Martin Seibold TSE 12 Tone Stability Enhancer for Bass Trombone and Tuba

Tone Stability Enhancer for Bass Trombone with 2 Rotary Valves and Tuba (Universal)!
  • Effective connector between the 1st and 2nd valve
  • Valve spacing: approx. 12 mm
  • Stabilizes and centers the tone, more volume
  • Easier and more secure response
  • Simple installation (no tools needed)
  • Made in Germany
59€
All prices include VAT
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Standard Shipping
free
Delivery time 1 - 2 working days
Priority Shipping
+ 0,99€
Shipping on 12.10.2026
Express Shipping
+ 5,90€
Delivery on Tuesday, 13.10.2026, if you order within 2 Days 51 Min. 
Shipping and Delivery
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Small Stabilizer, Big Sound!

The tone stabilizer from Martin Seibold is screwed in as a connecting intermediate piece in the valve cluster of the instrument. The sound becomes fuller and purer thanks to the Tone Stability Enhancer (TSE). The tones respond more easily and lock in better, which in turn makes the player perform more confidently and securely. The tone stabilizer is hardly noticeable in weight and can be mounted almost invisibly on the instrument due to its compact dimensions.

Easy Installation

For installation, unscrew the knurled screw from the TSE. Place the threaded part from behind onto the valve casing as shown in the sketch (see image 2) and hand-tighten both parts together using the knurled screw so that the TSE rests on both valve casings.

About the Manufacturer

The idea for the Tone Stability Enhancer comes from Martin Seibold, who has made a name for himself as a supplier of small parts for instrument makers. His company is based in Baiernrain, a district of the Upper Bavarian community of Dietramszell. Martin Seibold is especially known as the inventor of the established Minibal ball joint, which he introduced in the mid-1990s.

Innovation and Highest Quality - Made in Bavaria!

Features

  • Martin Seibold tone stabilizer for bass trombone with 2 rotary valves and tuba
  • Type: TSE 12
  • Valve spacing: approx. 12 mm
  • Effective connector between the 1st and 2nd valve
  • Stabilizes and centers the tone
  • More volume
  • Fuller sound
  • Higher tone quality
  • Easier and more secure tone response
  • Simple installation (no tools needed)
  • Made in Germany

Scope of delivery

  • 1 x Martin Seibold TSE 12 Tone Stability Enhancer for Bass Trombone and Tuba

Specification

  • Product number 00081328
  • Instrument Bassposaune, Tuba
  • Colour Silver

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