Grace Design FELIX, Alix, Bix bass pre-amp for acoustic, upright pedals bass, guitar:: For sale, on offer, UK, EU at Bass Direct: Warwick EU, USA, Birmingham, Manchester, London



Felix Preamp Pedal Silver £1050 free UK mainland shipping

Felix Preamp Pedal Black £1050 free UK mainland shipping

Alix Preamp Pedal £717.80 free UK mainland shipping

Bix Preamp Pedal £399 free UK mainland shipping

Add £20 EU shipping for outside UK

Studio Quality 2 Channel Instrument & Mic Preamplifier / DI / EQ

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 pre-amplification 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.

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

"Congrats on making a great box. I've been hoping for something of this caliber for years and years. It renders my pedal board of the last several years obsolete and useless. It's easy to use and sounds like I'd hoped. Bottom line - this is the best preamp I've ever used." - Bryan Sutton, six time winner of the IBMA's Guitarist of the Year.

“Man, FELiX sounds great! And it really helps because it eliminates another piece of gear for me. Now, I have everything I need in a single unit: the mic preamp for my acoustic bass, great EQ, and flexible I/O. It works great for my electric bass too. Home-run! Killer!" - John Patitucci - Chick Corea, Herbie Hancock, Wayne Shorter, Stan Getz, Wynton Marsalis, Joshua Redman.

Gig bag

Hard case

Bix Preamp

Baby Makes Three.

In a few short years, FELiX and AliX have become the preamps of choice for discerning touring and recording musicians. From Banjo to bass players, they enable performers to perfect their stage and studio sound beyond what was previously possible.

And now directly from this lineage comes BiX, which shares the exact same DNA of its bigger siblings, but with an intelligently streamlined feature set and a price that puts it in reach of any performer, whether on their way to the local coffee shop or the megadome.

Controls are dead simple – input gain, high and low shelving EQ, and a 10dB variable boost circuit, with footswitches for mute and boost. I/O includes the instrument input, separate send and return insert jacks, an unbalanced line output, and a balanced ISO DI output on XLR. For enhanced EQ control, rear panel DIP switches select between two different transition frequencies for both High and Low controls. And BiX is pedalboard friendly, with a 9VDC power input and a compact, rugged low-profile chassis.

Sonically, BiX is a carbon copy of its bigger siblings, with crystal clear, ultra-quiet audio performance. A better than 30VDC internal operating voltage provides for incredible headroom. The highs are smooth and open, and the lows are deep and rock solid. The dynamics and tone of the instrument come alive with clarity and realism, which translates to creating a deeper bond between you and your instrument.

1/4" high impedance input

Separate FX send and return

1/4" unbalanced line output

Balanced XLR DI transformer iso output

10dB variable boost

Mute and Boost footswitches

High and Low shelving EQ

Selectable EQ transition frequencies

9VDC operation

Over 30V internal operating voltage

Pedalboard friendly design

5 year transferable warranty

Made in the USA

BiX Owner's Manual Rev B



Line Output - 0dB to +37dB

DI Output, Level: Line - -29dB to +8dB

Boost - 0dB to +12dB

THD+N 22Hz-22kHz BW - 1kHz @ 0dB Gain +10dBu out    < 0.002%

1kHz @ 20dB Gain +10dBu out   < 0.002%

1kHz @ 36dB Gain +10dBu out   < 0.005%

INTERMODULATION DISTORTION - SMPTE/DIN 4:1 7kHz/50Hz  @ 36dB Gain +10dBu out

< 0.008%


Line output @ 20dB Gain -3dB - 10Hz - 185kHz

DI output @ - 10Hz - 40kHz


Instrument Input - 10MΩ / 1M Ω with TRS input cable, tip and ring shorted

Insert Input - 200kΩ

Insert Output - 150Ω

Line Output - 150Ω

DI Output - 150Ω


Green threshold  -13dBu

Red threshold  +12dBu


Instrument Input  +22dBu

Insert Return (0dB Boost)  +22dBu

MAXIMUM OUTPUT LEVEL - 100k Ohm load, 0.1% THD

Line Output  +22dBu

DI Output (Mic)  -7dBu

Insert Output  +22dBu


Gain  +/-15dB

Low Frequency (Low Range)  100Hz

Low Frequency (High Range)  200Hz

High Frequency (Low Range)  2kHz

High Frequency (High Range)  4kHz


Minimum Gain, Line Out  129dB

Minimum Gain, DI Out  129dB


Minimum Gain, Line Out  -107dBu

Minimum Gain, DI Output  < -120dBu

Maximum Gain, Line Out  -78dBu

Maximum Gain, DI Out  -106dBu


Connector  2.1mm Center Negative

Nominal Input Voltage  9VDC

Nominal Input Current  150mA

Input Voltage Range  6VDC - 12VDC

WEIGHT and DIMENSIONS  1.2lbs (0.55kg)

H2.5" x W5.1" x D4.5" (H6.35cm x W13.0cm x D11.4cm)


Tel: 01926 886433