Hermansson Amplification

30/12/2025

I would like to wish you all a happy new year and take the opportunity to thank you for believing in my work and for all the cheering during this year! 💫

Because of unforeseen circumstances I have an open slot for a 5 gain stages rebuild (already have a donor Marshall JMP in the workshop) so let me know if you are interested (send me a PM and let me know where you are located so I can get back with pricing in your currency).

I’m also working on a Marshall JTM45 reissue in which I’m trying out some new ideas for a gain control for my 3 gain stages circuit. It will be available for purchase as soon as the tests are done. So reach out if you are interested in that amp!

18/12/2025

Here’s a tight setting of this Hermansson rebuilt Mesa Dual Racktifier!

14/12/2025

A Marshall 2203 with Hermansson 5 gain stages circuit in the hands of its new owner! Have a listen!

Amp: Hermansson 5 Gain Stage Modded Marshall (1979 JMP 2203)Cab: Mesa OSGuitar: PRS Private Stock Standard 22 with BKP Polymaths

02/12/2025

A Marshall 2203 which is rebuilt with the Hermansson 5 gain stage circuit. It's an all-tube distortion circuit, with no clipping diodes or transistors.

Other features:
• Tightness control
• Punch control
• 3-way preshape switch
• 3-way punch range switch
• 3-way presence range switch
• 3-way bright switch
• 3-way mid boost switch
• 3-way more mids/dark switch
• New ground layout and preamp shields
• Effects loop

Guitars straight into the amp, TC D-two in the loop, Malmberg 4x12 cab with old 75Hz 25W Greenbacks.

07/11/2025

A Marshall 1959 SLP which is rebuilt with the Hermansson 5 gain stage circuit. It's an all-tube distortion circuit, with no clipping diodes or transistors.

Other features:
• Tightness control
• Punch control
• 3-way preshape switch
• 3-way bright switch
• 3-way mid boost switch
• 3-way more mids/dark switch
• New ground layout and preamp shields

Guitars straight into the amp, TC D-two in the loop, Malmberg 4x12 cab with old 75Hz 25W Greenbacks.

17/10/2025

Battle Beast are releasing a new album today!
Joona Björkroth is using a Hermansson rebuilt Mesa Dual Rectifier for both rhythm and solo parts on this album! Some excellent guitar playing on this album! 👌🏻

Battle Beast · album · 2025 · 10 songs

29/08/2025

IN MOURNING are releasing a new album today! A total of three Hermansson amps are involved! So have a listen to this awesome band and check out what the Hermansson amps sound like in a mix!

https://open.spotify.com/album/5b33s7hfvIGobl5DdFXR1x?si=8M8o5GlNSnmxq6yvg_78uQ

26/08/2025

Mesa Dual Rectifier Rev F (Serial number pre 800) rebuilt with Hermansson 4 gain stages circuit for both channels. Both channels have a lot more distortion available, increased attack, lower noise floor, better dynamic response, and a more musical EQ. I've installed my tightness control for both channels.

Only flipping the voicing switches in this clip (not turning any k***s) so you get an idea of how the switches can transform the distortion.

Extra features for this amp are:
• 3-way bright switch (both channels)
• 3 way preshape switch (both channels)
• 3-way mid boost/gain boost switch (global)
• 3-way more mids/dynamic switch (global)

Guitars straight into the amp, TC D-two in the loop, running through a Malmberg 4x12 with old greenbacks.

Please contact me if you want your Mesa Rectifier to sound like this one!