Preamps and Processors:  Preamplifiers (1 Channel)

K&K Sound Pure Preamp

Manufactured by: K&K Sound

Pure Preamp
Designed as an all-purpose preamp for piezo and magnetic pickups, it can be used for many pre-amplification purposes. The specially designed EQ has a super-wide band midrange control centered at 1.5 kHz plus bass (100hz) and treble (10kHz) controls. This very clean circuit has gain, active (+/- 20dB) bass and treble controls, an internal gain trim pot for 1x to 10x preamplification. Just a tiny bit over 8 ounces with battery.

Steel case approx. 2 3/4 x 2 1/2 x 1 1/2 inches. Powered by a 9 volt battery (not included).

K&K Sound preamps are full-range, and suitable for use with any pickup. Due to their 1 megohm input impedance, they are ideal for piezo-based and magnetic pickups. Yup, I've been known to use my Pure Preamp with my old '71 Fender Precision fretless bass, for that "active" sound without making nasty new holes in that sweet old bass.

Do you need a preamp?
You may or may not, but it's good to know if there is a technical and/or practical reason for having one for your pickup. Click on the FAQ link below "Do You NEED a Preamp..." that discusses impedance matching and using piezo pickups with "normal" amplifiers.

All K&K Preamps have the same basic specifications:

• Frequency range 10 - 30,000 Hz
• Input Impedance: 1 Mega Ohm
• Output Impedance: 3 K Ohm
• Average Current: 3.5 mA

Dual Channel Pro Instrument Preamplifier

This powerful little box features two independent channels with separate gain and 3-band EQ controls. Two versions available; perfect for blending two piezo pickups, mics, or magnetic pickups...

K&K Sound Pure XLR Preamp

This 1-channel all-purpose preamp (magnetic/piezo) is an upgraded version of the Pure Preamp. It adds a phase switch and a balanced XLR output...

Ehrlund Acoustic PREAMPLIFIER (for EAP and other pickups)

This tiny, simple preamp is built by Ehrlund to accompany their EAP contact mic/pickup, but can be used with most any high-impedance pickup...

Fishman Full Circle Upright Bass Pickup

I really like the Full Circle- it delivers a much more natural sound with a nice mix of body and string. It has the warmth of the Realist but with more string detail, and even offers some tonal flexibity...

David Gage Realist Pickup for Double Bass (Original and Wood Version)

The David Gage Realist pickup is a very popular choice, used by a number of top bassists. Now available in wood as well as original copper versions. We also have the Cello and Viola/Violin version...

Fishman BP-100 Upright Bass Pickup

The BP100 is a legacy pickup that brought some clean and distinct string bass sounds to us back when dark and tubby bass ruled the world...

K&K Sound Pure Pickup for Tenor Guitar and Acoustic Bass Guitar

Specially designed for Acoustic Bass Guitar (ABG) and Tenor Guitar, this pickup is not as harsh as the more commonly used undersaddle pickups. 4 or 5 string versions available...

K&K Sound Pure Pickup Acoustic Guitar Pickup for Steel or Nylon String (Classical) Guitar

This specialized, easy to install transducer system does not sound as harsh and is less percussive than saddle transducers...

Hot Harmonica Musical Instrument Pickup

A piezo transducer is a good way to pick up a harmonica's sound in spite of the fact that it is a wind instrument.

K&K Violinissimo Musical Instrument Pickup

This three transducer system uses unique positioning to capture natural sound.

Fishman PRO-EQ II INSTRUMENT preamp

This long-running and well-regarded preamp from Fishman has served countless players well for many years. Now, in a newly upgraded and updated version...

NS Design (OEM) WAV4 Bass String Set

Original Equipment on the NS Design WAV4 basses, they're designed for the shorter string length of the WAV4 and CR4 basses...

Power Supply: K&K Preamp AC Adaptor for Compact Preamps

This power supply is specially designed to be used with the 9v-powered preamps from K&K Sound, like the Pure Preamp, Trinity Preamps, Dual Channel preamps, etc.