Polytune 3

Tuner with buffer

The most advanced PolyTune yet
Built-in BonaFide Buffer preserves your tone for long cable runs
Switchable true bypass option puts you in charge of your signal path
Alternate tuning modes make it fast and easy to explore open/slide tunings
Always On option (Buffer mode only) provides continuous tuning feedback as you play
Save time tuning all strings at once*, or tune string by string — PolyTune 3 adjusts automatically
Precise strobe tuner is accurate to within 0.1 cents — great for double-tracking
Fast chromatic tuner (+/- 0.5 cents) automatically detects the note you're playing
Auto-dimming LED display is easy to read on dark stages or in direct sunlight
3-year manufacturer warranty makes the PolyTune 3 a smart investment
Designed and engineered in Denmark
Requires a standard 9V power supply (not included)

http://www.tcelectronic.com/polytune-3/