SPECIFICATION SHEET / PPSS-EE

Skeuomorphic relic brought back to life. Bakelite dials. Embossed numerals. Knurled aluminium. No corporate polish. No redesign necessary.

Operational since 1978. Still warm.

ESTONIAN RADIO WORKSHOP · UNIT 0C538

Bench instrument. Restored. Verified.

Configuration

INPUT STAGE

Signal integrity maintained through years of continuous operation. Every connection verified. Every component trusted.

AMPLIFICATION

Vacuum tube warmth. No digital shortcuts. Transformer coils hum at fifty cycles: proof of living current.

OUTPUT TUNING

Impedance matched. Frequency response flat. Built to outlast the companies that made the instruments.

PATCH BAY

Brass contacts, labelled by hand. The useful circuits remain reachable. The ornamental circuits were never installed.

Instrumentation

Output Level
Frequency Response
Signal Stability
Thermal Regulation

Archive Drawer

MECHANICAL

Hand-turned potentiometers. Machined chassis. Tolerance: 0.02mm. Every part still answers to pressure.

ELECTRICAL

Component schematic preserved. Old solder joints visible. Forty-five year capacitors: still within specification.

THERMAL

Passive heatsink. No fan. No noise. Natural convection at three watts continuous duty.