| Title | Value |
|---|---|
| Phono 1 / 2 / 3 inputs : | 2mV / 33kOhm, 47kOhm, 100kOhm selectable |
| 100pF, 330pF selectable (phono inputs 2 & 3 with level pot) | |
| Tuner input : | 200mV / 70kOhm |
| Auxiliary 1 / 2 inputs : | 200mV / 70kOhm (with level pot) |
| Tape 1 / 2 inputs : | 200mV / 50kOhm |
| Max. input : | 350mV (Phono 1/2/3, 1Khz, RMS) |
| 35V (tuner, aux) | |
| PRE outputs 1 / 2 : | 1V / 4KOhm (output #2 with level pot) |
| Tape output 1 : | 200mV / 80kOhm (RCA) |
| Tape output 2 : | 200mV / 70kOhm (DIN) |
| THD : | 0,05% (1Khz, 5V output) |
| 0,02% (1Khz, 1V output) | |
| S/N ratio : | 63dB (phono, RMS) |
| 75dB (phono, IHF-A) | |
| 86dB (lines, RMS) | |
| 96dB (lines, IHF-A) | |
| Frequency response : | 15Hz...100Khz (+0 / -1dB ; lines) |
| 20Hz...20Khz (±0,3dB, RIAA) | |
| SEA frequencies : | 32 / 63 / 125 / 250 / 500Hz |
| 1 / 2 / 4 / 8 / 16Khz (selectable between 12 / 16 / 20Khz) | |
| Defeat circuits : | SEA defeat switch |
| 14dB inter-stage amplification defeat switch | |
| Loudness : | +8dB at 100Hz & +4dB at 10Khz (vol. -30dB) |
| Muting : | -20dB |
| Subsonic filter : | 12dB/octave at 18Hz |
| High filter : | -6dB/octave at 9Khz |
| Headphones : | suitable for 8...200 Ohm |
| Componentry : | 102 transistors |
| 28 diodes | |
| 4 ICs | |
| AC outlets : | 2x switched |
| 2x unswitched | |
| Dimensions : | 57,8 x 16,25 x 26,8cm |
| Weight : | 8,7kg. |
| List price : | 170k¥ (1975) |
JVC JP-S7
october 1975
1977
Xtra- rare preamplifier adorned with very interesting looks which make it look like a 1970s gadget.
Said looks survived, in simplified form, until the A-X9 in 1981 and as for tha X9 the front plate isn't made of plastic, at all, but of a single diecast slab of ALuminium.
The Victor JP-S7 isn't a gadget - at 170,000¥ in 1975, it wasn't meant to be ; the accompanying power amplifier, JM-S7, was equipped with NEC's V-FET and cost the near- TC-880-2 sum of 230,000¥ - high-end indeed.
Visually striking is the volume slider which is more technical than it may seem : it hides four gangs, two at the buffer output and two at the input for reduction of residual noise and better linearity at low listening levels.
Among the many features, the phono stage is MOS-FET charged and operates in Class A.
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