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Key Features
- Compact always-on tuner
- Always-on format saves space and suits switching systems
- High Brightness mode improves screen visibility outdoors
- Supports flat tunings for 7-string guitars and 6-string basses
Boss TU-3S Chromatic Tuner Overview
The Boss TU-3S Chromatic Tuner is a compact and always-on tuner that delivers the trusted performance of the TU-3 in a smaller footprint. Designed to save valuable pedalboard space, it features the same bright 21-segment LED display and tuning precision, with Chromatic, Guitar, and Bass modes, plus support for drop tunings and extended-range instruments.
Ideal for pedal switching systems like the BOSS ES-8 and ES-5, the TU-3S stays constantly active without a footswitch, ensuring instant tuning feedback. It requires a PSA-series power adaptor and cannot be powered by batteries.
Product Ref: 71772
Full Description
View Full DescriptionCompact design for space-saving setups
The Boss TU-3S Chromatic Tuner is purpose-built for pedalboards where every inch counts. By eliminating the footswitch, it delivers the same trusted tuning performance as the TU-3 in a smaller, always-on format. This makes it perfect for compact rigs, fly boards, or setups that rely on loop switchers like the BOSS ES-8 and ES-5.
High visibility in any environment
With a bright 21-segment LED meter and a High Brightness mode, the TU-3S ensures excellent visibility on dark stages and in bright outdoor settings. This makes accurate tuning fast and easy, no matter where you're performing. The optional brightness boost is especially useful during outdoor gigs or festival sets.
Flexible tuning options
Designed to support a wide range of instruments, the TU-3S handles standard guitars, 7-strings, bass guitars, and drop tunings with ease. It includes Chromatic, Guitar, and Bass modes, plus flat tuning capabilities. Accu-Pitch Sign offers clear visual confirmation once tuning is complete, streamlining your setup process.
Power-efficient and pedal-ready
The TU-3S integrates seamlessly into powered pedalboards and requires a PSA-series adaptor for operation, as it cannot run on batteries. Its DC Out jack also allows you to power up to seven BOSS compact pedals with an optional daisy chain, helping you keep your rig efficient and organised.
Specifications
- Product Name: Boss TU-3S Chromatic Tuner
- Product Code: TU-3S
- Tuning Range: C0 (16.35 Hz) – C8 (4,186 Hz)
- Reference Pitch: A4 = 436–445 Hz (1 Hz steps)
- Tuning Accuracy: ±1 cent
- Tuning Modes: Chromatic, Chromatic Flat x2, Guitar, Guitar Flat x2, Bass, Bass Flat x3
- Display Modes: Cent mode, Stream mode
- Bypass: Buffered
- Power Supply: PSA-series AC adaptor (sold separately)
- Current Draw: 30 mA (normal), 85 mA (High Brightness mode)
- Input Impedance: 1 MΩ
- Output Impedance: 1 kΩ
- Recommended Load Impedance: 10 kΩ or greater
- Controls: MODE button, STREAM/CENT button
- Indicator: CHECK indicator (power on)
- Connectors: INPUT jack (1/4"), OUTPUT jack (1/4"), DC IN jack, DC OUT jack
- Accessories Included: Parallel DC cord (DC Plug x2), rubber foot, leaflet
- Optional Accessories: PSA-series AC adaptor, PCS-20A daisy-chain cable (DC Plug x8)
- Dimensions (W x D x H): 73 x 84 x 56 mm / 2-7/8" x 3-5/16" x 2-1/4"
- Weight: 220 g / 8 oz
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