How to solve echo/phasing issues on Apollo 8?
- TTimothy ThompsonSep 12, 2025
To resolve undesirable echo or phasing issues with your Apollo Other, ensure that input monitoring is not enabled in both Console and your DAW (Digital Audio Workstation).

How to solve echo/phasing issues on Apollo 8?
To resolve undesirable echo or phasing issues with your Apollo Other, ensure that input monitoring is not enabled in both Console and your DAW (Digital Audio Workstation).
How to reset Apollo 8 Other?
To perform a hardware reset on Apollo 8, follow these steps: 1. Power off Apollo. 2. Press and hold the PREAMP, LOW CUT, and POLARITY controls. 3. Power on Apollo 8 while continuing to hold all three controls. 4. After all front panel LEDs flash rapidly (after several seconds), release the controls.
| Mission Type | Manned Lunar Orbit |
|---|---|
| Launch Date | December 21, 1968 |
| Launch Vehicle | Saturn V |
| Crew Size | 3 |
| Crew Members | Frank Borman, James Lovell, William Anders |
| Duration | 6 days, 3 hours, 0 minutes, 42 seconds |
| Orbits Around Moon | 10 |
| Landing Date | December 27, 1968 |
| Perigee | 111.1 km (69.0 mi) |
Details about Apollo 8 as a Thunderbolt Audio Interface with UAD-2 Processing.
Explains improvements in A/D and D/A conversion for better audio quality.
Discusses using UAD plug-ins for analog tone and color with low latency.
Lists the main selling points and capabilities of the Apollo 8.
Details the input/output specifications and channel counts.
Describes the four mic preamps and their features like Unison.
Details monitor outputs, headphone outputs, and controls.
Explains the DSP capabilities (DUO/QUAD) and plug-in bundle.
Covers Console application, Console Recall, and UAD Meter.
Explains the different PDF manuals available for Apollo 8.
Explains manuals for UAD-2 functionality and plug-ins.
Explains methods to access the installed documentation files.
Information on online resources like UA Support Videos and Apollo Support Page.
Provides contact methods for customer support.
Describes the high-impedance JFET direct inputs for instruments.
Explains how Hi-Z inputs interact with Mic/Line inputs.
Details the functions of the rotary encoder for gain and channel selection.
Explains bypassing the preamp for line inputs for a pure signal path.
Describes the illuminated ring indicating preamp gain level and state.
Explains how to use Unison plug-ins with the preamp controls.
Explains the color coding of the preamp indicator ring.
Covers switches for Mic/Line, Low Cut, Phantom Power, etc.
Details Pad, Polarity, and Stereo Link functions for inputs.
Describes signal type indicators and channel selection feedback.
Details the 10-segment LED meters for input/output signal levels.
Explains the status of the Thunderbolt connection indicator.
Details indicators for clock source and meter states.
Details indicators for the current sample rate.
Describes meters for Left & Right Monitor outputs.
Controls for metering and alternate monitor selection.
An assignable switch for monitoring functions like ALT, MONO, DIM.
Controls monitor output level and mutes the outputs.
Bypasses monitor level circuitry for a fixed reference level.
Mutes the main and ALT monitor outputs.
Indicates monitor output level and state (active, muted, etc.).
Controls headphone volume and describes output jacks.
The main power switch for the Apollo 8.
Details the connection for the external power supply.
Describes the ADAT Lightpipe ports for digital audio I/O.
Details the Word Clock input and output BNC connectors.
Describes the S/PDIF digital I/O ports for audio connections.
Explains the two Thunderbolt 2 ports for computer connectivity.
Details the balanced line-level analog outputs.
Explains alternate monitoring outputs.
Describes the main monitor outputs for speakers.
Details additional line-level analog inputs.
Describes the combo jacks for microphone and line inputs.
Lists the necessary system requirements for Apollo 8.
Provides instructions for setup and product authorization.
Overview of the Console software interface and functions.
Provides advice for physical installation and rack mounting.
Details on connecting the Apollo 8 via Thunderbolt.
Illustrates a simple Apollo 8 setup configuration.
Illustrates a common Apollo 8 setup configuration.
Illustrates a complex Apollo 8 setup with digital I/O.
Lists the necessary cables for multi-unit Apollo configurations.
Provides guidance on connecting multiple Apollo units.
Lists system-level specifications like I/O complement.
Covers sample rates, bit depth, and conversion performance.
Provides detailed specifications for analog inputs and outputs.
Details specifications for various analog inputs and outputs.
Provides specifications for the stereo headphone outputs.
Details specifications for digital interfaces and synchronization.
Covers power supply, consumption, dimensions, and weight.
A visual representation of the Apollo 8's internal signal flow.
Lists common issues and their corresponding troubleshooting steps.
Explains LED behavior and provides a hardware reset procedure.
Details crucial safety precautions for operating the unit.
Provides guidance on unit maintenance and repair services.
Information about product warranty and FCC compliance.
Contains legal notices regarding the manual and product trademarks.
Refers to the software's End User License Agreement terms.
States the copyright information for the manual and associated materials.