Grace Design FELiX  2 Channel Instrument & Mic Preamplifier
Grace Design FELiX  2 Channel Instrument & Mic Preamplifier
Grace Design FELiX  2 Channel Instrument & Mic Preamplifier
Grace Design FELiX  2 Channel Instrument & Mic Preamplifier
Grace Design FELiX  2 Channel Instrument & Mic Preamplifier
Grace Design FELiX  2 Channel Instrument & Mic Preamplifier

Grace Design FELiX 2 Channel Instrument & Mic Preamplifier

Color: Silver
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Color: Silver

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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.

  • 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

    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%
    @ 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
    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
    Green threshold -10dBu
    Red threshold +10dBu
    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
    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
    MUTE (TIP) Momentary – Normally Open – Switch to GND < 10Ω
    BOOST / TOGGLE (RING) Momentary – Normally Open – Switch to GND < 10Ω
    100-240VAC 50/60Hz 10 Watts Max
    3.2lbs H3.0” x W9.5” x D5.5”
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