Technics RS-9900US

Technics RS-690U

1 9 7 6 august 1976
1 9 8 0 1980

Not that the two-box arrangement was a necessity but the RS-9900 was one of the very last overly over-sized beast the 70s ever produced.
It was an all-out effort to make it the best, the biggest, the most impressive, the most... Most !

By 1977, however, down-sizing was already just around the corner (just like the cost-cutters) and the RS-9900 didn't sell that much and is today, unlike the big Naks or Pioneers, a true rarity.
Because the two-box arrangement really wasn't a necessity - market-wise.

As often with late 1970s japanese monsters, we westerners remember them better and, like a few others, the RS-9900 was mainly an export item ; if quite rare for us, it remains a very obscure and barely mentioned über-rarity in Japan.

Even Technics in the Stereo Sound "bible" published in 1978 remained very discrete about it, spending more time talking about the RS-M50 or RS-M85.
Or the RS-1500U series :)

It is however possible Technics kept so discrete about this monster because of the then ongoing development of DD4 : a four direct drive cassette mechanism which finally remained unproduced.
It was to be the most most most, again, but with one BSL direct-drive for each reel drive and each capstan - 2 + 2 = 4.
However, when DD4 would've been ready, 1978, cost-cutters were in and... cost-cutting.

Available in Japan under the RS-690U name.

You can see large "nudies" or both units here here (scroll down the page).

Technics RS-9900US, image 1 Technics RS-9900US, image 2 Technics RS-9900US, image 3
Technics RS-9900US specifications
Title Value
Motors : 1x DD DC brushless for capstan
2x DC Alnico coreless for reel drive
Heads : 1x HFP for record
1x HFP for playback
1x ferrite for erase
Tape speed : 4,8cm/s
Pitch control : ± 5%
Wow & flutter : 0,04% (WRMS)
Wind/rewind time : 70s (C-60)
Frequency response : 25Hz...20Khz (± 3dB ; Type II)
25Hz...18Khz (± 3dB ; Type I)
S/N ratio : 67dB (Dolby ON ; input at max. ; above 5Khz)
57dB (Dolby OFF ; input at max.)
THD : 1,4% (Type II / I tape ; 160nWb/m ; 333Hz)
Inputs : 0,25mV / 600 Ohm...20kOhm (MIC)
60mV / 150kOhm (Line)
60mV / 150kOhm (Through Line ; parallel connected)
Outputs : 0,42V / 47kOhm (Line)
0,42V / 47kOhm (aux.)
0...900mV / 8...125 Ohm (headphones)
Calibration controls : ± 3dB @ 333Hz (play)
± 5dB @ 1Khz (rec)
-50...+100% BIAS (+100% = Type I tape)
± 5dB @ 10Khz EQ
PC : 45W
Dimensions : 48,3 x 19,3 x 37,5cm (drive)
48,3 x 17,3 x 37,5cm (amp)
Weight : 15kg (drive)
9kg (amp)
Accessories : 20-pin connecting cord
6-pin connecting cable
RP-9690 remote control
List price : 298,000¥ (1976)
Technics RS-9900US : 0 topic
(last updated topic shows up first)
page online since : may 2007
page updated : march 2010
page type : LGT / KNB
page weight : 228.21 Kb / 0 b

You must login to access your account.

I forgot my password

Log me automatically on each visit
Hide my online status for this session
> Create an account

  • TVK Talk Forum
  • TVK Museum
  • Specials
  • Timelines
  • Utilities
  • Games