The MOOER Micro PreAMP 010 Two Stones is a compact preamp pedal that puts two channels of a tube amplifier's preamp section on your pedalboard. RockBoard's PedalPedia describes the Micro PreAMP line as "sonically accurate digital recreations of the preamp sections of popular tube amplifiers," captured by directly analyzing real amps1. The Two Stones is specifically sampled from a dual channel American amplifier, which MOOER characterizes as having "a cascading gain structure, rich harmonic tones and full base response"1.
Like the rest of the series, it carries two channels with independent gain, volume and EQ, plus integrated speaker cabinet simulation and dual operating modes1. That means you can set a clean sound on one channel and a lead sound on the other, and go straight to a mixer or interface with cab simulation already in the signal.
Two channels sampled from an American tube amp
The Two Stones recreates both channels of its source amp. MOOER's description of the two channels1:
- Blue channel: "delivers pristine clean tones that have rich bass and lush highs"1
- Red channel: "provides searing, superb leads"1
Because each channel has its own gain, volume and EQ, the pedal works like a two-channel amp head in mini form: set the blue channel for rhythm work and the red channel for solos, then footswitch between them. The dual operating modes give you further flexibility in how the pedal is configured and used1.
MOOER's product page for the Two Stones lists the circuit type as analog1, while the same maker describes the Micro PreAMP series as digital recreations of tube preamp sections1. The series description is the more specific claim about how the sound is captured, so treat the "analog" listing with that in mind.
Speaker cabinet simulation and how to use it
Every pedal in the Micro PreAMP range, the Two Stones included, comes with integrated speaker cabinet simulation1. For a player, that is the difference between a preamp pedal that needs a real guitar cabinet to sound right and one that can plug directly into:
- a mixing console, for silent stage or recording setups
- an audio interface, for home recording
- a power amp and cab, with the simulation handling the speaker filtering
- headphones via a suitable monitoring chain
The dual operating modes round out the feature set, giving two ways to configure and use the pedal depending on your rig1.
Power: 9V DC, 300mA
The Two Stones runs on 9V DC, center negative, and draws 300mA1. That current draw matches the rest of the series, including the 001 Gas Station and 008 Cali-MK 334.
At 300mA, this is not a low-current mini pedal. A single isolated 9V output rated for the draw, or a supply with enough headroom, is the practical choice; a small daisy chain shared with other digital pedals may come up short.
One of ten Micro PreAMP models
The Two Stones is number 010 in a set of ten Micro PreAMP models MOOER released initially, each based on a different popular tube amplifier from a range of manufacturers1. Other models in the range include the 007 Regal Tone, the 013 Match Box and the 014 Taxidea Taxus, each with the same dual channel, cab sim and dual mode format567.
Demo video
MOOER's product page for the Two Stones carries a demo video by Brett Kingman, in English, covering the pedal's sounds and features1.
Videos
MOOER Audio
Brett Kingman
뮤즈텍 Muztek Music Supply
Questions
What is the difference between the blue and red channels?
The blue channel delivers pristine clean tones with rich bass and lush highs, while the red channel provides searing lead tones. Each channel has its own gain, volume and EQ controls, so you can set up a clean sound and a lead sound and switch between them.
Does the Two Stones have speaker cabinet simulation?
Yes. Every pedal in the Micro PreAMP series, including the Two Stones, comes with integrated speaker cabinet simulation, so you can run it straight into a mixer, interface or power amp and still get a speaker-filtered sound.
What power supply does the Two Stones need?
It runs on 9V DC, center negative, and draws 300mA. That current draw is high for a mini pedal, so a dedicated output from a pedalboard power supply is a better fit than a small daisy chain.
Is there a demo video of the Two Stones?
Yes, MOOER's product page for the Two Stones carries a demo video by Brett Kingman, in English, alongside the pedal's specifications and channel descriptions.
Sources (7)
- Micro PreAMP 010 Two Stones by MOOER, RockBoard (rockboard.de PedalPedia), 2026
- Mooer Unveils Three New Micro Preamp Mini-Pedals, Guitar World, 2018-08-22
- Micro PreAMP 001 Gas Station by MOOER, RockBoard (rockboard.de PedalPedia), 2026
- Micro PreAMP 008 Cali-MK 3 by MOOER, RockBoard PedalPedia, 2026
- Micro PreAMP 007 Regal Tone by MOOER, RockBoard (PedalPedia), 2026
- Micro PreAmp 013 Match Box by MOOER, RockBoard (rockboard.de PedalPedia), 2026
- Micro Preamp 014 Taxidea Taxus by MOOER, RockBoard (rockboard.de PedalPedia), 2026
