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Sales: pickups and amplification - pickups and preamps - bass pickups

I'm a great fan of acoustic instrument pickups and preamps. Since 1984, K&K Sound has manufactured top-quality pickups, microphones, and preamps for a wide range of instruments, including acoustic guitar, archtop/jazz guitar, resonator guitar, upright/double bass, banjo, mandolin, saxophone, flute, piano, harp, violin, cello, accordion, harmonica, and more. K&K has won many awards for its products, and regularly receives favourable comments in the guitar forums and other media.

I keep most of the more popular models in stock, and the complete range is available to special order. Special order items can be ordered using the 'Add to Basket - Special Order' buttons - please allow about 15 working days for delivery.

I am also happy to fit your pickups if you prefer to acquire them directly.

Please feel free to contact me if you're looking for something special!

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  Bass Max

Double Big Twin

Bass Master Pro

Bass Master Rockabilly

Golden Bullet URB

Golden Trinity Upgrade System

Golden Trinity Bass Max System

Golden Trinity Double Big Twin System

Pure Bass/Tenor/Cittern (acoustic 4-string)

Pure Bass/Tenor/Cittern (acoustic 5-string)

Bass Max

The Bass Max is a double bass transducer with sandwich design for "quick wedge-mount" in one bridge wing. Its sandwich design features a layered construction of two piezo crystals, one facing up and one down. This ensures an even transmission from the strings and from the body of the bridge with all its frequencies.

The Bass Max is located vertically to the vibrations and therefore transmits at a high volume. K&K recommend the Bass Max for musicians playing both arco and pizzicato styles, as it transmits a broader mid frequency range. This enables the musician to change his playing modes without having to adjust the amplifier. The connection jack is held in place by a special attachment clamp mounted at the A and D strings between string-holder and bridge.

One Bass Max will evenly pick up the tone range of the double bass. A big plus is the Bass Max's superb compatibility with smaller bass combo amps.

The Bass Max has these impressive features:

* Mechanical stability and sturdiness
* High output signal
* Balanced transmission over the whole tone range with just one Bass Max
* Rich harmony in reproduction of both arco and pizzicato
* Mantled cable eliminates disturbance

Technical Information
Diameter: 22 mm
Thickness: 5 mm
Output impedance: high ohmic
Output: 1/4"
Connection cable length: 6"



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KK&K Bass Max

KK&K Bass Max

Double Big Twin

The Double Big Twin is a four-headed double bass transducer developed specifically for jazz bass players. It harmonizes very well with jazz bass, because its transmission band includes very high and very low frequencies. The high frequency translation ensures a clean amplification of the finger attack with the picked bass. The low frequency translation refers to a desired very bassy sound picture.

Each string of the double bass is picked up separately with the Double Big Twin. This results in an extraordinary balance of sound to accommodate even the pizzicato playing mode. Double Big Twin is easily mounted with the supplied double-sided adhesive film and doesn't require modification of the instrument itself. This adhesive film has been selected carefully because it proved to have excellent qualities for sound transmission. The connection jack is held in a special attachment clamp to be mounted at the A and D strings between string-holder and bridge. One of the K&K preamps is highly recommended for impedance adaptation and pre-amplification.

Technical Information
Diameter of each transducer head: 3/4"
Height of each transducer head: 1/32"
Output impedance: high ohmic
Length of connection cable: 1 ft
Output: Stereo 1/4" jack, soldered mono mode



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K&K Double Big Twin

K&K Double Big Twin

Bass Master Pro

The Bass Master Pro is a very sophisticated transducer system for the upright bass. It consists of three components: The Double Big Twin bridge surface mount transducer, one Bass Max wing mount transducer, and a very powerful dual-channel preamp with excellent features.

The Double Big Twin pickup is designed to transmit a harmonized jazz bass sound with a lot of very low and high frequencies. The high frequency response ensures a clean amplification of the finger pick sound. The low frequency transmission produces the desired very low bassy sound picture.

