KORG Pitchblack X Pro - 1U Chromatic Tuner with Ultra Buffer, 3D Meter, and Front/Rear I/O

KORG Pitchblack X Pro - 1U Chromatic Tuner with Ultra Buffer, 3D Meter, and Front/Rear I/O

The KORG Pitchblack X Pro is the 1U rackmount chromatic tuner designed for stage and studio use that prioritize visibility, accuracy, and easy integration into any system. Its multi-color “3D” meter provides instant readability from multiple angles, while ±0.1 cent accuracy in strobe mode ensures surgical tuning. It features the next-generation ULTRA BUFFER to preserve pitch over long cable runs and chains, plus front and rear outputs , MUTE functionality , and a cable checker for instant troubleshooting.

Designed for a variety of setups, the Pitchblack X Pro includes mounting adapters that allow it to be installed in a standard EIA rack or used as a desktop/floor stand by securing it to the base. The front panel features INPUT1 , OUTPUT1 , and CABLE CHECK ; the rear panel features INPUT2 , OUTPUT2 , and a 9 V DC socket . The instrument works in equal temperament , detects from E0 (20.60 Hz) to C8 (4.186 kHz) , and can calibrate A4 from 436 to 445 Hz in 1 Hz steps. It also includes “just-in-tune” indication (the triangles on the sides flash when the note is perfectly in tune) and four display modes (Regular, Strobe, Half-Strobe, and Focus) with five selectable color schemes. It is powered by a 9V AC adapter (included) , offers auto-off after 4 hours of no interaction, and features a compact chassis measuring 430 × 50 × 44 mm (482 mm wide with rack ears) and weighing 379 g .

Main features

• Professional accuracy up to ±0.1 cent (strobe mode) for critical fine-tuning.
• Multi-color “3D” meter with five color patterns for maximum visibility in live and studio settings.
• Built-in ULTRA BUFFER to maintain brightness and definition on long chains and complex pedalboards.
• Four display modes : Regular, Strobe, Half-Strobe and Focus.
• “Just-right tuning” : visual confirmation when the note is at its exact point.
• Cable testing via dedicated CABLE CHECK jack on the front panel.
• Front and rear I/O (INPUT1/OUTPUT1 + INPUT2/OUTPUT2) for greater connection flexibility.
• MUTE function for silent tuning from the front panel.
• Wide detection range : E0–C8; calibration A4=436–445 Hz.
• Rack adapters included and use as a desktop stand when mounted on the base.
• Powered by 9V AC adapter (included).
• Dimensions and weight : 430 × 50 × 44 mm (482 × 50 × 44 mm with ears); 379 g.

Benefits for the musician and the technician

• Immediate reading in any environment thanks to the 3D meter and selectable color schemes.
• Tone preserved in bypass by the ULTRA BUFFER, ideal in racks with many meters of cable.
• Versatile mounting : in a 19” rack, on a table or at the foot of the backline, with I/O at the front or rear depending on the signal flow.
• Silent operation with MUTE and preventive cable checking to avoid live incidents.

Use cases

• Touring rack for guitars and basses: rear input from the patch bay and direct output to the system, with MUTE for quick changes.
• Pedalboard or tabletop : use of the ears as a support, front connection and tuning visible from a distance.
• Studio : Precision tuning for critical shots with “just-right” visual confirmation.

Frequently Asked Questions

• Does it have true bypass? The Pitchblack X Pro uses a buffered signal path and has a MUTE function for silent tuning; it does not offer true bypass mode.
• Can it be used for bass? Yes. Its E0–C8 range covers typical low electric bass tunings.
• Does it include a power adapter? Yes, it comes with a 9V AC adapter , along with hardware and rack ears.
• Can I change colors and modes? Yes. It allows four measurement modes and five color schemes from the panel buttons.

Description for projects

KORG Pitchblack X Pro 1U Chromatic Tuner; equal temperament ; E0–C8 range ; A4 calibration = 436–445 Hz (1 Hz); accuracy ±0.1 cent (strobe); Regular/Strobe/Half-Strobe/Focus modes ; 5 LED colors ; 1 MΩ input impedance ; front connectors INPUT1, OUTPUT1, CABLE CHECK; rear connectors INPUT2, OUTPUT2, DC 9 V; switched MUTE ; Cable Check function ; ULTRA BUFFER in signal pass-through; power supply: 9 V AC adapter (incl.); auto power off 4 h; dimensions 430 × 50 × 44 mm (482 × 50 × 44 mm with lugs); weight 379 g.