The 3rd Avenue RT100 is a chromatic clip-on tuner for guitar, bass, violin, mandolin and ukulele. It clips onto your instrument, picks up the note as you play and shows on a backlit LCD screen whether you are flat, sharp or in tune, with ±1 cent accuracy.
Tuning Modes for Guitar, Bass, Violin and Ukulele
Six tuning modes cover Chromatic, Guitar, Bass, Violin, Ukulele C and Ukulele D. Ukulele C is standard G C E A tuning, while Ukulele D tunes a whole tone higher to A D F# B. The tuner is calibrated to A4 = 440 Hz and covers a range of A0 (27.5 Hz) to C8 (4186.01 Hz), so you can use Chromatic mode to tune a mandolin or any note within that range.
Backlit LCD Display
The screen shows the note name alongside a needle-style indicator. If the indicator points left the note is flat and if it points right the note is sharp. The screen lights when you are off pitch and turns green when the indicator sits in the centre and the note is in tune. The display sits on an adjustable axis, so you can angle it for the clearest view.
Simple One-Button Operation
A single function button controls the tuner. Press and hold it for two seconds to switch on or off, and press it briefly to move through the tuning modes. The tuner switches off automatically after three minutes without use to save battery, and a CR2032 battery is included.
Who Is This Clip-On Tuner Suitable For?
The RT100 suits beginners and experienced players who want a quick, accurate way to tune at home, in lessons or at rehearsals. At 19 g and 50 x 26 x 76 mm, it is small enough to keep in a gig bag or case and to leave clipped to your instrument while you play.
Key Features
- Chromatic clip-on tuner with ±1 cent accuracy
- Six tuning modes: Chromatic, Guitar, Bass, Violin, Ukulele C and Ukulele D
- Backlit LCD screen that turns green when your note is in tune
- Sturdy clip with an adjustable axis for the best viewing angle
- One-button operation with automatic power off after 3 minutes
- Lightweight at 19 g
- CR2032 battery included
Specification
- Model: 3rd Avenue RT100
- Type: Chromatic clip-on tuner
- Tuning modes: Chromatic, Guitar, Bass, Violin, Ukulele C, Ukulele D
- Reference pitch: A4 = 440 Hz
- Tuning range: A0 (27.5 Hz) to C8 (4186.01 Hz)
- Accuracy: ±1 cent
- Display: Backlit LCD
- Auto power off: After 3 minutes without use
- Battery: 1 x CR2032 (included)
- Dimensions: 50 x 26 x 76 mm (L x W x H)
- Weight: 19 g

















