Description
TONE MATCH PRESETS, CAPTURES, CLONES, AND PROFILES
The 76 Mars JMP 50w presets and captures are based on a vintage 1976 Marshall 50w JMP Plexi. Over the years the 50 and 100w Plexi’s changed quite a bit. By the mid-70’s, these amps became more aggressive, but still retained the warm rich tones of the amps of the late 60’s. Our ’76 Plexi offers a wonderful mix of clean and crunch tones that are unmistakably ‘vintage Marshall’.
We have captured and tone matched the amp through two different cabs as well as direct. For capture units, we’ve included 36 captures, and for preset units we’ve included two sets of presets and two tone-matched IR’s.
CAPTURES & PROFILES
(Applies to Line 6 Stadium, TONEX, Quad/Nano Cortex, Kemper)
The captures increase through the entire gain range of the amp. We’ve delivered 36 total captures, including four speaker options as well as direct captures.
The captures are numbered, and the number corresponds to the level of gain in the tone model. Lower numbers equal lower gain, and higher numbers equal higher gain. Typically a ‘2’ or ‘3’ is the ‘edge of breakup’, and is the perfect option to use with pedals.
TONEX, Quad Cortex, and Kemper are all using the ‘V2’ capture process/technology
NAM (A2) Captures
Includes 36 captures with the same cab and direct options
Capture Labels:
- M76 = 1976 Marshall 1960A 4×12 (Celestion Blackbacks)
- HM = Matchless Chief 100 2×12 (Scumback H76 + M75)
- Dir = Direct (no cab)
PRESETS INFO
(Applies to Line 6 HX, Fractal, Quad Cortex units)
The pack includes 2 sets of presets (each with SC and HB options). The presets are labeled ‘A’ and ‘B’, and feature different approaches to signal chain and amp channels.
‘A PRESETS: The ‘A’’ presets feature two amp blocks set up in a stereo pair with all the wet effects feeding into the amps. Think of it like running a large stereo pedalboard into two amplifiers set on the ‘edge of breakup’.
‘B’ PRESETS: In the ‘B’ presets, the modulation, delay, and reverb effects are placed after the single (mono) amplifier block. This replicates a studio setting where all the modulation, delay, and reverb effects are applied after the amplifier.
SNAPSHOTS/SCENES
Our presets include Snapshots for instant access to a wide variety of tones, including clean sounds, ambient tones, driven, lead, and high gain sounds, and modulated tones.
NOTES:
- The HX Stomp, POD Go, and FM3 folders include ‘FX” presets. These presets include the additional effects blocks from the full Helix/Axe-FX versions. Because these units have signal flow and DSP limitations, they are not as fully featured as the flagship units.
- Fractal AM4 presets include a block library download that gives you access to many of our favorite effects already dialed in.
- POD GO & AM4 Users: Because POD Go cannot utilize two amp blocks in a single preset, we’ve delivered one set of presets.
- The HX Stomp presets do not include Snapshots/Scenes.
IR Cab Labels:
- M76 = 1976 Marshall 1960A 4×12 (Celestion Blackbacks)
- HM = Matchless Chief 100 2×12 (Scumback H76 + M75)
TONE MATCH PATCHES (Applies to Line 6 HX and Fractal presets)
These are part of our ‘Tone Match’ line of patches. To create these patches, we make custom IR’s that ‘match’ the HX and Fractal amp models to our real-world amp. The result is the Line 6 and Fractal units sound almost exactly like our actual amplifiers.
The ‘Gen2’ indicates a new process we’ve used when Tone Matching our amplifiers that takes more of the amplifier’s cab and speaker into account, resulting in a more accurate tone match impulse response.
QUAD/NANO CORTEX V2 Captures & Presets – HOW DO YOU GET THE CAPTURES?
When you place your order, we will need to manually send you the captures through the ‘Cortex Cloud’ app by Neural DSP, available for both iOS and Android devices. First, you need to have the app installed and you must have an account through the app (go here to create an account and access the app).
This is how we will send you the captures:
- Please include your Cortex Cloud app username in the ‘Notes’ field when checking out. If you do not include this, we cannot send you the captures. After we receive your order, we (SignalTheory) will follow you on the app.
- Follow ‘SignalTheory’ on the Cortex Cloud app. This will make us ‘friends’ through the app :). If you are not following us, we cannot send you the captures.
- After we receive your order, and we ‘Friends’ on the app, we will send you the captures through the app. We bundle the captures into presets, so you will receive one (or more) presets that include all the captures. You will find the captures in the ‘Shared with me’ section on your Quad Cortex.
- Please allow up to 5 business days for us to send you the captures. Most orders will be fulfilled within two business days or less. This fulfillment process must happen manually – we will do our best to get you the files quickly. Once the NDSP marketplace opens, this process may change.
CAB DETAILS
- For capture units (Stadium/Proxy, TONEX, Quad Cortex, and Kemper), you’ll get separate captures through each cab, as well as direct captures.
- For modeling units (Line 6 and Fractal), you’ll get separate Tone-Matched IR files which you can swap into the cab block(s) to switch cabs. There are no ‘right’ or ‘wrong’ cab options – simply audition each cab and pick your favorite (or mix/match them). You do not necessarily need to make any adjustments to the amp block(s) when switching IR cabs.














Evan Boles (verified owner) –
Excellent patch. Running through Helix Stadium. Hard to choose which I like more, A or B. Very happy with the clean tones all the way to the ambient lead. It captures that signature Marshall tone played through my passive HB’s that are on half my guitars. I don’t have any true SC guitars but coil split gets pretty close, however I have not tried the SC patches yet, too happy with the tone from the HB pup patch. First review but 20+ patches from Signal Theory and Worship Tutorials (OG Helix) and they have always delivered.
Taylor Clayton (verified owner) –
Best Marshall captures I have ever tried!! With all the different cab options you will definitely find something that suits you!
Tim Hicks (verified owner) –
The 76 MARS JMP 50W – TONE MATCH PRESETS are excellent! I always like the variation between the A & B presets. And having both HB and SC versions is very helpful. One of my favorite things about your presets is the “SWELLS” Snapshot. I play at my church and this comes in handy for “responsive readings”, intros, and bridges. Some may not consider this a big deal but when serving the song, it can be powerful! Thanks guys!
stephen.cga (verified owner) –
These Marshall captures bring back so many memories back in the day (the 1900’s) when music was raw, real, and not auto-tuned. I absolutely enjoy the presets, snapshots, and ease of use. Thank you!
Steven de Munnik (verified owner) –
These ’76 Marshall tones remind me of the ‘good old days’ when I played mostly tube-amps. But I am very happy to use them in my compact and light Fractal AM4. The sounds are very convincing and dynamic, from clean to lead. Thanks again to the people of Signal Theory, for helping me (all the way to churches in The Netherlands) with these great sounds, presets and effectblocks.