Gold-Standard Strobe Tuning Precision Meets MXR Reliability
Close enough isn't good enough when your tone is on the line. The Guitar Sanctuary is thrilled to welcome back the legendary precision of Sonic Research design to our pedal collection with the MXR M400 Turbo Tune.
Engineered directly by Sonic Research founder Roger Schlichtig, this collaboration packs the core engine of the industry-standard Turbo Tuner into a road-tested MXR chassis. Delivering fraction-of-a-cent, real-time strobe accuracy, it locks in your tuning instantly whether you are under bright stage lights or tracking in the studio.
Sanctuary Expert Note: Ever since Sonic Research went direct-only post-COVID, our clients have begged for a way to get true Turbo Tuner performance in a standard store-supported format. MXR and Roger nailed this. It is hands-down the fastest, most accurate strobe tuner pedal on the market today—an absolute must-have for studio players and touring pros alike.
Product Intelligence Attributes
- Best For: Studio Recording, Live Performance, Session Work, Touring Pros, Worship
- Precision Rating: Fraction-of-a-cent real-time strobe tracking
- Tone Profile: 100% Transparent Signal Integrity (Switchable True/Buffered Bypass)
- Compared To: Original Sonic Research ST-300, Peterson Strobostomp HD, Boss TU-3
- Engineering: Designed by Roger Schlichtig (Sonic Research) & Built by MXR
Key Features & Performance Specs
- Sonic Research Engine: Built around the gold-standard Turbo Tuner core engine for instant, lag-free pitch tracking.
- Real-Time Strobe Display: Ultra-responsive display shows pitch movement instantly without digital calculation lag.
- 5 Customizable Presets: Supports alternate tunings, up to 12-string setups, and ±50 cent offsets.
- Stage-Ready Display: 4 adjustable brightness levels ensure perfect visibility from dark club stages to bright outdoor festivals.
- Flexible Signal Routing: Switchable True Bypass or Buffered Bypass (featuring 3 distinct buffered submodes).
- Pedalboard Friendly Utilities: 9V passthrough output powers an additional pedal; USB-C port enables firmware updates and future editor software connectivity.
We are open Tuesday-Saturday from 10am until 6pm CDT.
Any order placed before 3pm CDT Tuesday through Saturday is processed for shipment the same day. Orders placed Sunday-Monday will be processed for shipment the following Tuesday.
For Free Shipping items, Effects pedals and small goods items are generally shipped via USPS Priority Mail, and Guitars and Amplifiers are generally shipped via UPS Ground.
Due to our central location in the middle of the US, most orders will be delivered within 1-3 days delivery time.
Other shipping methods are available (at an additional cost), including next day air.
Please call us directly at (972)540-6420 if you have any questions regarding shipping for your order.
