

The Mastermind PBC by RJM Music Technology is a versatile pedalboard controller designed to provide comprehensive audio routing, switching, and MIDI control capabilities. There are two models available, the PBC/6X and the PBC/10, each with distinct specifications and features.
Mastermind PBC/6X Specifications:
- 6 audio loops, 3 of which are stereo capable
- Buffered insert loop that can be reordered
- 2 outputs for stereo or A/B switching
- 3 audio buffers with Click Stopper noise reduction circuit
- 11 buttons with multi-color LED indicators
- Built-in tuner
- MIDI input and output connections
- USB device port for PC or Mac connectivity
- Two 1/4-inch TRS jacks for function switches
- Expression pedal input
- External switch input for additional switches
- Mac and PC editor software for comprehensive editing
- Dimensions: 10.1" (w) x 4.4" (d) x 2.4" (h)
- Weight: 2 lbs / 0.9 kg
- Power Requirements: 9VDC or 12VDC 220mA
Mastermind PBC/10 Specifications:
- 10 audio loops arranged in groups
- Last four loops are stereo capable using TRS jacks
- Series and parallel routing options for the last four loops
- Two outputs for stereo or A/B switching
- Switchable isolation transformer and programmable phase switch for the B
output
- 3 audio buffers with Click Stopper noise reduction circuit
- 11 buttons with multi-color LED indicators
- Built-in tuner
- MIDI input and output connections
- USB device port for PC or Mac connectivity
- Two 1/4-inch TRS jacks for function switches
- Expression pedal input
- External switch input for additional switches
- Mac and PC editor software for comprehensive editing
- Dimensions: 17.5" (w) x 5.5" (d) x 3.33" (h)
- Weight: 4 lbs / 1.8 kg
- Power Requirements: 9VDC @ 500mA, 12VDC or 9VAC @ 400mA
Both models can control up to 16 MIDI devices and assign 20 MIDI messages per button (PC, CC, Note, Sysex). They offer extensive preset and song management capabilities, making them suitable for controlling MIDI-capable pedals and amps. The PBC/10 also includes a USB host port for firmware upgrades and settings backup.
Watch the latest video demos and reviews for the Mastermind PBC from YouTube. Stompbx updates this every six months to reflect the most popular reviewers and guitar pedal demos for each pedal.
Below are live Reverb listings for the RJM Mastermind PBC from Reverb. Stompbx automatically aggregates current offers to give you a quick look at available models, conditions, and prices. Perfect for comparing options and making an informed purchase.
Excellent
$990.56
Very Good
$1,750.39
Excellent
$791.02
Mint
$1,222.82
Mint
$700
Brand New
$947.62
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