Tone King Royalist Tube Preamp Pedal

The Royalist Tube Preamp Pedal captures the soul of Tone King’s beloved Royalist MKIII amplifier - the company’s most authentic take on the golden age of British tone. From the sweet, singing JTM45, through the unmistakable Plexi crunch, to the searing drive of the Super Lead, this high-voltage tri-tube preamp pedal delivers the full spectrum of British rock attitude in a compact, pedalboard-friendly format.

Running on three 12AX7 tubes at proper high voltages, the Royalist Preamp brings the complete touch sensitivity, harmonic bloom, and dynamic punch of the Royalist MKIII amp to your pedalboard. Each of its two independent channels features the amp’s FAT switch and three-way 1964/1967/1970 voicing selector, faithfully reproducing the gain structure, tone stack, and feel of the original circuits. Whether you’re chasing sparkling cleans, punchy crunch, or molten roar, the Royalist Preamp delivers the unmistakable voice of British rock, anywhere, at any volume.

THREE ERAS OF ICONIC BRITISH TONE.

Each channel of the Royalist Preamp offers its own three-position voicing switch, mirroring the evolution of the British amp sound across decades:

• 1964: Smooth top end, lower gain, and a balanced, vintage warmth inspired by early British blues amps.
  
• 1967: Crisp treble response, bold midrange, and the aggressive bite that defined rock’s formative years.
  
• 1970: Increased gain and tightness for that unmistakable, high-energy crunch of arena-ready hard rock.

Pair these voicings with each channel’s FAT switch option to add body and low-end warmth to single-coil guitars or enhance sustain and punch with humbuckers.

ERA ACCURATE TONE STACKS.

The Royalist features two identical channels, each voiced with its own distinct tone stack. The top channel uses a vintage-accurate JTM45 / Bassman / Super Bass inspired EQ. The bottom channel reflects a later-era British Lead tone stack.
While the two channels can be dialed remarkably close, their subtle differences give players two authentic British flavors—one tight and articulate, the other more mid forward.

BUILT-IN ZERO WATT POWER AMP — PHASE INVERTER.

The Royalist Preamp includes Tone King’s “Zero Watt Power Amp,” a genuine phase inverter circuit powered by one of its three 12AX7 tubes. This design captures the Royalist’s harmonic depth and dynamic interaction between preamp and power stage — a key ingredient of true British tone that most preamp pedals can’t replicate. The result is the full experience of an overdriven Royalist power section, without the ear-splitting volume.

FEATURES:

Two Channel High-Voltage preamp – DI
3 x 12AX7 preamp tubes running at proper high voltages
Built-In zero-watt power amp – phase inverter circuit
Two Independent channels with
Volume, Bass, Middle and Treble Control
Three-way 1964/1967/1970 voicing switch per channel
Era Accurate Tone Stacks:
Top channel – Vintage-accurate JTM45 / Bassman / Super Bass inspired EQ.
Bottom channel – Reflects a later-era British Lead tone stack.
Dual built-in Iron Man attenuators
HF switches
Reverb control (assignable to each channel)
Mode switch turns ON/OFF trails
Stereo, Series FX loop (bypassable)
MIDI programmable
Save up to 128 presets for instant recall via an external MIDI switcher
Presets save:
Channel selection
Master bypass setting
IR selection
IR bypass setting
Effects loop bypass setting
Reverb bypass and tails settings
Onboard Impulse Response (IR) Technology
Low-latency Impulse Response cabinet simulation (bypassable)
3-position CAB/IR select switch per channel (programmable via software)
20 Included OwnHammer IRs
Power amp simulation with software editable HF Comp, Low-Pass and High-Pass filters (per channel)
Connections:
Dual stereo balanced XLR outputs with Ground Lift Switch
¼” Headphone output
Effects Send and Stereo Return Jacks
MIDI 5-pin standard connector
USB-C connector for use with the included Tone King Editor software editor
To Amp In, From Amp Send and From Amp Return Jacks – for adding Imperial channels to your amp or preamp
Included
6’ USB Cable
Universal 12V Power Supply
Dimensions: 7.2” (W) x 5.7” (D) x 2.75” (H)
Weight: 1.9 lbs