Features:

• Compact chromatic tuner, ideal for brass band or orchestra
• High-precision LCD needle-type meter for stable tuning
• Wide range of pitch detection covers C1--C8
• Calibration function supports a variety of concert pitches
• Reference tone can be produced from an internal speaker. (Sound Out)

Editor Reviews:

Product Description:
The Korg CA-30 is a compact chromatic tuner with high-tech features, ideal for brass band or orchestra instruments. Tuning - 12 note equal-tempered Detection range - C1 (32.70Hz) - C8 (4186.01Hz) Reference tone - C4 (261.33Hz) - C5 (523.25Hz), One octave (Built-in Speaker) Tuning modes - Meter (auto), Sound (manual) Calibration - 410 - 480Hz (1Hz steps) Tuning accuracy - +/-1cent Sound accuracy - +/-1.5cent Connection jack - Input jack (1/4 mono) Power supply - Two AAA batteries 3V Battery life - Approximately 100 hours Dimensions - Wide 4.1 x Depth 2.52 x Height 0.6 (104mm x 64mm x 15mm) Weight - 2.86 ounces (81 grams) including the batteries

Rating : - Great Tuner!
Great tuner and very compact too! As soon as I got it, I popped in the batteries and was ready to tune my guitar. Worked like a dream. I also like the fact that I can tune other instruments as well if needed. My only complaint is that sometimes it can be very sensitive and if other people are talking or listening to tv in the same room, it can pick up other frequencies. But as long as you are in a quiet room, it works perfectly.