Quad digital power amplifier in a lightweight 1U rack-mountable format. An energy-efficient switch-mode power section and class-D amplifiication circuit delivers accurate power-on-demand to four independent speaker outputs. Proprietary cool guide technology provides stable temperature management for dependable operation. Each pair of output channels can be separately parallel switched or bridged as a full or part stereo amplifier configuration. For channel A, there is a switchable 120Hz low-pass filter for use with subwoofers and a channels C and D have a switchable stereo pair of 120Hz high pass filters to effectively focus power in full-range cabs operating as mid-tops in conjunction with sub-woofers. For permanent or mobile installations, the D-series offers an invaluable and flexible problem solver for audio designers and sound engineers.

    Switchable bridge or parallel mono modes
    Switchable high and low pass filters
    Configurable as a quad, stereo or 2.1 system
    Fully balanced audio signal path
    Full audio and power protection with peak limiter

    Output : rms @ 4 Ohms 4 x 350W
    Output : rms @ 8 Ohms 4 x 200W
    Bridge power @ 8 Ohms 2 x 700W (both pairs of channels bridged)
    Weight 5.083kg
    Power supply 220-240Vac, 50/60Hz (IEC)
    Modes 2 x Stereo, Parallel (mono), Bridge (mono)
    Input sensitivity 0dB = 0.775Vrms
    Crossover Input A 120Hz LPF and C+D 120Hz HPF (all switchable)
    Input connections 4 x XLR female
    Sound output 4 x SPK connectors
    Dimensions 482 x 248 x 44mm (without feet)