Koch Amps

EL34 Based Kits
EH Valve Kit (3x 12AX7 4x EL34EH)
£289.00 Add to basket

This fully tested kit contains three EH 12AX7 and four EL34EH valves, perfect for 100 watt rock amps. Step up your amps tone with top-shelf Russian-made valves! These valves are hand-tested and matched on our AVO testers to ensure maximum quality. We supply a test certificate showing the results.

Made in Russia. Tested in-house.

180 day warranty.
5U4GB, 5Y3, EZ81, 5AR4, and GZ34 Rectifier Tubes and Valves
Electro Harmonix 5U4GB Rectifier
£39.24 Add to basket

The 5U4GB by Electro Harmonix appears in many American amps, including Mesa Boogie and Fender. Tested in-house.

Includes a 180 day warranty.
EL84 Amp Valve kits
JJ 2x ECC83S 2x EL84 Lunchbox Valve Kit
£69.00 Add to basket

A fully tested revalve kit containing 2x ECC83S and 2x EL84 valves. Perfect for a vast range of 15 watt lunchbox amps from Hughes & Kettner, Engl, Vox, Orange, and more. Examples include the Vox Night Train, Vox AC10, Orange Tiny Terror, and many others amps..

Output valves and phase splitter matched by hand in-house.

Valves by JJ Electronic in Slovakia. Tested in-house.

180 day warranty.
EL34 Based Kits
JJ 3x ECC83S 4x EL34 II Valve kit
£139.00 Add to basket

This fully tested kit contains three JJ ECC83 (12AX7) and four JJ EL34 II valves. The JJ EL34 II has richer mid tones than the original JJ EL34. Output valves and phase splitter hand-matched in-house.

Made in Slovakia. Tested in-house.

180 day warranty.
EL34 Based Kits
JJ 4x ECC83S 4x EL34 II Valve kit
£139.00 Add to basket

This fully tested kit contains four JJ ECC83S (12AX7) and four JJ EL34 valves. All four EL34s matched to each other. One ECC83S balanced for the phase splitter position.

Valves made by JJ Electronic in Slovakia. Tested in-house.

180 day warranty.
EL34 Based Kits
Tung Sol Valve Kit (3x 12AX7 4x EL34B)
£279.00 Add to basket

The Tung Sol Valve Kit 3x 12AX7 4x EL34B is our best sounding valve kit for your 100 watt amp. These top-shelf valves offer a rich tone perfect for all styles of rock. Preferred by professional musicians who value durability, reliability, and superb tone.

Made in Russia. Tested in-house.

180 day warranty.