The 1612 PRO from King Pedals is an analog pedal that puts tremolo and reverb in one box. It offers three modes: Harmonic Tremolo, Amplitude Tremolo and Room Reverb, and any of them can be used individually or together, so a player can run tremolo alone, reverb alone, or pair either tremolo type with the reverb1. RockBoard's PedalPedia describes it as "The Classic combination in a pedal loaded with features that are truly PRO"1.
What it does
The pedal's three modes cover the two main kinds of tremolo plus a room reverb. Amplitude tremolo is the familiar volume-pulsing effect, while harmonic tremolo splits the signal in a way that shifts its tonal balance rather than just its loudness. The Room Reverb mode adds a sense of space. Because the modes can be stacked, the pedal can act as a tremolo, a reverb, or a combined tremolo-and-reverb unit on a tremolo or reverb board1.
On the combined sound, the maker's own description is: "The tones generated by the combination of Tremolos and Reverbs are passionate and truly magnetic"1.
Power
The 1612 PRO runs on 9V DC, center negative, the standard pedal power arrangement, so it works with a normal pedalboard supply1.
Questions
Can the tremolo and reverb on the 1612 PRO be used at the same time?
Yes. King Pedals describes the 1612 PRO as offering Harmonic Tremolo, Amplitude Tremolo and Room Reverb, each usable individually or together. That means a player can run tremolo alone, reverb alone, or combine either tremolo type with the reverb in one pedal. The maker says the tones generated by combining the tremolos and reverbs are passionate and truly magnetic.
What is the difference between harmonic tremolo and amplitude tremolo?
The 1612 PRO offers both as selectable modes. Amplitude tremolo is the conventional approach of varying the signal's volume, while harmonic tremolo works on the frequency bands of the signal. The maker's product page lists both as choices on this pedal without going further into the circuit differences, so the practical answer is to try each mode and hear which suits the part being played.
Sources (1)
- 1612 PRO by King Pedals, RockBoard PedalPedia, 2026