The Bass Max wing mount transducer transmits more midrange, which adds power and definition to the sound. When playing arco, we recommend using only the wing transducer. It is also compatible with small combo amps.

The dual-channel preamp is a belt clip unit that features two volume controls, a stereo input, and a line level output on the outside of the box. Inside the box are adjustable controls for gain, bass, and treble for each channel. The tone controls offer an incredible +/- 20 dB. This is a wider range than some big boards on the market today! To keep the box as small as possible these controls are trim pots (small potentiometers for adjustment with a precision screw driver which is supplied). Once you install the pickups, you can adjust the two channels with these trim pots to your personal preference and needs. While performing, the two volume knobs on the outside allow for quick adjustments.

Bass Master Pro System

Bass Master Pro Solo
pickup system without preamp and lead
for installing on a second instrument

Bass Master Pro
Preamp only


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K&K Bass Master Pro

K&K Bass Master Pro

Bass Master Rockabilly

The Bass Master Rockabilly is the first double bass transducer system designed specifically for Rockabilly and Slap Bass. It combines two transducers (the Bass Max and a fingerboard pickup) to create an integrated double bass pickup system that brings out the percussive and subtle fingerboard sounds, as well as strong and warm bass tones. Each Bass Master Rockabilly can be fine-tuned via the separate bass and treble controls within the dual channel preamp, providing an infinite range of combinations for every player and any style of play.

The first component, the popular Bass Max, is positioned in the bridge wing. To make the Bass Max, combine two transducers into a "sandwich" in order to maximize and enhance vibrations captured from the entire bridge. Only one Bass Max is necessary to provide an even signal from all four (or five) of the double bass' strings. Its strong midrange signal is ideal for cutting through the mix in loud Rockabilly situations, or providing a warm and supportive line for country bluegrass.

The fingerboard transducer's unique size and shape allows it to be precisely placed on your instrument. The preamp lets the player blend in just the right amount of slap, growl, and other fingerboard sounds to reach their audience. This allows the player to achieve the exact sound they desire.

The dual-channel preamp has internal gain, bass, and treble trim pots for each pickup, allowing impressive +/- 20dB tonal adjustments. External volume controls let you balance the volumes of the bridge and fingerboard transducers on the fly. A convenient belt clip is included with this compact preamplifier, which weighs a mere ten ounces with the battery installed. A six foot, high quality three conductor (1/4 inch stereo) cable is included to complete the package.

Technical Information
Wing: 22 mm diameter, 4 mm thick
Fingerboard: 12.5 x 10mm, 0.7 mm thick
Preamp: 3" x 3.5" x 1" Input
Impedance: 1 MegOhm (each channel)
Output Impedance: 10K Ohms
Input: Stereo 1/4" | Output: Mono 1/4 "
Cable: 6 foot, 1/4" stereo plugs
Power: 9 volt battery (not included)

Bass Master Rockabilly System

Rockabilly Solo
pickup system without preamp and lead
for installing on a second instrument

Rockabilly Preamp only

Rockabilly Fingerboard Pickup only


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K&K Bass Master RB Plus for Rockabilly Bass

Golden Bullet URB

The Golden Bullet URB is a condenser mic chosen specifically for its characteristics and performance with the double bass. This is not an "off-the-shelf" microphone, but one designed and custom built by K&K in Oregon. This unit combines great sound with excellent feedback resistance. It is unidirectional to help avoid rumble and undesirable bleed from other instruments.

Amazingly light and small, it is mounted on your bridge using self adhesive 3M Dual Lock fastener and positioned using its built-in six-inch gooseneck. And don't worry about undesirable effects due to the bridge mounting - the complete unit weighs only about 0.25 ounces!

The Golden Bullet URB includes:

* Mic with 2 feet of wire, high quality 1/4" jack and a special string-mountable jack clip (clamps between A and D string between bridge and tailpiece).

* Preamp with a 1/4" input jack and XLR balanced output. This is the standard preamp that can be powered by a 9 volt battery or 12-48 volt phantom power. The preamp also provides the special 5-volt power the mic requires.

