Denon TU-7.5 (1991–1996)
The TU-7.5 is a compact FM/AM tuner from Denon's Point Component Series of the early-to-mid 1990s. The same family included the PMA-7.5 integrated amplifier and CDA-5.5 CD player. It was small, just 250mm wide and 75mm tall, and it weighed 2.5kg. It was meant to sit alongside its matching siblings in a modest stack. It still packed in a 30-station random preset memory and a low-impedance output circuit (600Ω or less) to send a clean signal to any amplifier.
The tuner was built around the Japanese FM band (76.0-90.0 MHz) with a practical sensitivity of 1.0 µV/75Ω (11.2 dBf), and it covered AM from 522 to 1629 kHz. It also supported AM stereo, which was something of a niche feature even in its day. The front panel is minimal - a handful of preset buttons, a display, and little else - in keeping with the small, uncluttered Point Component look.
The system integration is one of the more interesting details. The remote control supplied with the PMA-7.5 amplifier could turn the TU-7.5 on and off and recall preset stations. The tuner also had two timer functions (Everyday and Sleep) plus a switched AC outlet linked to the system's power and timer functions, for alarm playback or timed recording. Three variants appeared over the model's run: the base TU-7.5 (¥33,000, around 1993), the TU-7.5S (¥36,000, around 1993), and the TU-7.5E (¥36,000, around 1996). The Tuner Information Center dates the base model to 1991 at $300. There was also a TU-7.5L variant in the 7.5L series lineup alongside the PMA-7.5L amplifier and DCD-7.5L CD player, though little is documented about it.
The Tuner Information Center flags the TU-7.5 as "rare," and it has a small but devoted following among vintage Denon collectors. A Thai YouTube review calls it "a tiny but great tuner," and it was built in Japan.
Known specs:
- FM/AM tuner, 76.0-90.0 MHz FM / 522-1629 kHz AM
- FM practical sensitivity: 1.0 µV/75Ω (11.2 dBf)
- AM practical sensitivity: 18 µV
- S/N ratio: 78dB stereo, 82dB mono
- THD: 0.15% stereo at 90% modulation, 0.08% mono at 100% modulation
- Stereo separation: 45dB at 1kHz
- 30-station random preset memory
- Output: low impedance, 600Ω or less
- Dimensions: 250 × 75 × 312 mm; weight 2.5kg
- Power consumption: 9W
Service manuals are available from several independent sources, which is a good sign for keeping one running. Documentation elsewhere is thin, and most of what's recorded comes from a single database.
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