Hitachi C-70

Not much is documented about the Hitachi C-70. The best record in the archive is an equipment profile in Audio (January 1983, p.52), which carried a set of manufacturer's specifications for the model:

• Frequency response: 20 Hz to 20 kHz, ±0.5 dB
• Dynamic range: more than 90 dB
• S/N ratio: more than 90 dB
• Channel separation: more than 60 dB
• Distortion: 0.03%
• Wow and flutter: not measurable

Past that spec sheet, the trail goes cold. The text around the profile didn't survive the archive's OCR intact, so even the product category isn't clear from this record. No production years, original price, or design details are documented. Anything more would be guesswork.

eBay Listings

Yamaha Natural Sound Stereo Control Amplifier C-70

$740

Yamaha C-70 replacement for ALPS tone control switch SW503 r

$79.95

Extron XPA 2003C-70V 3-Channel Combo Amplifier 200W

$99.00

LOT of 10 Soundcore by Anker Headphones/Earbuds - Tested(C-7

$260

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