Optonica - ST-1616 HB Tuner

On sale Optonica ST‑1616, high‑quality FM/AM tuner from the Optonica premium series (Sharp).

An elegant component, with a classic 70s design, perfect for vintage systems and for those seeking a precise, stable tuner with superior performance.

The unit is fully functional, tested and in excellent aesthetic and technical condition as you will see from the video I’m linking: https://youtu.be/sO_LV9WTloI

The frequency selector has a scrape as you’ll see in the photo. Ideal for collectors, vintage hi‑fi enthusiasts, or to complete the Optonica series. In the ads you’ll also find the SM-4646 amplifier.

Key features

Stable and clean FM/AM reception

High‑quality circuits with PLL stereo demodulator

Dedicated functions: FM muting, High‑blend, Air‑check calibrator

Technical details:

FM section:

Tuning range: 87.6 – 108 MHz

Sensitivity (30 dB S/N): 1.6 µV (40 kHz deviation)

S/N ratio: 62 dB (40 kHz deviation)

Distortion: 0.5% (mono), 0.5% (stereo)

Stereo separation: 40 dB (1 kHz)

Image rejection: 80 dB (at 98 MHz)

IF rejection: 80 dB (at 98 MHz)

Audio output: 200 mV (400 Hz, 30% modulation)

AM section (MW/LW):

MW range: 520 – 1620 kHz

LW range: 150 – 370 kHz

Sensitivity: 450 µV/m (MW), 450 µV/m (LW)

Image rejection: 36 dB (MW @ 1400 kHz), 35 dB (LW @ 340 kHz)

IF rejection: 40 dB (MW @ 1000 kHz), 32 dB (LW @ 340 kHz)

General features:

System: Superheterodyne FM/MW/LW

Selectivity: 54 dB

Capture ratio: 2.0 dB

AM suppression: 45 dB

Special circuits:

PLL stereo demodulator with pilot cancellation circuit

FM muting

Air‑check calibrator

High‑blend circuit

Semiconductors:

3 ICs

1 FET (dual‑gate MOS)

10 transistors

11 diodes (1 Zener)

1 LED

Audio output: 250 mV (40 kHz deviation)

Power and consumption

Power supply: AC 110/220/240 V, 50/60 Hz

Power consumption: 100 W

Dimensions and weight

Width: 442 mm

Height: 144 mm

Depth: 267 mm

Weight: 4.7 kg