Grace Design FELiX 2 Channel Instrument & Mic Preamplifier Grace Design

FELiX is a studio quality, 2 channel blending acoustic instrument and mic preamp, designed for working musicians, engineers, sound companies or venues looking for the highest quality solution for amplifying stringed instruments. FELiX is built into a roadworthy (beer-resistant) floor unit chassis of anodized aluminum and steel, portable enough to leave the rack at home but bring studio quality to the stage. With the same stunning audio performance and legendary reliability as Grace Design’s pro audio range, FELiX brings open, musical and nuanced preamplification to any performance situation.

A powerful eq section allows simple and intuitive tone shaping for even the most unruly of instruments. Each channel’s variable high pass filter cuts 12dB per octave from 20Hz to 1kHz, and can also be set as a notch filter for chasing down problem feedback or rumble areas. Parametric mid range controls cover from 70Hz all the way to 8KHz. While fixed low and high controls are carefully voiced for musical shading of bass and treble.

Controls are simple and clearly marked on a bright panel, making them easy to read and tweak on a dark stage. Footswitch functions include a mute / tune switch for muting all outputs except the dedicated tuner out, a boost switch which activates a variable boost circuit, and finally, an A/B mode switch for when FELiX is in A/B mode (which simply toggles between the two different channels).

FELiX brings the kitchen sink approach to I/O. Inputs include a 48V XLR mic input and two instrument inputs. Two independent transformer isolated DI outputs can be sourced from either the mix or the individual channel. This allows you to send the front of house a mix or each channel independently. A dedicated, level controlled amplifier output can be sourced from the mix or channel 2. A dedicated tuner output stays active when all the other outputs are muted. A side panel mounted 1/8” mini jack headphone amplifier is there for practicing, private noodling during boring soundchecks, or scrutinizing dubious eq decisions. A TRS insert is included for adding effects, and finally, a remote footswitch jack is included if FELiX is going to spend his life in a rack or up off the floor.

Guitar, bass, fiddle, mandolin, cello, dare we say banjo, that weird 3 string gourd thing – FELiX is your instrument’s new best friend. Flexible, reliable, a good listener and eager to make you sound better, he is also your new best friend.

Features:

Open, musical and detailed instrument and mic preamplification for discerning artists and engineers

2 channel audio path with blend output control

m101 style transimpedance microphone preamplifier, no electrolytic capacitors in the signal path

Ultra precision 0.5% thin film resistors are used in the signal path

Careful power supply design and grounding yield an ultra-quiet signal path and professional level headroom and line driving ability

Fully ground isolated DI outputs with high quality, low distortion, fully shielded transformers

Super rugged 1/4” connectors with heavy duty metal bushings

Powerful, independent EQ on both channels – hi and low shelving and full parametric midrange

Mid frequency control has two ranges 70-880Hz / 670 – 8kHz

20Hz-1kHz sweepable HPF on both channels, can also be set as notch filter

A / B footswitch for multiple instrument configurations or soloing different pickups

Mute/ tune footswitch mutes all outputs except dedicated tuner out

Boost footswitch for variable 10dB level boost (global)

DI outputs sources are configurable – Ch1 (mix or Ch1) Ch2 (mix or Ch2)

Dedicated level controlled stage amp output (configurable as blend or Ch2)

Dedicated tuner out, remains hot when unit is muted

Side panel switches for 48V, phase, mid Hz range select, HPF/notch select, 12V and A/B mode select

12V mic input power available on Ch2

Phase reverse switch for each channel

3 input impedance settings on each channel – Ch1 10K, 1MEG, 10MEG / Ch2 332K, 1MEG, 20MEG accommodating a wide range of pickup types

Aux footswitch jack for accessing switch functions if FELiX is mounted in a rack tray or on top of an amp

Mic stand flange mount screw holes holes for putting FELiX on a mic stand

1/8” headphone jack, active when FELiX is muted

Global TRS effects insert jack

Universal 100-240 AC power supply with standard IEC cable – no wall wart – take FELiX anywhere in the world!

Full 5 year transferable warranty / built for long, happy life on the road

Designed and built by family and friends in Lyons, CO, USA

Specifications:

GAIN RANGE (Input to DI Output)
CH1 Mic input	21-62dB
CH1 Instument input	Low Gain: 3-44dB
	High Gain: 21-62dB
CH2 Instument input	-1.5-36.5dB
Boost	0-9dB
THD+N 1kHz, 22Hz-22kHz BW (MIC Input to DI Output)
@ 20dB Gain +10dBu out	<0.0045%
@ 40dB Gain +10dBu out	<0.0050%
@ 60dB Gain +10dBu out	<0.010%
INTERMODULATION DISTORTION – SMPTE/DIN 4:1 7kHz/50Hz (MIC Input to DI Output)
@ 40dB Gain +10dBu out	<0.05%
NOISE – REFERRED TO INPUT CH1 MIC @60dB Gain 22Hz-22kHz BW
50Ω source	<-128dB
CMRR @60dB Gain
100Hz	>55dB
1kHz	>75dB
10kHz	>75dB
FREQUENCY RESPONSE (Input to DI Output)
Mic input @ 40dB Gain -3dB	20Hz – 65kHz
Inst input @ 20dB Gain -3dB	20Hz – 65kHz
I/O IMPEDANCE
CH1 MIC Input	8.1kΩ
CH1 Inst Input	HI: 10MegΩ
	MED: 1MegΩ
	LOW: 10kΩ
CH2 Inst Input	HI: 20MegΩ
	MED: 1MegΩ
	LOW: 332kΩ
Insert Input	10kΩ
DI Outputs	150Ω
Amp, Tuner, Headphone and Insert Outputs	150Ω
SIGNAL / PEAK LED METER
Green threshold	-10dBu
Red threshold	+10dBu
MAXIMUM INPUT LEVEL
CH1 MIC	0dBu
CH1 Inst	Low Gain: +21dBu
	High Gain: 0dBu
CH2 Inst	+20.5dBu
MAXIMUM OUTPUT LEVEL – 100k Ohm load, 0.1% THD
DI Outputs	Line: +20dBu
	Mic: -6dBu
Amp, Tuner, Headphone and Insert Outputs	+22dBu
High Pass Filter / Notch Filter
High Pass Filter	20Hz – 1kHz @ -12dB/octave
Notch Filter	20Hz – 1kHz, >-35dB, Q>1.0
EQ
Gain	+/- 12dB
Low Frequency	Low Range: 125Hz Shelving
	High Range: 250Hz Shelving
Mid Frequency	Low Range: 70Hz – 880Hz
	High Range: 670Hz – 8kHz
Mid Frequency Q	0.5 – 5
High Frequency	2kHz Shelving
OUTPUT NOISE 22Hz-22kHz BW @ MIN Gain
CH1 MIC Input (50 ohms) to DI Output	<-88dBu
CH1 Inst Input to DI Output	<-88dBu
CH2 Inst Input to DI Output	<-98dBu
EXTERNAL FOOTSWITCH
MUTE (TIP)	Momentary – Normally Open – Switch to GND < 10Ω
BOOST / TOGGLE (RING)	Momentary – Normally Open – Switch to GND < 10Ω
POWER CONSUMPTION
100-240VAC 50/60Hz	10 Watts Max
WEIGHT and DIMENSIONS
3.2lbs	H3.0” x W9.5” x D5.5”