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Technical Specifications
Internal components
The core of the VDA12 is a SHARC DSP engine driving four channels of amplification from four inputs. The
VDA18 also features a flash memory for preset storage and management, high performance A/D-D/A
converters and AES/EBU inputs for audio signals, a universal SMPS (Switched Mode Power Supply) with PFC
(Power Factor Correction), a front panel user interface, and a 1 Gb/s Ethernet dual port.
Signal inputs
The VDA12 features four input connectors allowing it to receive four analog signals, four digital signals
depending on the input mode selected by the user.This architecture also allows digital-to-analog fallback.
DSP architecture
• The proprietary algorithms allow optimum performance and protection of each individual transducer of the
VDA Controller systems for an even more natural, transparent and realistic sound experience.
• The DSP engine is a 32-bit floating point DSP at 96 kHz sampling rate providing an enhanced dynamic
range since it does not generate calculation clips like a fixed point DSP.
• A dedicated engineering approach combining IIR and FIR filters generates perfectly linearized phase
curves and significantly improved impulse responses.
• The 4 x 4 matrix architecture offers flexibility for various system configurations.
• A delay of up to 500 ms / 200ms can be set for each input and output channel.
• With a complete factory preset library and the possibility to create additional user presets.
Power supply and amplifier section
The VDA12 is a green amplified controller that relies on a universal SMPS (Switch Mode Power Supply)
suitable for mains from 100 to 240 V (±10 %). The SMPS features a PFC (Power Factor Correction) which
maximizes the amplifier efficiency and takes advantage of nearly 100 % of the electrical power available
with a very high tolerance to unstable mains. This represents a reduction of the electrical power
requirements (cable gauge, power conditioning, etc.) for substantial savings.
The Class D amplification circuits ensure the VDA18 energy-efficiency for minimal heat dissipation.
VDA12 controller 4 x 600 W RMS at 16 Ω, 4 x 1200 W RMS at 8 Ω
4 x 2000 W RMS at 4Ω, 4 x 2000 W RMS at 2.7Ω
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