Radial Engineering Gold Digger Passive 4X1 Selector, Use To Compare 4 Microphones, XLR I/O

Radial Engineering's Gold Digger is a 4-channel mic selector that enables the engineer to quickly compare the sound of four different microphones while sharing the same preamp. A 'straight wire' passive circuit design is void of any audio buffers or transformers. Instead, the Gold Digger employs military-grade gold contact relays to manage the switching process, thus ensuring the pristine mic signal is maintained without introducing color, distortion or artefact of any kind.

Features include four rear-mounted XLR-F mic inputs plus an XLR-M output to feed the preamp. To eliminate bleed between microphones, each channel is equipped with a 'radio style' selector switch that ensures only one mic is on at a time. The external supply provides power for the LED indicators, charges the relays and enables the Gold Digger to generate 48 volt phantom which can be turned on or off for each mic as needed. To ensure an 'honest' comparison between microphones, individual 'set & forget' trim controls let you adjust each mic level so that they produce the same relative output. Once set up, the Gold Digger not only improves workflow, but also gives the artist more confidence with the sound of the vocal, resulting in a better overall performance.

Applications

• Comparing four studio condenser mics quickly and efficiently without the need to swap cables
• Comparing four direct boxes, active and passive, to find the perfect sound
• Selecting a wireless system in live touring situations where you may want to direct as many as four different wireless systems to a single audio input channel in the PA system
• Pairing with the Radial Cherry Picker for maximum versatility, allowing you to switch seamlessly between four mics and four preamps.

Features

• Four selectable inputs with trim adjusts
• Straight wire distortion-free signal path
• Will not introduce color or artifact
• Built-in +48V phantom power
• Increases artist's confidence when recording

Specifications

• Audio Circuit Type: Passive signal path with active relay switching
• Frequency Response: 10 Hz to 100 kHz, ±0.0 dB
• Dynamic Range: >140 dB
• Gain: 0.0 dB (unity gain device)
• Total Harmonic Distortion: 0.0003%
• Intermodulation Distortion: 0.001%
• Phase Deviation: < 0.001° at all frequencies
• Input Connectors: 4 x XLR female
  • Impedance: 600 Ω typical
  • Common Mode Rejection Ratio (CMRR): -92 dB @ 55 Hz
  • Equivalent Input Noise: -115 dB
  • Noise: -140 dB
  • Maximum Input Level: +26 dBu
• Output Connector: XLR male
  • Maximum Output Level: +26 dBu
• Features: Level Control, Phantom Power
• Construction: 14-gauge steel chassis and outer shell
• Dimensions (H x W x D): 4.5" x 6" x 2"
• Weight: 2.8 lbs.
• Conditions: For use in dry locations only, 5-40°C