Sony PS-B80

November
1 9 7 8 november 1978
1 9 8 2 1982

Here is a really complex beast - more of a showpiece than anything expected to sell. And given the price that was asked, Sony indeed didn't sell that many.

However, the PS-B80 was to embody the future of LP replay... if that format had had a future beyond 1983.

Using the PS-B80 is a true joy : the ECT tonearm does wonders and so does the VFB system, the electronic stylus force control, the X-Tal lock, the Magnedisc servo control (barium-ferrite imprint read by a magnetic head), the electronic tonearm damping and even the included stylus cleaner.

Today, only one problem can arise : if the electronics go haywire... you're cooked. Some units still function fine, some don't and there is no way to tell if a PS-B80 will go crazy or not. A fate which befalls all electronica-filled components, Sony or not.
The inside is filled with boards and very abundant wiring ; big motor, big heatsinks, all-metal mechanism and huge SBMC non-resonant composite base.


The PS-B80 was however a grand engineering feat when developed in '77 and '78 which paved the way for all later "sensing" or "active" tonearms from JVC, Yamaha or Denon.

Its smaller, later siblings (PS-X600, PS-X700, PS-X75 and PS-X800) made and still make many music listeners very happy.

From a 1979 japanese catalog, showing the original wood-veneered plinth - rare version.
The metallic silver-ish is much much more common.

From the USA 1979 dedicated catalog, showing the original wood-veneered plinth - rare version.
The metallic silver-ish is much much more common.

The original Biotracer tonearm...

... zoom in !

Stylus force setting - useful to have so conveniently accessible from the very front of the turntable... even if it isn't something used all that often !

#

Speed accuracy :
Wow & flutter :
S/N ratio :

Platter :
Speeds :
Startup time :
Tonearm balance :
Tonearm length :
Tonearm effective length :
Overhang :
Stylus force :
Anti-skating :
Cartridge/headshell :

Cable output capacitance :

Dimensions :
Weight :

List price :

± 0,002%
0,02% (WRMS)
78dB (DIN-B)

32cm / 2,2kg
33 1/3 & 45rpm
1/4 rotation
static
32,5cm
23,5cm
14mm
0,5...3g
0,5...3g
12...23g or 23...34g

45 pF/m

50 x 17,5 x 43cm
15kg.

200,000¥ (1979)


FEATURES
> electronic tonearm with Velocity Feedback
> electronic stylus force with digital LED readout
> automatic eelectronic anti-skating compensation
> automatic tonearm balancing

> electronic tonearm damping
> automatic record-size sensing
> automatic shutoff at end of side
> Litz-wire tonearm leads
> gold-plating at all contact points

> brushless-slotless BSL direct-drive motor
> Magnedisc servo control with multi-pole pickup head
> Quartz X-Tal Lock speed reference
> non-resonant SBMC cabinet
> Fluid-filled platform insulators
> Zinc diecast tonearm base

> built-in stylus cleaner
> memory control indexes tonearm to pre-assigned spot

My own (ex-) PS-B80

Sony PS-B80 users area - Image n°1

Sony PS-B80 users area - Image n°2


The inside is very, very, complex - big trafo, big motor, big heatsinking, abundant wiring.
The only let-down is the plinth itself which is a mere thin surround added around the SBMC base - at 200,000Y, this was a bit cheap.
You can see the sylus cleaner motor angled under the beige PCB.

Sony PS-B80 users area - Image n°3

Sony PS-B80 users area - Image n°4

Above and below : the Biotracer tonearm's mechanism (no plastic here !) and "rotary shutter".
The blue coil is part of the horizontal linear motor.

Sony PS-B80 users area - Image n°5

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