Hohner Symphonic 31

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This product is Vintage or Discontinued

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Page last updated Oct 22, 2025

Pricing and availability

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Price

Average Price: $607

Budget/Beginner

$799

$2000+

Price Tier

In the Organs category, Hohner Symphonic 31 is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

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Description

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A great electric organ from the 1960s.

Product specs

Brand	Hohner
Model	Symphonic 31
Finish	White
Year	1960s
Made In	Germany
Categories	Keyboard Synths, Organs
Analog / Digital	Analog
Built-In Speakers	No
Key Size	Full Size
Number of Keys	49 Keys

FAQs

How many keys does the Hohner Symphonic 31 have?: The Hohner Symphonic 31 features 49 full-size keys, providing a comfortable playing experience similar to that of a traditional piano.
Is the Hohner Symphonic 31 an analog or digital instrument?: The Hohner Symphonic 31 is an analog instrument, offering a classic and warm sound characteristic of vintage organs.
Does the Hohner Symphonic 31 have built-in speakers?: No, the Hohner Symphonic 31 does not have built-in speakers, so it requires external amplification for sound output.
What era is the Hohner Symphonic 31 from?: The Hohner Symphonic 31 was produced in the 1960s, making it a vintage piece with a distinct classic appeal.
What is the finish of the Hohner Symphonic 31?: The Hohner Symphonic 31 comes in a white finish, offering a clean and classic aesthetic that complements its vintage design.

Videos

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Hohner Symphonic 31

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Hohner Symphonic 31 Demonstration

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Hohner Symphonic 31.

Features and functionality

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The Hohner Symphonic 31 uses a divide-down architecture similar to top-octave synths, employing high-frequency oscillators and binary counters for note generation.
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The Hohner Symphonic 31 uses individual circuits per note, making repairs complex due to the extensive circuitry involved.
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Setup and maintenance

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Initial issues with non-functioning E-keys can be resolved through technical repair, often involving power and audio-out adjustments.
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Cleaning key contacts is crucial to prevent crackling, requiring time-intensive work and precision to avoid damaging old, brittle boards.
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Diagnosing issues with an oscilloscope is essential for clean power supply verification, as dirty power can exacerbate existing problems.
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Replacing broken capacitors is a common repair task, but improper handling poses risks of electrocuting oneself due to remaining charge.
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Comparisons

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Unlike the hefty Hammond B3, which requires multiple people to transport, the Hohner Symphonic 31 is more manageable, weighing approximately 25-30 kg.
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User experience

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Owners find the physical weight of combo organs significant, affecting transportation ease compared to other lighter instruments.
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Owners report significant noise and crackling, suggesting potential issues with oscillators rather than just dirty key connections.
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Value and pricing

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In Germany, 60s Hohner organs, including the Symphonic 31, are relatively affordable compared to costly Vox, Farfisa, and Gibson organs.
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Other

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Documentation for the Symphonic 31 is scarce, making disassembly and repairs challenging without extensive note-taking and photography.
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Vintage Synth Repair and Mods groups are recommended resources for schematics and repair advice from experienced technicians.
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