Type: piezoceramic coaxial cable
Mode: active
Preamp: incl.

The pickup sensor is embedded in a coaxial cable of 2 mm diameter and 6 cm length. The Highlander pickup was actually developed for acoustic guitars where it is situated inside the guitarbridge. For the use with a double bass, a small groove is routed in the tailpiece side of the bridge, and the PU is pressed in the groove. The preamps is housed in a little bag of black nylon, which mounts to the tailpiece.
This pickup can be found factory installed in the Fichter Electric Upright Basses.

www.highlanderpickups.com

Type: piezoceramic coaxial cable
Mode: active
Preamp: incl.

The Headway piezo-cable Active Bass Pickups fit into a slot routed under the bridge feet, pressured by Maple plugs, and made to measure to touch the instrument top. Send your fitted bridge to Headway, to have this work done by a luthier.

www.headwaymusicaudio.com

Type: piezoceramic
Mode: passive
Preamp: —

Similar to the Underwood, but the piezo elements are embedded in wood.

available at www.gknauer.de

FWF-MB1

Type: piezo
Mode: passive
preamp: –

double bass passive piezo pickup with low pass filter, passive pickup with a quadruple piezo builded in two single elements, mounts to the bridge wing slots.
It has a tunable low pass filter within the jack plug.

FWF-MB750

Type: piezo + condenser
Mode: active
preamp: incl.

condenser microphone (cardoid pattern) + two piezo sensors, comes with a small preamp with microphone power supply and tone controls (low pass filters)

FWF pickups are entirely hand made in France by engineer Franck Fromy. FWF was founded twenty years ago at Paris. Today Franck Fromy lives and works in central France. No website available.

BP-100
Type: piezoceramic
Mode: passive
Preamp: optional; several preamps (single/dual channnel) available

Two piezo plates are stuck to the top side of the bridge by means of two metal pegs. (Alternatively, the piezo elements can be glued on.)
This pickup is offered since 1979, and has been sold over 75,000 times so far, as Larry Fishman states.

Full Circle Pickup
Type: piezoceramic
Mode: passive
Preamp: optional; several models (single/dual channnel) available

Encased inside an aluminium height adjuster wheel of the bridge, which are very easy to install of you already have adjusters with the same thread in your bridge. The sound can be adjusted by turning the wheel some degrees.

Fishman/Crown microphone
Type: condenser microphone
Mode: active
Preamp: mandatory; several preamps (dual channnel) available

Fishman offers a small microphone from Crown as a supplement to or budled with the BP100. It is attached to the bridge and has a short gooseneck. Both signals can be mixed with a Fishman Blender dual channel preamp.

available at www.kontrabass-atelier.de

BassBalsereit
Type: piezoceramic
Mode: passive or active
Preamp: optional

This pickup consists of a conical brass pin which is 4 cm long and as thick as a pencil. This pin is simply put into a conical hole drilled into the top end of the foot of the bridge. If you turn this brass pin in the bridge, you can adapt the sound to your instrument.

Besides the passive version, available for 15 years now, two improved active versions has recently been launched by Michael Schäfer, who took over the manufacturing from Willy Balsereit: the aktiv and the studio model. For these models, a miniature preamp (sized 4 x 6 mm) has been built into the brass cone. Existing older versions can be updated by the manufacturer.
The Bassbalsereit aktiv and studio models work with 7–48 V phantom power. While the aktiv can be used on balanced or unbalanced inputs, a balanced input (e.g. mixing console) is mandatory for the studio model. For the aktiv model, a DI box with phantom power supply is available, so it can easily be used with all kind of bassamps and mixing consoles.

www.bassbalsereit.de, www.ans-pickups.de

available at www.kontrabass-atelier.de

LiveBass H-Clamp (microphone holder)With H-clamps, practically any microphone can be mounted on double basses (or cello/guitars/…). Inspired by the design of the clamps used at the luthier’s workshop, they H-clamp is mounted to the ribs. The choice of the edge of the body as the fixing point for the H-clamp is important for several reasons. It is convenient from the perspective of positioning microphones unobtrusively, but more important, the edge is the strongest part of the structure and the point at which clamping has least effect on the resonances of the sound box’s panels. The H-clamp can therefore be tightened very securely and yet have no discernable impact on the sound of the instrument. The H-Clamp’s components are machined from aerospace grade materials by an experienced manufacturer of high performance components for aircraft and aeroengines.www.exploraudio.com, available at www.kontrabass-atelier.de

4099B

type: condenser microphone, hypercardoid
preamp: –  (phantom power needed)

The dpa 4099 series offers four models, each model specified for different instruments. The 4099B is designed for double bass/cello, and comes with a rubber clip which is mounted to the afterlengths.

VH4000 (microphone holder)

Besides a variety of microphones for many different instruments, dpa offers a microphone holder designed for double bass.

www.dpamicrophones.com

available at www.kontrabass-atelier.de

Twin SoundSpot
Type: piezoceramic
Mode: passive
Preamp: –

Double element PU. Similar to Fishman’s BP 100.

Bass SoundSpot
Type: piezoceramic
Mode: passive
Preamp: –

Single element PU. Attaches to bridge wing.

(Both d-tar pickups seem to be identical to K+K pickups)

http://www.d-tar.com

CP Professional
Type: contact microphone/PVDF (?)
Mode: active
Preamp: incl.

C-ducer is a capacitive transducer, offered for use with many instruments. Less than 1mm thick, the microphone is flexible, extremely light and will conform to curved surfaces such as a double bass body.
C-ducer contact tape microphones have a very high-impedance output, in order to make them usable a preamp is supplied with each microphone (battery or phantom powered).