AER Pocket Tools Dual Mix The dual mix is a high-quality „two-channel“ preamplifier for instrument/line or microphone signals. The unit offers simple, efficient features just like a small mixing console: two inputs, each for one microphone or instrument and line-level signal with switchable 24V-phantom-power. Separate active two-band EQ networks for each input. A 4-preset multi-effects-unit with two reverbs, one echo and one chorus. A stereo aux-in, line-out and DI-out, plus a stereo-headphone-preamplifier.