dbx 676 Tube Microphone Preamp Channel Strip
The dbx 676 Tube Microphone Preamp Channel Strip is a professional audio channel strip featuring a Class-A 12AU7A vacuum tube preamplifier. It provides balanced XLR and unbalanced ¼” line outputs, supporting +48V phantom power and a 20dB pad. Procure.ae supplies this unit for businesses in the UAE.
The dbx 676 delivers high-fidelity signal processing with a Class-A 12AU7A tube preamp powered by +250V DC grid and +12V DC heater supplies. It features a female XLR Pin 2 Hot mic input at 1.9 kΩ impedance, alongside a Tip-Sleeve ¼” instrument input rated for +21dBu unbalanced signals. The unit includes a sidechain insert with 1 kΩ output and 50 kΩ input impedance, ensuring precise control over dynamic processing.
Output options include Male XLR and Tip-Ring-Sleeve ¼” connectors, offering balanced 30 Ω and unbalanced 15 Ω impedances with max levels exceeding +21 dBm into a 600 ohm load. Frequency responses reach 20 Hz to 50 kHz for mic inputs and 30 Hz to 70 kHz for instruments. Controls include an instrument selector, +48V phantom power via 6.81 kΩ resistors, and a 20dB pad switch.
Key features
Specifications
| Model | 676 |
| Type | Tube Microphone Preamp Channel Strip |
| Audio In | Female XLR, Tip-Sleeve ¼” (instrument) |
| Audio Out | Male XLR, Tip-Ring-Sleeve ¼” |
| Frequency Response | 20 Hz to 50 kHz (mic), 30 Hz to 70 kHz (instrument) |
| Impedance | Mic: 1.9 kΩ; Instrument: 500 kΩ; Line out balanced: 30 Ω |
| Phantom Power | +48V DC via 6.81 kΩ resistors |
| THD | 0.25% typical (mic in), 0.2% typical (instrument in) |
| Connectivity | Female XLR, Tip-Sleeve ¼”, Tip-Ring-Sleeve ¼” |
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This sheet is compiled from the product data held on procure.ae. For fully accurate and up-to-date figures, always refer to the manufacturer’s own specification sheet or datasheet for this model.
Specifications are provided by the manufacturer and may change without notice.
Pricing is quote-based. Contact Procure for current pricing and availability.
Delivery across the UAE and beyond, installation on request and manufacturer-backed warranty.
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