This unit is equipped with a protection circuit. A brief interval (a few seconds) after power up is required before the unit will operate normally. However, I fail to see an advantage to this method as opposed to daisy chaining straight from the adapter, and using something like this. It would make sense if you could power other pedals though TU-3’s battery. But, Boss clearly states that this power passthrough is only available if you use a power adapter. As far as the design, the tuner itself is just the right amount of ornate. This design is something that most pedal manufacturers use as their go-to, so it’s nothing new. But, I still prefer this over the simple box and a toggle switch that most tuners nowadays go for. The TU-3 retains the following settings in memory. If desired, you can restore these settings to their factory-set condition. Stored setting When an AC adapter is used, you can connect a PCS-20A parallel DC cord (optional) to supply power to effects processors and other PSA adaptor-compatible gear.

Simple yet very effective; the TU-3 automatically mutes when activated so you’re not detracting from the show or upsetting your audience with the sound of strings tuning. Different Tuning Modes Born into a musical family, Chris Payton has become a master guitarist by the age of 20, with a highly versatile style that includes a diverse range of influences. Read more… Donna Grantis Riffing Heavy with Prince & 3RDEYEGIRL There's an art to assembling a pedalboard. Learn to perfect your effects signal chain and capture the tone you've been seeking. Read more… What is the Waza Craft Pedal Line? TU-3 comes with a GP 1604G 9V 300mAh battery already installed. It’s hidden under the foot pedal, sitting in its compartment, connected via two wires. You access the battery cavity by unscrewing the hand screw on the front side of the pedal (bottom right on the image below). TU-3’s battery compartment.When the Accu-Pitch Sign function is on, the meter lights stream toward the center of the display when stable tuning at the correct pitch is reached.

The battery that was supplied with the unit is for temporary use, intended primarily for testing the unit's operation. Flat tuning is supported with Guitar Flat mode, which allows for "down" tunings up to six semitones below standard pitch. The TU-3 can operate under two different modes. To switch between these, you use the button on the left labeled as Stream/Cent. First mode is the standard tuning mode where you tune your guitar until the green LED lights up in the middle. The second mode is more like a strobe, and you tune until the pattern stops spinning. Same results, but different methods. There’s a reason why the Boss TU-3 tuner is considered to be an industry standard. Sure, you could say that Boss is the Apple of guitar pedals, and there’s something to be said about being blindly loyal to a brand. But, the TU-3 tuner stands on its own feet, and it’s really a high quality piece of equipment. It does its job perfectly, and there’s very few things to dislike on it. If you’re playing standing up, you already have a pedalboard or you plan on making one, this tuner is a perfect choice. Before using this unit, carefully read the sections entitled: "USING THE UNIT SAFELY" and "IMPORTANT NOTES" (supplied on a separate sheet). These sections provide important information concerning the proper operation of the unit.The lowest digit of the current reference pitch (e.g., "0" when set to 440 Hz) blinks in the Note Name/String indicator. Guitar/Bass mode lets you tune by string number, with support for 7-string guitars and 6-string basses.

Flat tuning is also supported with Guitar Flat mode, allowing for drop tunings up to six semitones below standard pitch. Extremely Fast, Accurate and Well Built Brendon Small is a TV writer, producer, comedian, and voice actor who’s best known as co-creator of the hit animated series Metalocalypse on Adult Swim. Read more… The 21-segment LED metre allows for precise tuning with the brightness being adjustable so you can set it to your preference, making it suitable for dimly stages while the High-Brightness mode makes it so you can see the display clearly when playing outdoors in the sun. mA (DC 9 V, when High Brightness mode is on) Accessories Leaflet ("USING THE UNIT SAFELY,""IMPORTANT NOTE," and "Information") The bass string number is displayed. (Hi-C string is displayed as "C," Lo-B string is displayed as "b.")

Tech Specs

A short history of BOSS compact tuners. Read more… Chris Payton Blurring the Lines with BOSS Stomps