Aiwa 6900MK (ca. 1979)
Little is documented about the Aiwa 6900MK beyond a handful of period advertisements. What the record shows: this was a cassette deck marketed as the AD‑6900MK II, part of Aiwa’s late-1970s push into metal‑tape recording. Ads from the period present it as one of three “sophisticated metal‑capacity decks” alongside the AD‑6700 and AD‑L40. Audio (November 1979, p.87) and HiFI‑Stereo (December 1979, p.92) carried Aiwa’s own advertising copy claiming a frequency response of 20–20,000 Hz at –20 dB recording, a wireless remote control for operation from across the room, and Aiwa’s “Double Needle Meters” for simultaneous peak and VU monitoring. No independent lab measurements or editorial reviews of this model have turned up. All known details come from manufacturer advertisements, and the deck’s exact production run length, original price, and real‑world performance remain unrecorded.
- Product type: Cassette deck (advertised as AD‑6900MK II)
- Metal‑tape capable
- Wireless remote control
- Double Needle Meters (peak + VU)
- Claimed frequency response: 20–20,000 Hz (at –20 dB recording)
- Year of advertising appearance: 1979
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