The Proel DIRECT100A Active Direct Injection Box is a range of accessories and useful tools designed to complement audio systems for stage applications, recording studios and fixed installations. Hosted in a stylish extruded and stackable aluminum chassis, this box offers quality, versatility and reliability in an affordable package. FeaturesActive Direct Injection BoxHigh quality isolation transformer for ultra-flat frequency responseLow-noise OP amps with high-quality sound performanceXLR-F and ¼" JACK input connectors + ¼" JACK linkXLR-M balanced output20dB PAD and GND lift switchStackable aluminum shellSpecificationsType: 1 channel active DIWidth: 152 mm (5.98424 inch)Height: 50 mm (1.96850 inch)Depth: 134 mm (5.27558 inch)Weight: 0.7 kg (1.5435 lb)Input Impedance: >250 KohmOutputs: Transformer Balanced (fully isolated)Connectors: XLR maleFrequency response: 10 Hz to 40 kHz (-3 dB)Controls: ON/OFF, PAD -20, GND LIFTBattery: 9 volt PP3 type alkaline