Love performing live? Then plug in and play like a pro. The Radial Pro48 Active DI Box ensures the best sound possible. With a high-performance transformer on board you get pristine signal integrity for your guitars and other line-level instruments. No unwanted noise. Just great sound. The Pro48 eliminates buzzing from ground loops so youll always get the clearest sound. And with a -15dB pad at hand youll never have to worry about distortion when plugging in your high output instruments Perfect for any setup. Thanks to its robust compact construction the Pro48 can be introduced into the tightest of stage or studio spaces. Never worry about knocks and drops getting in the way of your performance. With its metal chassis youre ready for any challenge. For the musician who demands the best Performance and practicality combined. At the heart of the Pro48 is a custom-built transformer delivering a frequency response of 20Hz to 40kHz. No matter how high your signal level gets you can rest assured that this active workhorse is able to withstand tremendous transients without distortion. The Pro48 is the ultimate companion for battery bowered active basses and acoustic guitars that often overload other DI boxes. Instead Radial promise an unfaltering sonic performance with a smooth linear response and increased headroom. Features Compact active DI perfect for stage and studio use Handles huge transients without distorting Increased dynamic range and headroom Eliminate noisy ground loops with built-in transformer isolation Pristine signal for line level instruments with a 1/4” jack input No batteries or power supply required thanks to 48V phantom power operation Check your 48V phantom power is working with the LED indicator Easily reduce input sensitivity for basses and keyboards with the -15dB pad switch Hi-impedance thru will not load-down instrument tone High-quality powder coat keeps your DI looking great for years to come Specifications Audio circuit type: Proprietary analog circuit with low-noise op-amp Frequency response: 20Hz 20kHz (± 1.5 dB) Dynamic range: 99dB Noise floor: -82dB below 0dBu Maximum input: +9dBu Phase deviation: +28º at 20Hz | +1º at 1kHz | -2º at 20kHz Input impedance: 220k? – 1/4″ input Output impedance: 600? – XLR output Input pad: -15dB Ground lift: Disconnects pin-1 at XLR output XLR configuration: AES standard (pin-2 hot) Power: 48V phantom – proprietary digital switching Construction: 14 gauge steel chassis and outer shell baked enamel finish Size: 2.75″ x 4.25″ x 1.75″ (70 x 108 x 45mm) Weight: 1.2 lb (544 g)