This item is usually Drop Shipped from the MFR/Distributor within 7-10 days (subject to availability). Your order will be charged at the time of placing the order with the vendor. Item is non-cancelable or returnable.
From the ATI-Audio NANOAMP Series, the SUM100 is a stereo to mono summing amplifier with balanced XLR 3-pin input and output connectors. In many cases, amplifiers, preamplifiers and analog mixers are able to provide stereo output but are incapable of summing stereo signals to mono. Mono signal feeds are required for certain wireless transmission as well as other applications relative to sound reinforcement and recording.
The inputs provide a balanced 40K ohm bridging impedance for line levels up to +24dBm. The high input impedance allows the input to also bridge -10dBu (hi-fi, RCA plug) lines without loading. Font panel, screwdriver potentiometers provide independent input trim controls and full range master gain control. 28dB gain maximum with input and output controls fully clockwise.
| Connectors | XLR (Balanced input/outputs) |
| Input Impedance | Balanced, 40k Ohm bridging |
| Output Impedance | Balanced, 40 Ohms Maximum Zs |
| Nominal Output Level | +4dBu in, +22dBm Out to 600 ohm balanced load |
| Peak Level | +22dBu in, +22dBm out to 600 ohm balanced load |
| Frequency Response | +/- .25dB, 20 to 20,000 Hz |
| Crosstalk | 70dB Minimum at 10kHz |
| Signal-to-Noise Ratio | -90dBm maximum output (20kHz B.W.) |
| Total Harmonic Distortion (THD) |
.02% Max.at Peak Level
.005% Max. at Nominal Level 20Hz to 20kHz |
| Power | 24VDC @ .07A, connector sleeve is positive |
| Dimensions | 1.5 x 5.5 x 5.75" (38.1 x 139.70 x 146.05mm) (HxWxD) |
| Weight | 1.5 lb (24 oz) |