Since the early 2000s, amp and cabinet simulator pedals have undergone remarkable advancements, transforming from basic emulations into sophisticated studio-grade tools.
Among the key innovators in this space, Chinese brand NUX has consistently pushed boundaries with its forward-thinking designs. The NUX Solid Studio MKII represents their latest breakthrough—a powerful, feature-packed, stereo unit that outperforms its MkI predecessor and rivals with next-gen processing, ultra-responsive amp modeling, and near-zero latency.
These are some of the pedal’s main features:
- TSAC-4K Physical Amp Modeling – Unlike standard digital amp sims, its White-box algorithm independently models preamp and power amp interactions, delivering realistic tube response and playability, including negative feedback behavior for an authentic analog feel.
- Cyber IR™ Stereo Impulse Response – Developed with Choptones IRs, it offers true stereo IR loading (60 L + 60 R slots) with microphone positioning, distance control, and ultra-low latency (0.85ms bypass, 1.9ms engaged).
- Flexible Stereo Routing – Unique block-based signal routing allows users to customize processing chains, including 8 ambient effects (reverbs, delays) in stereo for spatial depth.
- High-Fidelity Stereo I/O – Features balanced 1/4″ outputs for direct PA/interface connection, USB audio streaming (24-bit/48kHz), and simultaneous dry/wet recording—ideal for re-amping and studio work.
- Pedal-Friendly Stereo Processing – A 110dB dynamic range ensures compatibility with overdrives and compressors without unnatural compression, unlike many amp sims.
Differences between MkI and MkII
Besides the gorgeous color LED screen, crucial in navigating the pedal’s many features, these are the MkII’s improvement over the first version:
1. Advanced Amp Modeling (TSAC-4K White-Box Algorithm)
- MKI: Used an earlier version of TSAC modeling, focusing on preamp emulation.
- MKII: Introduces independent preamp + power amp modeling with negative feedback simulation, delivering more dynamic response and tube-like feel.
2. Cyber IR™ Technology (Stereo IR Loading & Mic Positioning)
- MKI: Limited to mono IR loading with basic mic simulation.
- MKII: Adds true stereo IR support (60 L + 60 R slots), mic position/distance control, and collaboration with Choptones IRs for higher realism.
3. Ultra-Low Latency (Faster Processing)
- MKI: ~2.5ms latency (bypass), ~3.5ms (engaged).
- MKII: 0.85ms (bypass), 1.9ms (engaged)—one of the fastest in its class.
4. Enhanced Stereo I/O & Routing Flexibility
- MKI: Basic mono/stereo output options.
- MKII:
– Balanced 1/4″ outputs for noise-free connection to PAs/interfaces.
– Customizable signal block routing (reorder effects/IR placement).
– 8 ambient effects (vs. MKI’s limited selection), including tape echo, pan delay, and hall reverb.
5. Improved Recording & USB Features
- MKI: Basic USB audio (16-bit/44.1kHz).
- MKII:
- 24-bit/48kHz USB audio (TI PCM1840 ADC / AKM AK4454VN DAC).
- Simultaneous dry/wet recording (re-amping capability).
- On-The-Go (OTG) compatibility for mobile recording.
6. Pedal Platform & Dynamic Range
- MKI: Good headroom but limited dynamic range.
- MKII: 110dB dynamic range (better handling of drive pedals without compression artifacts).
Here’s the launch video of it:
