The new MCA4A with USB 3 interface offers all MCA4 capabilities and has in addition a digital pole-zero filter and trapezoidal pulse shaper that enables processing of positive and negative preamplifier signals. Optional eight 125 MHz scaler/counters with 48 bit, two are presettable. The external clock input enables synchronizing several MCA4A's to expand the number of coincident channels or in MCS mode synchronizing to the experiment. Extra RTC clock reset input can be set by software to reset the clock of one or more channels to enable time spectra with respect to an external trigger signal. In addition to the standard 0...+10V / ±5V range, other ranges of 8V, 2.5 V and 2V are settable by jumpers, all can be set by software to positive / negative unipolar or positive / negative bipolar. Beside some more improvements, the USB 3 interface increases the maximum throughput by a factor of 4 compared with USB 2.0. In MCS mode the thresholds for Start, Stop1, Stop2 and Channel Advance can be set individually to any value between -2 V and +2 V.