Thirty-year anniversary: EA-230 AutoBias Upgrade
AutoBias Upgrade now available for EA-230
Originally introduced in 1980 and still sought after and celebrated, the EA-230 is a 30-watt per channel stereo vacuum tube amplifier that, according to Stereophile Magazine, "really flies". Owners know that it keeps on flying. Tube life, often spanning decades, is exceptional. Sound quality and performance still excels and remains at ease amongst the finest and very latest high-end audio equipment.
US$300 covers the parts and labor for installation of upgrade only. Costs for any extra work or necessary repairs will incur additional charge. Please contact us双色球杀号定胆360精准科学 for more information and to arrange scheduling and shipping.
webpages for some older berning products are publicly available below. owners manuals and schematics are also available to help those qualified to do repairs.
All David Berning Company products contain voltages that can be lethal, and repairs should only be attempted by persons familiar with special precautions required for working on high-voltage circuits. Most David Berning Company products use switching power supplies, and only fast recovery rectifiers should be used. Products that use switching power supplies can not be brought up in voltage slowly with a variac. Many of the components on switchers are not isolated from the line and some measurements require the use of an isolation transformer.