* On special request, a 1/4" line out preamp model is available (9-volt battery only).


special order

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K&K Golden Bullet URB

K&K Golden Bullet URB

Golden Trinity Upgrade System

K&K's various bass transducers are wonderful, and can deliver a exceptionally warm and natural double bass sound -- but there are times when a microphone can add extra warmth and life to your signal, or perhaps be the total true voice of your bass. Choosing and using a microphone can be a real challenge and an expensive proposition, especially when you want to blend it with your current rig. Sound has taken all the hassle out of the process by creating the perfect and most convenient systems that can work for you immediately - right out of the box.

Several different combinations of the Golden Bullet URB and 's popular upright bass pickups are available. The different Golden Trinity Combinations offer you a great deal of flexibility for reproducing the natural sound of your bass.

If you already have an existing pickup, K&K recommend the Golden Trinity Upgrade System.

It includes:

* Golden Bullet URB mic
* String-mounted stereo jack with additional 1/4" input for existing pickup (pre-wired to mic)
* 6'3" conductor cable
* Dual-channel preamp

It is easy to install and operate and integrates virtually any pickup. A single wire leads from the Golden Bullet URB to a three-conductor (TRS, stereo) string-mounted jack. Also coming from that jack is a 12 inch lead with a standard 1/4" phone plug, ready to be plugged into your pickup's output jack. A TRS cable is supplied, which carries the distinct mic and pickup signals to the dual-channel preamp for mixing (see picture).

There are two 1/4" output jacks, one which carries the mixed output (mic plus pickup -- active if only one output cable is connected), and a second which carries the mic signal alone (active if both outputs are connected, in this case the mixed out carries only the pickup). This tiny 10 ounce 3 x 3 1/2 x 1 3/8 inch dual-channel preamp provides power to the mic and gives you complete control over the volume, gain, and EQ for each channel. The mic channel has internal bass, treble and gain trimmers The pickup channel has internal bass, mid, treble, and gain trimmers. The gain trimmers allow for balancing any pickup with the microphone and the external volume controls letting you easily balance the two channels on the fly.


special order

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K&K Golden Trinity Upgrade System

Golden Trinity Bass Max System

Golden Trinity Bass Max System includes:

* Golden Bullet URB mic
* String-mounted stereo jack with additional 1/4" input for existing pickup (pre-wired to mic)
* Integrated Bass Max wing-slot pickup
* 6'3" conductor stereo cable
* Dual-channel preamp


special order

K&K Golden Trinity Bass Max System

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Golden Trinity Double Big Twin System Golden Trinity Double Big Twin System includes:

* Golden Bullet URB mic
* String-mounted stereo jack with additional 1/4" input for existing pickup (pre-wired to mic)
* Double Big Twin - four transducer pickup array
* 6'3" conductor stereo cable
* Dual-channel preamp


special order

K&K Golden Trinity Doublle Big Twin System

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Pure Bass/Tenor/Cittern (acoustic 4-string)

This Pure Bass/Tenor/Cittern pickup is designed for 4-string acoustic basses, tenor guitars and citterns. It amplifies with a warm, natural, and woody tone and delivers the same great performance you have come to expect from a Pure pickup.

This is technically the same as the Pure Archtop model, and can also be used on archtop guitars if you need an internal pickup. (On an archtop, the transducers are mounted just inside the f holes.)



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K&K Pure Bass/Tenor (acoustic 4-string)

K&K Pure Bass/Tenor (acoustic 4-string)

Pure Bass/Tenor/Cittern (acoustic 5-string)

This Pure Bass/Tenor/Cittern pickup is designed for 5-string or 5-course acoustic basses, tenor guitars, citterns and similar instruments. It amplifies with a warm, natural, and woody tone and delivers the same great performance you have come to expect from a Pure pickup.



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K&K Pure Bass/Tenor (acoustic 5-string)

K&K Pure Bass/Tenor (acoustic 5-string)