Fractal Audio FX8 - Unity Gain FAQ

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15 : ADDITIONAL TOPICS
UNITY GAIN FAQ
:Q What does “unity gain” mean?
:A Unity gain means that the level at a device’s output is the same
as the level at its input, with no change in gain.
:Q Why do I care that the FX8 is designed for unity gain?
:A The FX8 makes it EASY to achieve unity gain. This can be important because amplier
tone, distortion amount, dynamics and noise are level dependent. With unity gain:
 The level of the signal from your guitar output can reach your amp input without being altered.
Therefore, your guitar-amp interaction sounds and feels the same, oering a transparent playing
experience while using the FX8.
 The level of your FX SEND can reach your FX return without being altered. The entire system can
therefore perform optimally, without unpredictable changes to level, dynamics or noise when you
engage True Bypass or bypass all post eects.
:Q How do I set up the FX8 for unity gain?
:A You don’t need to! Just set up according the basic instructions in Section 3.
A default empty preset should sound have the same level as True Bypass Mode.
:Q What might I do to inadvertently upset unity gain?
:A Many SETUP and EFFECT parameters change the gain level. Some of these are intended to change
gain levels (how else is a boost supposed to work, after all?) Here is a short list of things to consider:
 The LEVEL parameter of every eect increases or decreases the overall level.
 Changing MIX on certain eects changes both dry and wet levels. This is to prevent signals from “stacking up”
and causing clipping. You can compensate with your ears by turning eects on and o and comparing the level
with True Bypass engaged.
 If you’re going to change a block’s BYPASS MODE from the default setting of THRU, it is best to check its levels
when you engage/disengage the eect BEFORE you switch to something like MUTE FX IN.
 The level parameters on the OUTPUT page of the main mode menu increase or decrease overall levels.
 Incorrect settings on the I/O: AUDIO page can result in gain changes.
 The NOISE GATE has a level control.
 If your rig is MONO, every BALANCE or PAN control can aect levels.
 The Global Graphic EQs aect overall level.
 The I/O LEVEL page settings DO NOT aect unity gain. Each setting is compensated internally.
 See also “Advanced Level Parameters” on page 73, which contains several tips about levels and gain.
:Q Any last words of advice?
:A Use the TRUE BYPASS switch as a way to make sure your presets and scenes are on track.
In general, it is better to be in control of your levels than to be xated on the “concept” of
unity gain. Do what sounds best to you and learn as much as you can about your gear.