Beta. Tested on one MS-70CDR only. If you try it on another model, please file a NAM / Cab report, including when everything works.
A bad effect file can stop the pedal from finishing boot, or freeze it when a patch uses the effect. It is recoverable, and in testing it always was:
All INITIALIZE, press the footswitch.Things that are known to freeze it, so you can avoid them:
NAM4smok.ZDL, C01sm57.ZDL) are built to avoid
this; don’t rename them.NAMLite-<name>.ZDL from before 2026-09-29 (see below).Whenever you report a freeze, say which files were installed and which one you added last.
Filenames changed (2026-09-29): captures are now
NAM<slot><name>.ZDL, e.g.NAM2smok.ZDL. The oldNAMLite-<name>.ZDLfiles all cut down toNAMLite-on the pedal (it keeps 8 characters), and two installed files with the same cut-down name freeze it on boot. Remove anyNAMLite-…capture files from the pedal and install the renamed ones. The 0.23 engine was not at fault. Hardware-confirmed 2026-09-29:NAM1ampt+NAM2smokinstalled together boot fine (with CabIR also installed).Calibrated DSP estimates (2026-10-06). Current captures declare full-rate NAM 194, Eco 6/8 NAM 177, and CabIR 10. PE uses an approximate budget of 228; hardware accepted a declared total of 224.4 and refused 228.4. These costs help the pedal reject oversized chains with DSP Full, but are admission estimates, not measured CPU usage or a guarantee against crackling while turning controls. Re-export and reinstall captures to use the current costs.
16 capture slots (2026-10-06). Slots 1-8 keep FXIDs 900-907; slots 9-16 are 950-957 (908-913 were the retired CabIR bank and NAM test effects). Files
NAM<slot><name>(4 name characters for slots 1-9, 3 for 10-16, e.g.NAM12amp.ZDL); short names must start with a letter so slot 1 can never collide with slots 10-16 on the pedal’s 8-character names. Patch Editor lists only the captures and cabs you have made (named via this browser’s loader or files in dist/), not the empty reserved slots.Engine 0.25 (2026-10-02). 51-row Bass/Mid/Treb table (3 KB smaller; odd knob values play the next even one), flat-EQ skip, and an Eco checkbox: the model runs 6 of every 8 samples (~6% less DSP; within 0.7 dB of full rate through a cab) for amp-only captures going into a cab. Eco templates:
tools/nam_template_eco/.Engine 0.24 (2026-10-02, rebuilt). The first 0.24 froze the pedal on load: it was over the ZDL size cap (see SAFE-DSP-RULES.md). This one is smaller than 0.23. ~4% lighter than 0.23 (predicate-free input and output loops once warm), so NAM + CabIR has more room; sound within rounding (~90 dB) of 0.23. Re-export captures to get it.
Engine 0.23 (2026-09-28). Adds a Gate knob (page 3) that mutes the amp hiss between notes; Gate 0 is off and bit-identical to 0.22. Engine 0.22 was the same sound as 0.21, bit for bit, with about 21% less DSP work. Every capture the loader makes now plays at full rate with the full model (23 layers × 3 channels, all 1,871 weights, 32-bit float), and has Bass / Mid / Treb on the second knob page. Captures made with the old 0.14 engine crackle at full rate; 0.21/0.22 captures work but use more DSP or lack the gate — re-export to upgrade. No captures ship with the repo: bring your own
.nam(e.g. from TONE3000) and build it with the loader.
.nam file.smokey. Choose an unused capture slot.NAMLite-smokey;
the pedal uses the shorter NAM-smokey under Delay, version 0.25.The same page has a Cabinets section. Each cab IR WAV (44.1/48 kHz, up to
2 s) is fitted in the browser to a 32-tap FIR + 6 filters and becomes its own
CabIR effect, like a NAM capture: up to 16 slots (FXID 930-945), files
C<slot><name>.ZDL (e.g. C01sm57.ZDL), pedal name CAB-<name>, picked
from the slot’s effect list – no Cab knob. A cab keeps its slot; removing one
frees the slot for the next. Download one cab or all; install with Effect
Manager. Cost ~800 cycles (~5% of NAM). Details:
src/hardware_probes/cab_ir/README.md.
| page | knobs |
|---|---|
| 1 | Input, Output, Mix |
| 2 | Bass, Mid, Treb — 50 is exactly flat |
| 3 | Gate — 0 is off; 1–100 sets the threshold from −99 to −30 dB |
The tone stack is voiced like the NAM plugin’s: Bass a low shelf at 150 Hz (±20 dB), Mid a peak at 425 Hz (±15 dB), Treb a high shelf at 1.8 kHz (±10 dB), run in that order after the model. At 50/50/50 the output is bit-identical to the same capture without an EQ. It costs ~1.8% of the DSP whatever the settings.
