Number of individual inputs   2
Number of individual outputs   2
THD at 1 kHz at 4 ohms and -3 dB   < 0.03 %
Frequency response 20 Hz to 20 kHz at 8 ohms at -15 dB   + / – 0.5 dB (typically + / – 0.05 dB)
Damping factor at 8 ohms, 100 Hz   > 1000, typically 1500 comprising the SpeakON® connectors, typ. 5 mOhms
Latency without DSP or bypass (connector to connector)   0.000 ms, ZeroLatency™ technology
Signal limiter   Yes
Current monitoring   Yes
LF limiter   Yes, reduces the gain gently
HF limiter   Yes, reduces the gain gently
AC mains supply monitoring /
Power management
Rearmounted gain factor toggle switch   26 dB and 32 dB basic gain
Frontmounted rotary gain controls   0 dB to – 100 dB, digitally controlled
Rearmounted bridge mode switch   Channel 1 and 2: Yes
AC mains supply input   1 x Neutrik® PowerCON®
Analogue input and slave connectors   2 x 3-pin Neutrik® full metal socket and 2 x 3-pin Neutrik® full metal plug
Amplifier output connectors   2 x 4-pin high current Neutrik® SpeakON®
Resolution ADC input   24 bit
Sampling frequency ADC input   96 kHz default, optionally 48 kHz and 192 kHz (selectable via DSPSoftEngine™)
Latency with active DSP (connector to connector)   0.2 ms at 96 kHz sampling frequency, QuasiAnalog™ technology
DSP delay
  0 ms to 340 ms (115 m) in total per channel pair at 96 kHz
DSP memory locations
DSP RMS limiter   Yes, TrueRMS, optionally with ForecastLimiter™ by DSPSoftEngine™
DSP Peak limiter   Yes, optionally with ForecastLimiter™ by DSPSoftEngine™
Hoellstern® DSPSoftEngine™   Yes, comprehensive basic setups, expandable as desired
Remote control network   Yes, D-Sub 9 socket, RS-485 network, RS-232 point-to-point, Hoellstern® protocol
Frontside status LEDs display   Standby, Signal Input, VU -6 dB, VU -3 dB , VU 0 dB and Signal Limit
Frontside error LEDs display   Current, HF / LF Limiter, Temperature
Frontside rotary controls   One rotary step control with digital sensing per channel
Frontside switches   Standby / ON switch, software-controlled
AC mains input   180 VAC to 265 VAC, operative from 70 VAC, 400 V tolerant
Starting current   10 A softstart
Intelligent AC mains power management   Yes, iCVP® technology, dual hard-regulated switching power supply
Efficiency   Up to 84 % (AC mains input to audio output)
AC mains fusing   16 A (class B breaker), for personal alarm systems class C circuit breaker or better
Housing construction   Black powder-coated steel body , anodised aluminium front panel
Handles and 19″ rack ears   Yes, anodised aluminium, replaceable
Air filter and grids   Open-pore foam, spring steel grids, black powder-coated, vacuum-cleanable
Air rate and fans   2 fans, temperature-controlled speed, front sucking
Dimensions   Width: 19″ (483 mm), height: 2 RU (88 mm), overall depth: 290 mm from rack ears
Weight   10 kg (22 lbs), shipping weight 12 kg (26 lbs)