Audiority NeonVerb MV2 [WiN]

• Product: NeonVerb MV2
• Developer: Audiority
• Version: 1.0.1
• Format: VST3, AAX, CLAP
• Requirements: Windows 7 or later
• Source: audiority.com/shop/neonverb-mv2

NeonVerb MV2 is a hybrid convolution reverb plugin built from captured impulse responses of the Alesis MidiVerb II — an 8-bit-era budget rack unit that developed a cult following for its dense, greasy decay character and aliasing artifacts that read as texture rather than error. The plugin runs those 100 original IRs through a modern signal chain: IR TimeStretch for decay adjustment without timbre shift, an allpass diffusion network modeled on the original Alesis architecture, dual modulation paths (tape-style input wobble via MOD, shimmer-tail via SPIN), LF/HF IR damping, and an output transformer saturation stage. It occupies the aux send or insert position where a producer specifically needs that compressed, slightly crunchy 80s digital reverb — not a neutral acoustic simulation. The differentiator is the combination of authentic IR capture with post-processing controls that the original hardware never had, making decay and density adjustable without losing the source character.

Key Takeaway

Sessions running synths, drum machines, lo-fi sources, or ambient beds where a clean, transparent reverb tail would read as anachronistic are where this plugin activates. It displaces both generic algorithmic room plugins and the more clinical convolution alternatives when the production goal is spatial glue with period-specific coloration. The DECAY control is not real-time — TimeStretch runs offline — which removes it from automated rides and live performance contexts. Engineers working exclusively in modern clinical acoustic environments have no use case here.

The MidiVerb II IRs: Character Preserved Under Capture

The original Alesis MidiVerb II operated at 16 kHz bandwidth with a 16-bit processor, producing a reverb tail defined by a particular kind of early digital compression: dense buildup through the early reflections, a slightly smeared mid-tail, and high-frequency rolloff that reads as warmth when played through a full mix rather than on bypass. Audiority captured 100 of the original hardware programs as IRs, preserving the aliasing texture, the diffusion density pattern, and the way different programs handled frequency-dependent decay.

Standard convolution would lock those IRs to a fixed length. NeonVerb MV2 adds IR TimeStretch to the DECAY control — the algorithm extends or compresses the impulse response duration while preserving spectral shape. A room preset doesn’t become a hall with smeared timbre; it stays recognizably the same program at a longer or shorter duration. The tradeoff is processing: DECAY changes are not real-time, so they render offline and require a buffer update between adjustments. This is not a control to automate during playback.

The LF and HF damping filters operate on the IR directly rather than on the wet output. Cutting high frequencies in the IR progressively removes the aliasing texture along with the brightness — at extreme HF damping the result gets denser and more mid-forward, closer to the sound of the original hardware in a dark room than a filtered plugin output. LF damping thins the low-end buildup in programs where bass frequencies accumulate in the tail, useful on pitched material where the decay builds up harmonic mud.

MOD and SPIN: Two Modulation Circuits, Different Insertion Points

MOD applies random vibrato modulation to the input signal before convolution. The character Audiority documents as “tape-style wobble” is a pitch modulation at relatively low depth that affects the dry signal going into the reverb engine — the source pitch fluctuates before the IR processes it, which means the reverb tail carries that pitch movement inside its decay. On sustained pads or long chords this produces a seasick, slightly detuned spatial quality that reads as vintage tape transport instability. On transient-heavy material the modulation is largely inaudible on the tail since the attack clears before the wobble accumulates.

SPIN is a modulation stage applied after convolution, to the reverb tail itself. Audiority describes the character as Lexicon-inspired — a slow stereo sweep through the decay that widens the image and adds shimmer to the upper-frequency tail. The two circuits interact: MOD with SPIN engaged produces a tail that wobbles on entry and then shimmers on decay, which on pads or sustained chords builds a kind of unstable spatial envelope that works either as an effect in itself or as glue in a dense mix where a static tail would stick out.

Using both simultaneously at high depth settings on percussive or transient-rich material produces audible pitch artifacts in the decay. At moderate settings on sustained sources, the combination reads as organic movement rather than effect. Producers working in lo-fi, ambient, and shoegaze-adjacent contexts will get the most use from both controls engaged; engineers running the plugin as a transparent room or plate replacement should leave MOD at zero.