At full rate one capture uses most of the pedal’s DSP: it declares 194 of the roughly 225 the pedal allows, Eco 177, a cab 10. On the owner’s MS-70CDR a full-rate capture plus one light effect (Great Muff, or a cab) plays clean. Patch Editor’s DSP meter adds the chain up before you write it. How the full rate was made to fit at all is in NAM-RUNTIME-INVESTIGATION.md.
Sixteen independent identities are reserved (FXIDs 900–907 and 950–957, Delay group). These were checked against the current stock, custom, legacy and probe database and source manifests. Original NAMLite (498) is unchanged. Merely renaming a file would not create another effect; each slot has its own ID and DLL identity.
Reusing a slot replaces that capture in every patch referencing it, even if you choose a new short name. The page identifies occupied slots and prevents duplicate short names across slots. Same-file reexports select their previous slot; new files select the first locally unused slot. When all slots are occupied, choose which one to replace. Creating a download does not install or replace anything on the pedal.
Names and occupancy are stored in this browser at this address. Keep the same browser and URL (localhost and 127.0.0.1 are different origins). Browser storage is not a pedal inventory. Another browser/computer or cleared storage cannot know your occupied slots: use saved capture notes before choosing a slot. PE recognizes all sixteen IDs even without these names, as generic numbered captures. It updates names when returning from the loader or receiving a storage update.
This enables keeping several captures installed, not a guarantee that multiple neural effects can process simultaneously within the pedal’s DSP budget.
Conversion stays in the browser, without a compiler or upload. Open via localhost
or HTTPS rather than file://. Install through Effect Manager on a computer;
PE cannot install .nam files directly.
Only the supported 3-channel A2 Lite WaveNet layout is accepted, either directly or as a matching SlimmableContainer submodel. The page checks shape, activations, coefficient count and finite values. Bigger networks, LSTMs and other shapes are rejected. File limit is 20 MB.
44.1 and 48 kHz captures are accepted. Playback remains native 44.1 kHz without resampling, so 48 kHz captures can differ from their original tone and timing. Wet is mono. Hardware fidelity remains experimental.
Engine 0.23 (0.22 + gate; 0.22 = 0.21 + register-accumulated tap loops). Templates are packaged by tools/nam_prototype/package_eq_templates.py
(the old package_multi_templates.py refuses to run: it would restore the
crackling 0.12 engine). Checks: the audio code is byte-identical in all eight
slots; the seed capture’s weights occur exactly once and are zeroed; slot 1
filled by the loader’s own convertNamed is byte-identical to a direct
build of the same capture; that file runs clean in the emulator (no resets,
mirror invariants hold) and, with the EQ flat, its output is bit-identical to
the NAMFull2 engine and to the 0.21 capture 1 (also at EQ 90/20/70 and
0/100/0). Emulated callback: 15,763 cycles median vs 20,011 for 0.21; the gate adds
~170 (15,933 with Gate 0, 15,950 with it on). Gate 0 is bit-identical to 0.22
(EQ flat and 90/20/70); with the gate on the TI build matches the host build
to 1e-10. validate_tone_stack.py step 4 covers the gate. validate_exact_rings.py and validate_tone_stack.py
cover the kernel and EQ on the host. The 0.14 templates are archived in
build/nam-archive/2026-09-28/nam_template-0.14/; the 0.21 and 0.22
templates and capture 1 in nam_template-0.2x/ and capture1-0.2x/.
Engine 0.14 (historical):
Eight templates are linked from the tested Smokey 0.12 object, with distinct IDs and DLL/SONAME identities. Their DSP instructions are byte-identical to the working block build. Capture coefficients are zeroed before packaging; no capture is bundled. Browser conversion changes only weights, version and the 12-byte display-name field. All other code, relocations and tables stay intact.
Automated tests verify unique IDs, restricted writes, names, registry replacement, unsupported models and damaged templates. Multi-capture installation was confirmed on hardware 2026-09-29 once filenames were kept to 8 characters. Original single-identity conversion remains covered by byte comparisons with previously tested Smokey and Megaphone binaries.
tools/nam_prototype/package_multi_templates.py creates the reserved templates
and PE entries. build/extract_effect_db.py preserves their metadata during
normal DB rebuilds. The capture-free engine binaries are not installable effects
until the browser fills their model data.
Tests: node --test tools/tests/nam_loader.test.cjs tools/tests/patch_editor.test.cjs.
Every new export embeds the native 128×64 NAM cover. The result also offers a
same-name PNG for Effect Manager; save it beside the ZDL. Existing installed
captures need to be exported and installed again to receive the cover.
The artwork source is build/capture_art.py; both template packaging scripts
include it and verify that DSP instructions remain unchanged apart from relocated
constant addresses.