Koch

The Treble Side

The Treble Side

The Treble Side

5 rows
106 buttons
4 sets of LMMH reeds (16+8+8+4)
Range of notes E2 through G7
Original Genuine Mother buttons
Marked C and G# buttons
64 notes
7 chin switches
15 treble registers
Light weigth valve pallets
Double Cassotto
Tone Chamber with rose gold accent

The Bass Side

The Treble Side

The Treble Side

6 rows
6 sets of bass reeds
4 switches (2-4-4-6)
58 free-bass notes
Free-bass convertor
Double bassoon (16+16)
Range of notes E2 through C#6
Bass mute switch
Air release button
Bass strap adjustment wheel
Marked G#, C, and E buttons
120 Buttons

The Reeds

The Treble Side

The Reeds

Upgraded quality reeds
All single solid plates
Selective aged spruce reed blocks
Lambskin valves
The reeds are tuned dry ("A=440Hz")
Colorful tone and attractive sound
Every reed has a great response

Features

Conditions

The Reeds

Original body
Redwood veneer inlay
Overhauled mechanics professionally done in 2025
Complete tuning in 2020
Dimensions: 18 1/4 X 18 1/4 X 8 3/4
Weight: 35 Ibs

Conditions

Conditions

Conditions

Mechanically and acoustically great
Every note, reed, key, and button works
Flat and soft leather strips for reeds
Superfast and extremely quiet keyboard
Tight bellows and no air leaks
No tobacco smells
Professionally checked and tuned
All acoustic, no wires, no batteries, no sensors, and no electrical plugs
Physical condition is very very good
Played and exercised regularly

Included

Conditions

Conditions

New wide genuine leather straps with velour padding (not made in China)
High premium quality padded case for extra protection (Not made in China)
Chin registers protector
Chest support (installed)