Kenwood LO-7M
Little is documented about the Kenwood LO-7M. What the record shows comes almost entirely from period advertisements and a single classified listing. There are no published reviews or surviving manuals to go on.
The LO-7M was a monaural power amplifier, part of Kenwood's "Audio Purist" separates series that also included the L-07C preamplifier. A classified ad in Audio (April 1985, p.129) listed the L07C preamp at $450 and two LO-7M mono amps at $600 each, which suggests they were sold as a three-piece system. Kenwood's own advertising in early 1980 called the LO-7M "The Ultimate Amp" and claimed a frequency response from DC to 600,000 Hz (+0 -3 dB). That is a huge bandwidth figure, and it appears in multiple print ads across Audio and HiFI/Stereo magazines in 1980-1981. The ads said a special team of top Kenwood engineers had "re-invented the amplifier" using sophisticated circuit innovations aimed at audibly distortion-free reproduction.
Beyond these advertising claims and the 1985 used-price reference, no detailed specifications have been located. That means no power output, distortion figures, dimensions or weight. The LO-7M remains an obscure model in Kenwood's high-end history. Its engineering was promoted heavily, but most of its technical documentation has been lost.
- Type: Mono power amplifier
- Series: Kenwood Audio Purist
- Associated component: L-07C preamplifier
- Claimed frequency response: 0 Hz – 600,000 Hz (+0 –3 dB, per advertising)
- Period used price (1985): $600 each (classified ad)
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