Pro Co Sound CB1 Standard Passive Direct Box with Ground Lift Switch

The Pro Co Sound CB1 is a simple passive direct box that offers clean, reliable performance with nearly any unbalanced signal source, including electric bass, acoustic guitar pickups, keyboards, drum machines and mixer outputs. Using the CB1 is a convenient, low-cost alternative to micing speakers. It reduces distortion and coloration and eliminates bleed and leakage from other instruments. The signal delivered to the P.A. or studio mixer is crisp, clean and full - a vital element in retaining the awesome bass and brilliant sound of digital instruments such as synthesizers and digital-sampling drum machines. The CB1 shares the heavy-duty Uni-box construction with Pro Co's premium TradeTools DB1 Direct Box. The rugged 16-gauge steel and aluminum box is finished in black with a bold blue Lexan overlay emblazoned with high-visibility control and connector identification graphics. The uniquely slotted side channels allow for stacking on top or strapping side-to-side of virtually any number of Pro Co TradeTools devices using the Uni-box construction. The GND position connects input and LO-Z output grounds together. Lift position floats LO-Z Output. It is used to reduce hum and buzz by eliminating ground loops and providing proper grounding for various conditions. Includes: Pro Co Sound CB1 Standard Passive Direct Box - Pro Co Sound RapcoHorizon 5 Year Warranty Features: High Input Impedance Minimizes Source Loading for Maximum Performance Floating Transformer-Balanced XLR Output for Maximum Isolation GND/LIFT Switch Eliminates Hum and Buzz Handles Line-Level Inputs to 20 dBv at 20 Hz Rugged Uni-box Construction Provides Protection and Shielding Flush-mounted Switches and Connectors Resist Damage Passive Design Requires No Batteries or Phantom Power Specifications: Input Impedance: > 185 KOhms at 1.0 kHz 140 KOhms at 10 kHz Nominal source impedance is <20 KOhms Output Impedance: < 130 Ohms at 1.0 kHz < 155 Ohms at 10 kHz Nominal load impedance is >1.0 KOhms Maximum Input Level for 1% THD: 20 dBv at 20 Hz 26 dBv at 30 Hz 32 dBv at 50 Hz Frequency Response: 20 Hz-20 kHz, /- 1.0 dB at -15 dBv output -3 dB at approximately 57 kHz Total Harmonic Distortion: < .1% 20 Hz-20 kHz at -30 dBv output < .5% 30 Hz-20 kHz at -15 dBv output < 1.0% 20 Hz-20 kHz at -15 dBv output Voltage Stepdown: < 23 dB at 1.0 kHz Phase Response: < -25 deg. at 20 kHz (ref. 1.0 kHz) Risetime: < 6.0 microseconds (2.0 kHz square wave, 10%-90%) Input: 1/4 (6.3mm) phone jack Output: 1/4 (6.3mm) phone jack Lo-Z Output: Male 3-pin XLR-type connector Dimensions (D x W x H): 4.88 x 4.38 x 1.75 / 12.39 x 11.12 x 4.44cm Weight: 1lbs / 0.45kg