MRH159 Brown Sound Amplifier

📅 On the Marketplace since October 16, 2026 ⓘ

€39.99 Buy on Marketplace →

★★★★★ 5.0 out of 5 (1 review) Read reviews ↓

Based on: Marshall Super Lead 1959 100W ⓘ

For: Guitar

“Switch between the classic Super Lead character and the modified Brown Sound configuration for everything from vintage British crunch to explosive, harmonically rich rock lead tones.” from the Marketplace description

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About

🤖 AI summary This is an amp model of a vintage Marshall Super Lead 1959 100W, covering Plexi-style crunch through saturated lead tones. It has the original's two channels, High Treble (brighter, more aggressive) and Normal (fuller, more balanced), each with its own Loudness control. What stands out is a Brown Sound mode that recreates the amp's late-'70s hardware mods: mains voltage reduced to 90V, 6CA7 "Fat Bottle" power tubes, a 50kΩ Middle control, and a 25µF "fat cap" on the V2 preamp tube.

MRH159 is modeled after a vintage Marshall Super Lead 1959 100W, one of the most iconic British tube amplifiers ever made.

From open, dynamic Plexi-style crunch to powerful saturated lead tones, MRH159 captures the aggressive response, harmonic richness and unmistakable character of a cranked vintage Super Lead.

The defining feature of MRH159 is its dedicated BROWN SOUND modification. Instead of simply adding more gain, this mode recreates a series of hardware modifications made to the original amplifier to produce the legendary late-'70s Brown Sound.

The modified amplifier features:

Mains voltage reduced to 90V using a variable transformer, changing the response and feel of the entire amplifier
Original power tubes replaced with 6CA7 "Fat Bottle" tubes for a bigger, tighter and more aggressive power-stage character
Middle control changed to 50kΩ, altering the response of the tone stack
25µF cathode bypass capacitor added to the V2 preamp tube, the famous "fat cap" modification, increasing body and harmonic content

Together, these modifications transform the original Super Lead circuit into a thicker, more saturated and harmonically rich amplifier while retaining the dynamic response and articulation of the classic design.

MRH159 also features the two characteristic channels of the original amplifier: Channel 1 delivers the brighter and more aggressive High Treble response, while Channel 2 provides the fuller and more balanced Normal voicing.

Switch between the classic Super Lead character and the modified Brown Sound configuration for everything from vintage British crunch to explosive, harmonically rich rock lead tones.

FEATURES

Modeled after a vintage Marshall Super Lead 1959 100W
Classic High Treble and Normal channel voicings
Independent Loudness controls
Dedicated Brown Sound modified amplifier mode
90V reduced-mains-voltage behavior
6CA7 "Fat Bottle" power tube modeling
Modified 50kΩ Middle control
V2 25µF "fat cap" preamp modification
Dynamic vintage Plexi-style response
From classic crunch to saturated, harmonically rich lead tones

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hblu2026 ☕ Supporter Tone Expert ★ Founding Player ★★★★★ Oct 2026

Electric Guitar Rock Metal

So I am a huge nembrini fan and the latest addition to the marketplace is no different. Perfect classic rock tones as well as hard rock. Nails the brown sound with its built-in variac. Also unlike the first few nembrini amp sims this one includes dual cab mics just like the desktop version which makes it even easier to dial in tones. A+++! I hope the other ones get updated with the second mic option in th future.