The Diffusion Network’s Density Control

The DIFFUSION parameter adds an allpass network modeled on Alesis’ original diffusion topology — not the same as algorithmic reverb diffusion parameters that control early reflection density. Here it extends the pre-reverb scattering of the input signal before it enters the convolution engine. At low settings the convolved IR retains the direct attack of the dry signal transitioning into the IR’s character. At higher settings the signal blurs before convolution — transient information softens, the onset of the reverb tail loses its sharp edge, and the spatial image thickens.

The interaction with the MOD control is worth mapping in context: high DIFFUSION plus MOD at moderate depth produces a smeared, dense onset that enters the reverb tail already moving. On drum room sends this can create an unwanted pudding effect on the transient. On pads, strings, or atmospheric synth layers it produces a buildup that reads as depth rather than smear.

DIFFUSION at zero is not neutral — the convolution still runs through the allpass structure, so there’s always some early diffusion from the captured IR itself. The parameter adds to that native behavior rather than removing it. Engineers expecting to use low settings as a dry/wet-style partial bypass should set expectations accordingly.

Transformer Saturation and the Output Stage

The output transformer saturation stage adds harmonic distortion after the wet signal, specifically targeting the coloration associated with transformers in outboard hardware — second and third harmonic content, subtle compression at the top of the dynamic range, and a low-end weight that doesn’t require EQ to produce. At light drive settings the saturation reads as thickness rather than distortion: the reverb tail sits in the mix more firmly without needing additional low-mid EQ boosting.

At higher saturation settings the harmonic content becomes audible as grit on the upper frequencies of longer tails. This is period-appropriate on MidiVerb II programs that already carry high-frequency aliasing texture — the saturation adds harmonic density rather than fighting the existing character. On naturally bright or clinical IRs, high saturation pushes them toward a darker, more aggressive coloration that can read as a different program than what the IR originally captured.

The transformer stage is not a clipper and doesn’t hard limit. The compression behavior is gentle and frequency-dependent in the way transformer saturation behaves in hardware — the low end tightens slightly before the high end begins to distort. For producers using NeonVerb MV2 as an ambient send where the tail needs to hold position in a busy mix, light saturation is faster to dial than low-mid EQ plus parallel compression.

Pre-Delay, Tempo Sync, and Session Integration

Pre-delay with tempo sync addresses the practical limitation of convolution reverbs in modern DAW sessions — without it, a captured IR from a fixed hardware environment doesn’t adapt to the rhythmic context of the project. Sync mode locks pre-delay to the host tempo, so the attack of the reverb onset falls predictably in relation to the grid rather than in absolute milliseconds. For rhythmic material this keeps the reverb tail from smearing the attack timing of the source without shortening the decay.

The KILL SWITCH in the toolbar cuts reverb output immediately, useful during mix passes when a long tail needs to be bypassed for a comparison without waiting for the decay to clear. The MIDI mapping system persists between sessions as of v1.0.1, which matters for producers who’ve mapped expression pedals or hardware controllers to MOD, SPIN, or DECAY for performance automation. Earlier builds reset mappings on close; that issue was patched in the February 2026 update.

HQ oversampling mode is available via the toolbar to reduce aliasing when the saturation stage is driven hard. CPU cost increases noticeably at higher sample rates — 96kHz sessions with HQ enabled on multiple instances will reach processor limits faster than a standard algorithmic reverb would. Producers running large template sessions should test instance count before committing to multiple NeonVerb MV2 sends.

Where the MidiVerb II Character Doesn’t Translate

NeonVerb MV2 reproduces programs from a hardware unit that had no parameter editing — 100 fixed programs at fixed decay times, with no adjustable pre-delay, no modulation, no saturation. The plugin adds everything the original hardware lacked. The 100 captured programs are fixed in character, though — DECAY TimeStretch adjusts duration, and damping shapes frequency content, but the fundamental room shape, early reflection pattern, and diffusion character of each IR cannot be reshaped. A small ambience program cannot be restructured into a long hall; it can only be stretched within the limits of the TimeStretch algorithm.

The DECAY control’s offline processing is the most significant operational constraint. Mix engineers working with automated reverb returns — where decay time changes during a song — will need to render those changes rather than ride them in real time. The plugin is not structured for automation in that sense; it’s structured for static or slowly-changing spatial decisions. Producers whose reverb workflow depends on real-time decay automation should confirm that limitation before purchasing.

The aliasing texture of the original hardware reads differently at different frequency ranges and program types. On clean acoustic material — acoustic guitar, clean piano, orchestral sources — the 16 kHz bandwidth ceiling and the aliasing character of the IRs may conflict with the source material rather than complement it. The plugin performs in sessions that want that era’s digital coloration, not sessions that want a neutral acoustic simulation with vintage-inspired controls.

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