. The optional Auto Bias (AB) system is integrated with our Dyna-70 circuit card, helping to extend tube life and giving an instant visual indication of the health of your tubes. If an LED does not light, it’s time for a new tube.
The Dyna-70 Ultimate upgrade is based on the 6CA7 / EL34 power tube, just like the original ST-70. If you have a good set of 6CA7 / EL34 tubes in your original ST-70, they will work just fine with the Dyna-70 Ultimate Upgrade kit.
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