RSF Kobol Expander

$249.00 Price Tier: Budget

2 Critic Reviews

0 wishlisted

0 saved

Page last updated Mar 31, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated January 14, 2026.

Store

Reviews

Price

Perfect Circuit

$249.00

View Deal

Average Price: $249

Budget/Beginner

$500

$1501+

Price Tier

In the Synthesizers category, RSF Kobol Expander is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

Budget

Standard

High-end

^* Product prices and availability are updated by Equipboard every 24hrs and are subject to change. Equipboard may receive compensation for purchases made at participating retailers linked on this site. This compensation does not affect what products or prices are displayed, or the order of prices listed. For more information, please refer to our affiliate disclosure.

Description

Edit description

Unleash the power of classic analog synthesis with the RSF Kobol Expander, a legendary synthesizer module that has captured the hearts of musicians and producers alike. Known for its distinctively rich and warm tones, the Kobol Expander is a piece of music history that blends seamlessly into modern setups. This synthesizer is an iconic tool for those who appreciate the unique textures of analog oscillators and the depth of modular synthesis capabilities.

The RSF Kobol Expander is celebrated for its intuitive layout and versatile sound-shaping options, making it an invaluable addition to any sound designer's collection. With its robust build and vintage charm, this module remains a staple in the synth world. Its dual voltage-controlled oscillators offer a broad palette of sonic possibilities, from deep basses to soaring leads. The Expander also features a multitude of patch points, making it ideal for modular integration and experimentation.

Whether you're crafting cinematic soundscapes or cutting-edge electronic tracks, the RSF Kobol Expander offers the flexibility and expressiveness that only an analog synthesizer can provide. This module's timeless design and functionality make it a highly sought-after piece for both collectors and active musicians.

Key Features:

Dual voltage-controlled oscillators for rich, analog sounds
Extensive patch points for modular synthesis integration
Classic analog sound with modern adaptability
Intuitive interface for seamless sound design
Ideal for both studio and live performance settings
Compatible with a wide range of modular systems

Videos

Add video

Telekom Electronic Beats TV

RSF KOBOL PRESENTED BY THOMAS P. HECKMANN

Telekom Electronic Beats TV

A Dangerous Minute: RSF Kobol + Analogue Solutions Oberkorn Sequencer (Depeche Mode)

rezfilter

RSF Kobol Expander

splitradix

Reviews

Add review

Critic Reviews

RSF Kobol Expander | Vintage Synth Explorer

vintagesynth.com

The RSF Kobol Expander is a unique piece of synthesizer history, offering rich analog sounds and innovative features such as continuous waveform modulation. However, its compact design and limited production numbers make it rare and expensive, potentially off-putting for budget-conscious musicians. The Expander’s lack of a keyboard may deter those seeking a more hands-on approach. While it has attracted notable users and delivers excellent sound quality, its scarcity and price may limit its accessibility to aspiring synth enthusiasts.

neutral

Full Review

RSF Kobol Expander (EMM Mar 83)

muzines.co.uk

The RSF Kobol Expander stands out with its unique capability of allowing external control over nearly every parameter, making it a versatile addition for modular synth enthusiasts. Its two variable waveform VCOs and extensive filtering options open the door to diverse sound creation. However, it does have some integration limitations with certain brands, which may frustrate some users. Despite this, its affordability and high-quality sound synthesis make it a compelling choice for those looking to explore innovative sonic landscapes without breaking the bank.

positive

Full Review

Add review

Based on 0 Reviews and 0 Ratings

5 star

4 star

3 star

2 star

1 star