The Sanctuary Perspective

The Radial ProD2 is a compact, 2-channel stereo passive direct box designed to handle high-output stereo sources such as electronic keyboards, digital amp modelers, synthesizers, drum machines, and DJ setups. Featuring dual custom-wound Radial Eclipse ET-DB2 transformers, the ProD2 provides 100% galvanic isolation between left and right audio channels and connected PA systems, eliminating stubborn ground loops, 60-cycle buzz, and electrical noise. With completely passive operation requiring zero batteries or phantom power, the ProD2 is an essential, bulletproof stereo workhorse for live touring stages and studio rigs.

Product Intelligence & Signal Integrity Profile

• Best For: Stereo Keyboards, Synthesizers, Stereo Digital Guitar Modelers, Drum Modules, DJ Interfaces, and Live Stage Stereo Sub-Mixes.
• Sound Character: Warm, natural, and linear with pristine stereo phase alignment, smooth harmonic compression under high signal drive, and transparent frequency reproduction.
• Compared To: Houses two complete ProDI circuits inside a single roadworthy chassis, offering a clean, space-saving stereo interface instead of running two separate mono DI boxes.
• Sanctuary Expert Note: "The ProD2 is the ultimate insurance policy for keyboard players and stereo amp modeler users. Connecting stereo rig feeds directly into venue PA snakes almost always triggers ground hum. Handing FOH two isolated XLR outputs from a ProD2 guarantees a dead-quiet, high-headroom mix every single time."

Key Features & Stage Engineering Highlights

• Dual Custom Radial Eclipse ET-DB2 Transformers: High-nickel core transformers deliver linear frequency response from 20Hz to 18.5kHz with near-zero phase distortion across both channels.
• 100% Galvanic Channel Isolation: Completely isolates audio signal paths from ground grounds to block stray electrical noise and 60-cycle stage hum.
• Independent -15dB Input Pads: Selectable pads on Channel 1 and Channel 2 allow hot line-level feeds from high-output keyboards or audio interfaces to connect cleanly without saturating the transformers.
• Independent Ground Lift Switches: Individual ground lifts for left and right channels resolve ground loop hum without interrupting audio signal integrity.
• Zero Power Required: 100% passive design offers reliable, plug-and-play operation with no reliance on batteries or 48V phantom power.
• 14-Gauge Steel Book-End Construction: Housed inside Radial's signature heavy-duty steel I-beam shell to shield internal transformers from stage impacts and electromagnetic interference.

Technical Specifications

• Audio Circuit Type: Passive, Transformer-Based
• Transformers: Dual Custom Radial Eclipse ET-DB2 (12:1 Ratio)
• Number of Channels: 2 (Stereo or Dual Mono)
• Frequency Response: 20Hz – 18.5kHz (± 0.2dB)
• Dynamic Range: 128dB
• Total Harmonic Distortion (THD): 0.01% from 20Hz to 20kHz (@ -10dB)
• Maximum Input Level: +18dB @ 20Hz
• Input Impedance: 140kΩ Unbalanced
• Output Impedance: 150Ω Balanced XLR
• Switches: Individual -15dB Pads (CH 1 & CH 2), Individual Ground Lifts (CH 1 & CH 2)
• Connections: 2 x 1/4" Instrument Inputs, 2 x 1/4" Thru-Puts, 2 x Balanced XLR Outputs
• Power Requirement: None (100% Passive Operation)
• Chassis: 14-Gauge Steel Shell with Baked Enamel Finish

Specifications
Audio circuit type: Passive, transformer based
Transformer: Eclipse ET-DB2, 12:1 ratio
Number of channels: 2
Frequency response: 20Hz ~ 18.5KHz (± 0.2dB)
Dynamic range: 128dB
Total harmonic distortion: 0.01% from 20Hz~20kHz @-10dB
Phase Deviation: 1° @ 100Hz; 8° @ 20Hz
Input Impedance: 140k Ohms, unbalanced
Output Impedance: 150 Ohms, balanced
Maximum Input: +18dB @ 20Hz

Features
Input pad, 180° polarity reverse, Ground lift
Input Connectors: 1/4"
Output Connectors: XLR, 1/4" thru

General
Construction: 14 gauge steel chassis & outer shell
Size (L x W x D): 5" x 3.3" x 1.8" (127mm x 84.1mm x 45.5mm)
Weight: .54kg (1.2lbs)
Power: Passive, no power required
Conditions: For use in dry locations only between 5°C and 40°C
Warranty: Radial 3-year, transferable