TU-88
Micro Monitor & Tuner
TU-88: Micro Monitor & Tuner
Triple-Function Monitor/Tuner for Guitar and Bass
Features
Small, cool and feature-packed, BOSS’ new TU-88 is a must-have for guitar and bass players on the go. Available in black or white, it provides needle-accurate tuning, a metronome, and a headphone amp with speaker simulator for monitoring effects, including compact pedals.
- Three tuning modes (Chromatic, Guitar, Bass), Flat Tuning function and ACCU-PITCH verification with an audible beep
- Built-in headphone amp lets you tune, jam and play your effects with headphones or direct recording
- Built-in metronome with selectable rhythmic patterns and volume control
- MIX IN allows jamming with an external music-playback device (iPod, etc.)
Specs
- Tuning Range
- E0 (20.6 Hz) - C8 (4,186.0 Hz)
- Reference Pitch
- A4 (435- 446 Hz)
- Tuning Accuracy
- ± 1 cent
- Power Supply
- Dry battery 6F22/6LR61 (9 V) type, AC adaptor DC 9V (PSA series; optional)
- Current Draw
- 30 mA
- Expected battery life under continuous use (carbon)
- Approximately 8 hours
*This figure will vary depending on the actual conditions of use. - Accessories
- Dry battery 6F22 (9 V) type (carbon), Owner’s Manual, Leaflet (“USING THE UNIT SAFELY” and “IMPORTANT NOTES”), Information
- Size and Weight ( including battery )
- Width
- 140 mm
- 5-9/16 inches
- Depth
- 80 mm
- 3-3/16 inches
- Height
- 30 mm
- 1-3/16 inches
- Weight
- 0.2 kg
- 0 lbs. 7 oz.
- *The specifications are subject to change without notice.
Downloads
Brochures & Catalogs
Support
If you have questions about operating your Roland, BOSS or Cakewalk product, please check our Knowledge Base for answers to the most common questions.
You can also contact our Product Support department by phone or email.
In addition, we have a library of Owner’s Manuals and Support Documents that you can download and reference. If Support Documents are available for this product, they will be listed below.
Product Manuals
Support Documents
- BOSS Tuners Catalog 2009
- BOSS tuners are beloved by musicians around the world for their reliability, accuracy, and user friendliness. Since 1983, the TU-12 has been an industry standard. Today’s family of BOSS tuners melds the essence of the TU-12 with modern technology in a wide variety of models.

