About This Item
Description
The Hotone Ampero II MP-350 combines the full second-generation effects engine with a built-in expression pedal and standard 5-pin MIDI, and firmware V1.4.0 now loads NAM A2 files natively on the unit.
Which Ampero II processor should you choose?
| Model | Screen | Built-in EXP pedal | Mic input | Balanced outs | MIDI | Weight | NAM A2 (device) |
|---|---|---|---|---|---|---|---|
| Ampero II Stage (MP-380) | 5" 800x480 touch | No | XLR/TS combo, 52dB, 48V phantom | 2 x XLR | 3.5mm TRS in/out + Bluetooth MIDI | 1895 g | Yes, firmware V1.7.0 (2026-07-22) |
| Ampero II Stomp (MP-300) | 4" 800x480 touch | No | No XLR – 2x TS inputs | 2 x TRS balanced | 5-pin MIDI in/out | 1050 g | Yes, firmware V2.5.0 (2026-07-30) |
| Ampero II (MP-350) | 5" 800x480 touch | Yes, two-status switching | XLR/TS combo, 52dB, 48V phantom | 2 x XLR | 5-pin MIDI in/out | 1695 g | Yes, firmware V1.4.0 (2026-07-30) |
All three run the same 460+ effect library, 12 simultaneous effect slots, and 300 patches, and as of their current firmware, all three natively load NAM A2 files in Lite format via an onboard NAM module – Hotone's own release notes require Ampero II software V1.4.0 or later for the update. Pick Ampero II Stomp for the smallest, lightest, lowest-power board-mount unit with 5-pin MIDI and TRS balanced outs. Pick Ampero II Stage when you need XLR outs, a mic input with phantom power, two EXP/CTRL jacks, and Bluetooth, and can accommodate 1895 g and 3.5 mm TRS MIDI jacks. Pick Ampero II when you want the same XLR I/O and mic input plus an onboard expression pedal and standard 5-pin MIDI, at 1695 g.
Why guitarists choose the Ampero II
- Native NAM A2 support on the device itself: firmware V1.4.0 (released 2026-07-30) added the NAM effect module, natively loading NAM A2 files in Lite format, requiring Ampero II software V1.4.0 or later.
- 460+ effects (incl. global EQ) across 18 effect modules per the current manual (17 per the product page spec table – Hotone's own documents disagree, so both figures are cited), 12 simultaneous slots, and 300 patches.
- Built-in expression pedal with two-status volume/expression switching, so you get onboard expression control without adding an external pedal.
- Same XLR I/O as Ampero II Stage: XLR/TS combo mic input with 52 dB preamp and 48V phantom power, plus 2 x XLR balanced outputs with ground lift.
- EXP/CTRL jacks are officially documented as "Perfect for Ampero Press or Ampero Switch+", and 5-pin MIDI I/O allows direct use with Ampero Control.
- USB-C interface described by Hotone as an 8-in/8-out USB Audio 2.0 connection with reamp support, for deep DAW integration.
Controls and switches
- 5" 800x480 touchscreen – full patch/effect editing.
- 4 assignable footswitches with multicolour halo LEDs – two working modes (PATCH / STOMP).
- Built-in expression pedal – two-status volume/expression switching.
- Quick-access knobs and 4 scenes per patch.
- Ground-lift switch on the XLR outputs.
- Input mode selectors – 3 modes on Input L, 5 modes on Input R.
Power and pedalboard compatibility
Runs on 9-18V DC centre negative; current consumption is 1.4A max (9V) per the current V1.4.0 manual, while the product page spec table states 1.2A max (9V) – both are official Hotone figures, and the manual reflects the newer document. Input impedance: 1/4" TS E.GT 1 MΩ / A.GT 4.7 MΩ / LINE 10 kΩ; XLR input 5 kΩ; FX loop return 100 kΩ; Aux In 10 kΩ. Output impedance: unbalanced/balanced/FX send 1 kΩ, headphones 47 Ω.
Technical specifications
| Model | Ampero II (MP-350) |
| Product class | CDCM HD Gen 2 Amp Modeler / Effects Processor |
| Screen | 5" 800x480 touchscreen |
| Built-in expression pedal | Yes, two-status switching |
| Effects / modules / slots / patches | 460+ / 18 (manual) or 17 (product page) / 12 / 300 |
| Mic input | XLR/TS combo, 52 dB preamp, 48V phantom power |
| Balanced outputs | 2 x XLR with ground lift |
| MIDI | 5-pin MIDI in + out |
| USB | USB-C, 8-in/8-out per product page, 44.1-192 kHz |
| Power | 9-18V DC centre negative, 1.4A max at 9V (manual) / 1.2A (product page) |
| Dimensions | 33.0 x 15.7 x 6.1 cm |
| Weight | 1695 g |
| NAM A2 (device) | Supported from firmware V1.4.0 (2026-07-30); requires Ampero II software V1.4.0+ |
FAQ
Does Ampero II load NAM A2 files on the device itself? Yes. Firmware V1.4.0, released 2026-07-30, added a NAM effect module that natively loads NAM A2 files in Lite format directly on the unit, requiring Ampero II software V1.4.0 or later.
How is Ampero II different from Ampero II Stage? Ampero II adds a built-in expression pedal and standard 5-pin MIDI I/O, while Ampero II Stage has no onboard expression pedal but adds Bluetooth and 3.5mm TRS MIDI. Both share the same XLR I/O, mic preamp, and phantom power.
Why do the effect-module counts differ between sources? Hotone's own V1.4.0 manual lists 18 effect modules, while the product page spec table lists 17 – this is a known inconsistency in Hotone's official documentation, and we cite both rather than picking one.
Does it have a Sound Clone feature separate from NAM? Yes, Ampero II also has Sound Clone / Tone Catch (CDCM HD + F.I.R.E. capture of amps, cabs, dirt pedals, and boosters), which Hotone states cannot clone modulations, delays, or reverbs. This is a separate feature from the device NAM A2 module.
What expression pedals or footswitches are officially compatible? The EXP/CTRL jacks are documented as "Perfect for Ampero Press or Ampero Switch+".
What power supply does it need? 9-18V DC centre negative. The manual states 1.4A max at 9V; the product page states 1.2A – use a supply rated for at least 1.4A to be safe.
Works well with
Ampero Press (SP-30), Ampero Switch+ (FS-2), Karat Cap