Heathkit W-7 Rebuild

Bruce Brown explains his successful method of rebuilding a vintage W-7 tube amplifier from Heathkit. As the first power amplifier that broke $1 per watt barrier of listening power, the Heathkit W-7 was a major breakthrough for audiophiles. Introduced in 1958, it carried a list price of $54.95. This article was originally published in audioXpress, May 2007.

The new edition from audioXpress is available, and there are many reasons to quickly get to it. Our main cover article is an in-depth review of the Benchmark AHB2 Stereo Power Amplifier by Gary Galo. If you are interested in amplifiers, this review will clearly explain why you should listen to this one. On another serving from our series on Wireless Audio development platforms we focus on CSR. And much more…

Erno Borbely is not a man given to bragging about his accomplishments. But from the venerable Hafler DH200 to today’s high-performance all-FET amplifiers from Borbely Audio, he has left his mark on 40 years of technological audio advancement. Jan Didden looked him up in his home close to Munich, Germany, and talked with him about audio and other tidbits.

Radial decided to bring Hafler back in the market. After acquiring the brand from Rockford Corporation, earlier this year, Radial started working in preparation to bring back legendary Hafler amplifiers and designing a new range of Hafler branded preamps and headphone amplifiers. Studio monitor’s to follow?