User Manual

Apollo Twin MkII Hardware Manual Quick Start 16

Setting Hardware I/O Levels

This section explains how to set input gain levels for the hardware inputs (mic, line, and Hi-Z)

and adjust volume levels for the hardware outputs (monitors and headphones).

Refer to the Top Panel illustration for the control names and numbers mentioned below.

Important: Before proceeding, lower the volume of the monitor speakers and remove

headphones from your ears.

Set Input Gains

1. Select the input channel to be adjusted by pressing the Preamp button (7) until the

Channel Selection Indicator (3) displays the channel (CH1 or CH2).

2. Select the input type (mic or line) by pressing the Input Select button (13-a) until the

Input Type indicator (5) displays the desired input jack* (see note below).

3. Adjust the channel's gain by increasing the Level knob (1) until the input meter for

the channel (4) approaches maximum, but does not reach the red clip LED when the

input signal is present. If the level is too high to avoid clipping (when the red “C” LED

illuminates), enable the pad (13-d).

4. To set the input gain for the other input channel, repeat steps 1 – 3.

Adjust Output Volumes

1. Select the output volume to be adjusted (monitor or headphone) by pressing the Monitor

button (11) until the Monitor Selected (8) or Headphone Selected (10) indicator is lit.

2. Set the volume level by carefully increasing the Level knob (1) until the desired volume

is reached (you may need to adjust the volume of the speaker system).

3. To set the other output volume (monitor or headphone), repeat steps 1 – 2.

Mute (and Unmute) Monitor Outputs

1. Select the Monitor outputs by pressing the Monitor button (11) until the Monitor

Selected (8) indicator is lit.

2. Press the MUTE button (13-l) to mute the monitor outputs. The Monitor Selected

Indicator (8) is red when the monitors are muted. When in MONITOR Mode, the Volume

Level Indicator LEDs (2) are also red.

3. To toggle the monitor mute state, press the MUTE button (13-l) whenever Monitor (8) is

selected.

Notes:

• *The Hi-Z input is automatically selected, overriding the channel 1 Mic and Line inputs,

when a ¼” mono TS (tip-sleeve) plug is connected to the Hi-Z Instrument jack (14) on

the front panel.

• To control both channels simultaneously when a stereo source is connected, press the

Link button (13-f) when an input is selected (3).

• Line outputs 3 & 4 are accessed and controlled via software only (Console or DAW).

• Refer to the Apollo Software Manual to learn how to conﬁgure the audio interface set-

tings, use the Console application and Realtime UAD Processing, and more.