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Fernandes Sustainer FSK-101 Humbucker Pickup Kit Black

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#300421 000001000
Product Price $249.0
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The Fernandes FSK-101 Sustainer Humbucker Pickup Kit delivers the power of infinite sustain in any guitar with a neck humbucking pickup configuration...Click To Read More About This Product

Available 05-07-2018

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Produce Hendrix-like textures and tonal colorings at any volume level with your guitar.

The Fernandes FSK-101 Sustainer Humbucker Pickup Kit delivers the power of infinite sustain in any guitar with a neck humbucking pickup configuration. This pickup set gives you everything you need to easily install this amazing tone-sustaining system into your instrument.

What is the Fernandes Sustainer?
The Fernandes Sustainer is a specially designed electronic system for electric guitar that creates controllable sustain of any single or group of notes in the instrument's sound range. This means that the string(s) will ring at constant intensity indefinitely until stopped, regardless of output and location, even if your electric guitar is not connected to an amplifier.

What Can the Fernandes Sustainer do for you?
Bring your creativity to new levels by using the Sustainer with any combination of music gear in your arsenal of effects, amp modelers, and home recording equipment. Discover new sounds exploring the world of controlled sustain and feedback. How do you get natural sustain using digital effects? The Fernandes Sustainer is the way!

How does it work?
The patented Fernandes Sustainer system generates a magnetic field causing the strings of the guitar to vibrate. Powered by a 9-volt battery, the interaction of the bridge humbucking guitar pickup, the Sustainer Circuit Board and the neck Sustainer Driver pickup, projects magnetic pulses that continuously vibrate the strings of the guitar, the same way an amplifier at extreme volume would do, yet totally controlled. The result is infinite sustain and/or feedback using sparkly clean or loud distorted settings without the need for excessive volume or extra outboard gear.

  • The Fernandes FSK-101 Sustainer Guitar Pickup Kit includes:
  • Humbucker Sustainer Driver Pickup
  • PC Board
  • Easy Access Battery Box
  • Battery Connecter
  • Stereo Jack
  • Wires and Clips
  • Screws
  • 9V Alkaline Battery
  • Installation Manual

Explore new sonic territories today with this amazing pickup!


Review Snapshot

by PowerReviews
FernandesSustainer FSK-101 Humbucker Pickup Kit

(based on 4 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 4 customers

Displaying reviews 1-4

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(41 of 44 customers found this review helpful)


Great Device - Poor Customer Support

By JR Emmett

from Texas (smile when ya say that)!

See all my reviews

Comments about Fernandes Sustainer FSK-101 Humbucker Pickup Kit:

Lives up to advertised features and works well, when set up correctly.

However, the real achilles heal is the lack of customer support. Sent one eMail - receive a terse answer that didn't make sense (to myself and another Electrical Engineer with quite a few years of experience between us). Two follow up emails went unanswered (highly unprofessional). No phone support available. In the end, it worked out after patient and careful experimentation - which should not be necessary for the price the device commands. Plain and simple - customer support is nearly non-existent. Expecting the guitar technician to take financial responsibility for the results of determining correct signal flow (a signal flow diagram and/or thorough explantion of each I/O signal would be nice) is unacceptable.

If you plan to install this - either stick to the two published wiring digrams or prepare for some time consuming experimentation and bench work.
Repaired an exusting (not working) installation for a customer. Does precisely what it is advertised to do and he is very happy with it.

Pain in the neck to install. Connectors for wiring should be on the other side of the board, or the switches mounted on flying leads as the connector side of the board faces the mounting surface.

Setup takes patience to get correct sustainer response without feedback. Best to have access to back side of the board (where the 4 adjustments pots are located) without having to remove strings, etc. Setting pickup height is critical (start with recommended height - tweak from there).

Having the ability to access both modes of the device with a flick of the switch is great.

Spacing between toggles is excessive and the size of the module is pretty large (IMO). You will be removing a substantial amount of wood from the guitar body and need to choose the location carefully to avoid structural issues.

One should note that the Sustainer module controls all signal flow from the pickups. With the sustainer off - pickup signals are passed through to the normal controls. In sustainer mode, the module bypasses the selector switch. Adding features (such as coil taps) has to be carefully thought out (see comments on customer support below).
Quality of connectors and adjustment Pots are good. Board is well constructed. Solder quality is excellent.

That being said, the design is outdated. Full of through hole, axial components that the rest of the electronic industry stopped using in the late 1980's. Size of circuit could be significantly reduced (more than 2X) with update to modern SMT components. Although I recognize the hesitation of the manufacturer to make changes to a working analog circuit design, Fernandes should consider an update if, for no other reason, to reduce the amount of surgery required on a guitar.
The device is relatively expensive but, if you are after infinite sustain - this is a pretty good way to accomplish that goal that produces remarkably good results when setup properly.

(23 of 27 customers found this review helpful)


Terrible Technical Support

By pepethehepe

from Undisclosed

Comments about Fernandes Sustainer FSK-101 Humbucker Pickup Kit:

I had this installed on my Ibanez RG350 by a professional technician. This product is the upgrade you can ever put on your axe, the big problem is the lack of technical support. First off, there was a missing wiring clip when they sent me the sustainer. There's no phone number for Fernandes technical support, just an email address. Then it will take about two to three weeks before they respond. When finally I got the right part, now I am having noise issue with my guitar. Tried to contact technical support several times but no response until today. I'm afraid my guitar has gone to waste. I wont recommend this to anybody.

(9 of 10 customers found this review helpful)


A Must For Lead Guitarists

By Ruben The Cuban

from Miami Beach, Fl

About Me Experienced


  • Easy To Use
  • Functional
  • Good Quality
  • Improves Sound


    Best Uses

      Comments about Fernandes Sustainer FSK-101 Humbucker Pickup Kit:

      I've owned one since 2001. I can't speak for the customer support from Fernandes but I can tell you this is the MOST underrated contraption for a lead guitarist. More than a conglomeration of floor pedals. Unless you can crank your amp full tilt you can't reproduce what this does. It provides infinite sustain and it has a micro switch to go into harmonics. You can control how soon it does so with the tone knob when you invoke the sustainer. The micro switch has 3 positions: sustainer off, blend, and harmonics. I wanted to buy another one but I could not get a hold of one around 7 years ago and purchased a sustaniac. I had it professionally installed by the owner and it never really compared to the Fernandes.

      If you are a lead guitarist you want this, more than any pickup. Why? Because you can use this on any amp at any volume. The only down side is that it will go through a 9 volt battery within hours if you have it on. I've created a 9 volt AC adapter when I use it, a slight inconvenience. If you like pinch harmonics that will EXPLODE and sustain forever ala Brian May you WANT THIS! Yes it will also do the Van Halen stuff.

      I hope this helps someone who is on the fence. It shouldn't be too hard to install but if you are not proficient make sure you have someone in mind that can before buying.

      (3 of 3 customers found this review helpful)


      Horrible Horrible!!! Waste of Money and Time!!!

      By Pro Guitar

      from CA

      About Me Professional Musician

      Verified Buyer



        • Not Functional
        • Poor Quality
        • waste of money
        • waste of time

        Best Uses

          Comments about Fernandes Sustainer FSK-101 Humbucker Pickup Kit:

          I purchased this unit and had it installed at Guitar Center. My guitar was modified and the back was cut out to house this unit. It barely works at all. The sustain is not noticeable ad the harmonics are the same as very faint amp feedback. I spent hours at GC trying to figure out why this unit functions so poorly and GC also agreed that the unit is defective. I spent too much time and money for this.

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