natu-reverb® CG-1 “Church” for Classical Guitar

Sale price¥22,500

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Shipping within Japan : 890JPY
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A fully analog spring reverb unit placed directly inside your guitar body creates warm, natural acoustic ambience — from the instrument itself.


■ Sound Comparison Video

The video plays in the following order:

  1. No reverb

  2. CG-1n installed

  3. CG-1 “Church” (this product) installed



■ How It Differs from the Standard CG-1n

The CG-1 “Church” features additional springs and a larger housing design, delivering a denser and more expansive reverb response than the standard CG-1n.

You’ll also notice enhanced high-end clarity and a wider tonal range.

While the standard CG-1n provides beautifully natural resonance, the CG-1 “Church” is designed for players who prefer a grand, cathedral-like sense of space.

To support the larger reverb unit, the magnetic parts are strengthened for secure mounting.

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Please review the installation instructions before use.
→ View installation instructions
View installation instructions

[Compatible instruments]
It corresponds to a general classical guitar / gut string guitar.
However, it may not be possible to attach it to a guitar with a sound hole diameter of 7 cm or less, or a guitar with a guitar side plate height of 7 cm or less.

[body size, weight]
Size: 11.8cm x 3.8cm x 5.8cm (length, width and height)
Weight: about 120g

[What is included in the product]
CG-1 "church" body, magnet parts set, instruction manual, special case

Featured in "Acoustic Guitar Magazine", one of Japan's most renowned publications.

Attractive reverb

Natu-reverb is a reverb that brings rich resonance to guitars and ukuleles. Only the patented natu-reverb lets you enjoy reverb born from within the instrument itself, without using any electricity. It transforms your everyday, casual playing at home into a special experience, like a recital. It's popular with everyone from beginners to advanced players who value acoustic and analog resonance.

A guitar you can't help reaching for

Improvement requires consistency. And for consistency, it's essential to enjoy great sound effortlessly. With natu-reverb, you can enjoy rich, natural sound the moment you pick up your instrument at home—no amp or effects pedals needed, no modifications to your instrument required. Unlike other products, it's designed to deliver reverberation that feels pleasant to the player's own ears. That's why many customers tell us, “It makes me want to pick up my instrument.”

The authentic resonance of analog

Unlike other products that add digital reverb to sounds picked up by the pickup, natu-reverb adds authentic reverberation directly to the instrument itself, delivering natural reverb. This groundbreaking item was realized by a developer with an extraordinary obsession for reverb, after countless simulations and prototype tests. Experience the completely acoustic reverb you won't find anywhere else.

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