Tone King Royce Tube Preamp Pedal

The Tone King Royce Preamp brings the legendary sound and feel of classic AC-style amps to your pedalboard. Running on three high-voltage 12AX7 valves, it delivers the chime, richness and dynamic response that have made these British circuits so iconic. With two independent channels, built-in effects and extensive connectivity, it's a super-flexible solution whether you're playing live, recording or building a more complex rig.

Two channels, four classic AC voices

Each of the Royce Preamp's two channels features a Normal/Top Boost switch, giving you access to a wide range of classic AC-inspired tones. Normal mode delivers punchy cleans with a thick low end and warm highs, while Top Boost mode adds extra gain and chime for everything from edge-of-breakup sparkle to singing lead sounds. Because both channels offer the same controls and voicings, you can configure them however you like.

Authentic tube feel & built-in effects

The Tone King Royce Preamp also features Tone King's Zero-Watt Power Amp tech, driven by one of its three 12AX7 valves. This recreates the interaction between a preamp, phase inverter and power section, helping notes compress naturally and respond dynamically to your playing and guitar volume changes. Stereo reverb and tremolo are also onboard, providing everything from subtle ambience and vintage-style pulse to expansive stereo textures without the need for additional pedals.

Ready for modern rigs

This powerful pedalboard amp is packed with features aimed at today's guitarist. Dual balanced XLR outputs with built-in low-latency IR and power amp simulation allow for direct connection to PA systems and recording interfaces, while MIDI support enables preset recall and integration with larger switching systems. A stereo series effects loop is included for time-based and modulation effects, alongside a headphone output for silent practice and recording.

Synergy Editor software

The included Synergy Editor software unlocks deeper editing, access to 20 included OwnHammer IRs and storage for up to 128 MIDI-recallable presets. Here are all of the savable parameters:

• Channel switching and bypass states.
• Easily load your own IRs and manage your IR library.
• IR bypass and power amp simulation options.
• HF Comp and Low-Pass filters.
• Access all 20 included OwnHammer IRs.
• Assign any of your IRs to the pedal's six available slots (three per channel).
• Reverb, reverb tails and effects loop bypass routing.
• Save these settings to up to 128 presets for instant recall via MIDI.

• Three 12AX7 preamp valves: Running on three genuine 12AX7 tubes at high voltage, the Royce delivers the dynamic feel, harmonic richness and touch-sensitive response that players expect from premium valve-driven gear.
• Two independent channels with DI: Dial in and switch between two distinct sounds with ease, while built-in direct connectivity makes it simple to go straight to a PA, recording interface or monitoring setup.
• Built-in Zero-Watt Power Amp tech: This recreates the interaction between a preamp, phase inverter and power section for a more authentic amp-like playing experience.
• Extensive EQ & attenuation controls: Each channel is equipped with Attenuation, Cut, Treble, Bass, Middle and Volume controls, giving you plenty of scope to fine-tune your tone.
• Independent Top Boost switches: Access classic AC-inspired voicings at the flick of a switch. Top Boost mode adds extra gain, chime and harmonic complexity, while Normal mode delivers punchy cleans with plenty of body.
• Assignable spring reverb: Built-in convolution spring reverb with dedicated Level and Dwell controls lets you add everything from subtle ambience to spacious vintage depth, independently on each channel.
• Stereo tremolo onboard: Add classic pulsating movement or wide stereo textures, complete with independent channel assignment and dedicated Depth and Speed controls.
• Stereo series FX loop: Perfect for integrating modulation, delay and reverb pedals into your rig. The effects loop can also be bypassed when you want the purest signal path possible.
• Dual Ironman attenuators: Enjoy Tone King's acclaimed attenuation tech built right in, helping you dial in your preferred response and feel without compromising your core tone.
• Full MIDI control: Save and recall up to 128 presets via an external MIDI switcher, making it easy to access different channel, IR, effects and bypass configurations at the touch of a button.
• Built-in IR cabinet simulation: Connect directly to FOH systems, audio interfaces or headphones with low-latency cab simulation. With 20 included OwnHammer IRs and per-channel IR selection, there's plenty of flexibility on tap.
• Customisable power amp simulation: Fine-tune the Royce to suit your setup using the Synergy Editor software, with editable HF Comp, High-Pass and Low-Pass filters available on a per-channel basis.

General

• Two-channel high-voltage tube preamp pedal with DI
• Three 12AX7 preamp tubes
• Built-in Zero-Watt Power Amp (phase inverter circuit)
• Each channel features: Attenuation, Cut, Treble, Bass, Middle and Volume controls
• Top Boost switch per channel
• Spring reverb (convolution) with Level and Dwell controls, independently assignable to each channel
• Stereo tremolo with Depth and Speed controls, independently assignable to each channel
• Stereo, series FX loop perfect for modulation, reverb and delay pedals (this can be bypassed)
• Dual built-in Ironman attenuators
• MIDI programmable
• Save up to 128 presets for instant recall via an external MIDI switcher, with presets saving channel selection, master bypass setting, IR selection, IR bypass setting, effects loop bypass setting, reverb bypass and tails settings
• Onboard impulse response (IR) technology with low-latency cabinet simulation (which can be bypassed), a 3-position CAB/IR select switch per channel (programmable via software) and 20 included OwnHammer IRs
• Power amp simulation with Synergy software editable HF Comp, Low-Pass and High-Pass filters (per channel)

Connections

• Dual stereo balanced XLR outputs with Ground Lift switch
• Headphone output
• Effects Send and Stereo Return jacks
• MIDI 5-pin standard connector
• USB-C connector for use with the included Synergy Editor software
• Comprehensive routing options to add Royce channels to your existing amp or preamp (Bypass Send, Bypass Return and Main Out)

Included accessories

• 6’ USB cable
• Universal 12V power supply

Weight & dimensions

• Dimensions (W x D x H): 7.2 x 5.7 x 2.75 inches / 183 x 145 x 70 mm
• Weight: 1.9 lbs / 862 g