TECHNICS SH-9020 RARE Peak Average VU Meter Unit Vintage 1977 Refurbished Good Look

Technics SH-9020

Peak Average Meter Unit (1977-81)

The Technics SH-9020 is a high-precision analog peak and average measurement unit, manufactured by Technics between 1976 and 1981. Designed to be integrated into professional high-fidelity systems, it allows you to monitor signal levels with great accuracy at different points of an audio chain. The following are the most relevant technical specifications:

Description

Technics developed the SH-9020 peak/average meter unit to give you the signal and output information you need to make absolutely sure your components are delivering the high fidelity performance that you demand.

The SH-9020 functions in three modes: Peak, with an unheard of attack time of 100psec, Peak Hold, and Average at a level of performance way above VU meter industry standards.

With this capability, you can expect to realize a degree of high fidelity sound reproduction that until now existed mostly in theory.

Technical Specifications

• Operating modes: Peak, Peak Hold, and Average.

• Inputs:

• Input 1 & 2: 20 dBm (7.75 V) / 47 kΩ (0 dB sensitivity); 0 dBm (0.775 V) / 47 kΩ (+20 dB sensitivity).

• Input 3: 100 W / 10 kΩ (0 dB sensitivity); 1 W / 10 kΩ (+20 dB sensitivity).

• Sensitivity selector: 0 dB and +20 dB.

• Measurement range: from +10 dB to -50 dB.

• Indication accuracy:

• Inputs 1 & 2: ±1.5 dB.

• Input 3: ±2 dB.

• Frequency response:

• 10 Hz to 20 kHz ±1.5 dB (between +10 and -40 dB).

• 10 Hz to 10 kHz ±3 dB (below -40 dB).

• Response times:

• Attack time:

• Average: 330 ms.

• Peak and Peak Hold: 100 μs.

• Recovery time:

• Average: 250 ms (from 0 dB to -20 dB).

• Peak: 750 ms (from 0 dB to -20 dB).

• Peak Hold: retains peak for at least 25 minutes (from 0 dB to -3 dB).

• Power supply: AC 110/120/220/240 V, 50/60 Hz.

• Power consumption: 14 W.

• Dimensions: 450 mm (W) × 92 mm (H) × 378 mm (D).

• Weight: 5.6 kg.

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🧩 Key Features

• Display modes: Allows switching between peak, peak hold, and average level monitoring, offering flexibility in signal observation.

• High accuracy and speed: With a 100 μs attack time in peak mode, it is extremely responsive to fast transients.

• Wide measurement range: Covers from -50 dB to +10 dB, suitable for various audio applications.

• Professional design: Part of the Technics “Professional” series, alongside the SU-9070 preamplifier and SE-9060 amplifier.